home *** CD-ROM | disk | FTP | other *** search
/ RISC User... in a Nutshell / RISC User... in a Nutshell.iso / mags / mac / 303.SIT / 3_03 Jan_Feb 1990 / Under the Lid (4) < prev    next >
Unknown  |  1989-12-21  |  37.3 KB

open in: MacOS 8.1     |     Win98     |     DOS

view JSON data     |     view as text

This file was not able to be converted.
This format is not currently supported by dexvert.

ConfidenceProgramDetectionMatch TypeSupport
100% file data default
100% TrID Adobe PhotoShop Brush default (weak)



hex view
+--------+-------------------------+-------------------------+--------+--------+
|00000000| 00 26 00 26 00 03 00 00 | 00 48 00 48 00 00 00 00 |.&.&....|.H.H....|
|00000010| 03 0d 02 1a ff e2 ff e4 | 03 2b 02 36 03 67 05 7b |........|.+.6.g.{|
|00000020| 03 de 00 02 00 00 00 48 | 00 48 00 00 00 00 03 0d |.......H|.H......|
|00000030| 02 1a 00 01 00 00 00 64 | 00 00 00 01 00 01 01 01 |.......d|........|
|00000040| 00 02 00 01 27 0f 00 01 | 00 01 00 3b e6 7a 00 00 |....'...|...;.z..|
|00000050| 00 00 00 00 00 00 00 02 | 00 19 01 90 00 00 00 00 |........|........|
|00000060| 00 40 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |.@......|........|
|00000070| 00 00 00 00 00 00 00 00 | 00 00 00 00 01 00 86 94 |........|........|
|00000080| 01 00 01 01 00 00 01 06 | 13 01 00 04 01 20 4a 00 |........|..... J.|
|00000090| 00 00 01 2c 00 00 00 00 | 00 f0 00 04 03 4c 63 c8 |...,....|.....Lc.|
|000000a0| 02 55 c6 8d 00 55 8a 14 | 00 39 31 63 00 4f de bd |.U...U..|.91c.O..|
|000000b0| 00 28 2f 5f 00 02 00 13 | d7 af 20 0e 00 d8 00 00 |.(/_....|.. .....|
|000000c0| 03 18 00 00 00 00 00 00 | 00 00 fd 80 33 33 03 49 |........|....33.I|
|000000d0| e3 c8 00 10 00 01 00 00 | 00 01 00 00 00 06 01 80 |........|........|
|000000e0| 09 40 00 00 01 0c 00 00 | 00 01 00 00 00 00 00 00 |.@......|........|
|000000f0| 00 00 00 00 00 00 00 b4 | 00 5b 00 c4 00 90 90 01 |........|.[......|
|00000100| 30 00 00 00 00 00 00 c9 | 00 5b 00 d9 00 90 90 01 |0.......|.[......|
|00000110| 30 00 00 00 00 00 00 e8 | 00 5b 00 f8 00 90 90 01 |0.......|.[......|
|00000120| 30 00 00 00 00 00 00 fd | 00 5b 01 0d 00 90 90 01 |0.......|.[......|
|00000130| 30 00 00 00 00 00 01 12 | 00 5b 01 22 00 90 90 01 |0.......|.[."....|
|00000140| 30 00 00 00 00 0a 00 03 | 00 0c 02 09 01 89 01 8c |0.......|........|
|00000150| 00 00 00 0c 00 00 00 00 | 00 60 00 c8 f0 67 55 55 |........|.`...gUU|
|00000160| 00 00 00 0c 00 00 00 00 | 00 50 00 c8 f0 66 55 55 |........|.P...fUU|
|00000170| 00 00 00 0c 00 00 00 00 | 00 50 00 c8 f0 65 55 55 |........|.P...eUU|
|00000180| 00 00 00 0c 00 00 00 00 | 00 50 00 c8 f0 64 55 55 |........|.P...dUU|
|00000190| 00 00 00 0c 00 00 00 00 | 00 50 00 c8 f0 63 55 55 |........|.P...cUU|
|000001a0| 00 00 03 9e 00 1b 00 00 | 00 00 00 0a 00 0f 00 2a |........|.......*|
|000001b0| 00 2f a0 02 e8 61 00 00 | 00 00 00 45 04 ac 00 5a |./...a..|...E...Z|
|000001c0| 04 f6 04 0a 49 6e 69 74 | 69 61 6c 69 7a 65 00 00 |....Init|ialize..|
|000001d0| 00 00 00 45 03 f7 00 5a | 04 41 04 05 45 6a 65 63 |...E...Z|.A..Ejec|
|000001e0| 74 00 00 00 00 00 00 45 | 04 52 00 5a 04 9c 04 02 |t......E|.R.Z....|
|000001f0| 4f 4b 00 00 00 00 00 1d | 04 26 00 2d 05 04 00 00 |OK......|.&.-....|
|00000200| 00 00 00 56 00 03 00 15 | 09 48 65 6c 76 65 74 69 |...V....|.Helveti|
|00000210| 63 61 09 48 65 6c 76 65 | 74 69 63 61 00 22 12 4e |ca.Helve|tica.".N|
|00000220| 65 77 20 43 65 6e 74 75 | 72 79 20 53 63 68 6c 62 |ew Centu|ry Schlb|
|00000230| 6b 16 4e 65 77 43 65 6e | 74 75 72 79 53 63 68 6c |k.NewCen|turySchl|
|00000240| 62 6b 2d 52 6f 6d 61 6e | 00 16 07 43 6f 75 72 69 |bk-Roman|...Couri|
|00000250| 65 72 07 43 6f 75 72 69 | 65 72 00 00 02 12 02 09 |er.Couri|er......|
|00000260| 00 00 01 ff 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000270| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000280| 01 2d 00 00 00 00 00 00 | 00 00 00 00 00 00 ff ff |.-......|........|
|00000290| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 ff ff |........|........|
|000002a0| 00 00 01 01 00 00 01 00 | 00 00 00 00 00 00 ff ff |........|........|
|000002b0| 05 42 6c 61 63 6b 04 2d | 00 00 00 00 ff ff ff ff |.Black.-|........|
|000002c0| ff ff 00 00 00 00 00 00 | 00 00 00 00 00 00 aa aa |........|........|
|000002d0| ff ff ff ff ff ff 00 00 | 02 01 00 00 00 00 ff ff |........|........|
|000002e0| ff ff 00 00 00 00 04 42 | 6c 75 65 04 05 2d 00 00 |.......B|lue..-..|
|000002f0| ff ff ff ff ff ff 00 00 | 00 00 00 00 00 00 ff fc |........|........|
|00000300| 00 02 00 00 00 00 00 00 | 7f ff ff ff ff ff ff ff |........|........|
|00000310| 00 00 04 01 00 00 01 00 | ff ff 00 00 00 00 00 00 |........|........|
|00000320| 04 43 79 61 6e 73 03 2d | 00 00 ff ff 00 00 ff ff |.Cyans.-|........|
|00000330| 00 00 ff ff 00 00 00 00 | 00 00 00 00 00 00 55 55 |........|......UU|
|00000340| ff ff ff ff ff ff 00 00 | 05 01 00 00 00 00 ff ff |........|........|
|00000350| 00 00 ff ff 00 00 05 47 | 72 65 65 6e 06 2d ff ff |.......G|reen.-..|
|00000360| 00 00 ff ff 00 00 ff ff | 00 00 00 00 00 00 00 00 |........|........|
|00000370| 00 00 00 00 d5 54 ff ff | ff ff ff ff 00 00 06 01 |.....T..|........|
|00000380| 00 00 01 00 00 00 ff ff | 00 00 00 00 07 4d 61 67 |........|.....Mag|
|00000390| 65 6e 74 61 02 2d ff ff | 00 00 00 00 00 00 ff ff |enta.-..|........|
|000003a0| ff ff 00 00 00 00 00 00 | 00 00 00 00 00 00 ff ff |........|........|
|000003b0| ff ff ff ff 00 00 07 01 | 00 00 00 00 00 00 ff ff |........|........|
|000003c0| ff ff 00 00 03 52 65 64 | 08 2d 00 00 00 00 00 00 |.....Red|.-......|
|000003d0| 00 00 00 00 00 00 ff ff | 00 00 00 00 00 00 00 00 |........|........|
|000003e0| 00 00 00 00 00 00 ff ff | 00 00 08 01 00 01 00 01 |........|........|
|000003f0| 00 00 00 00 00 00 ff ff | 0c 52 65 67 69 73 74 72 |........|.Registr|
|00000400| 61 74 69 6f 6e 00 00 2d | ff ff ff ff ff ff 00 00 |ation..-|........|
|00000410| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000420| 00 00 ff ff ff ff 00 00 | 09 01 00 00 01 00 00 00 |........|........|
|00000430| 00 00 00 00 00 00 05 57 | 68 69 74 65 07 2d ff ff |.......W|hite.-..|
|00000440| ff ff 00 00 00 00 00 00 | ff ff 00 00 00 00 00 00 |........|........|
|00000450| 00 00 00 00 2a aa ff ff | ff ff ff ff 00 00 0a 01 |....*...|........|
|00000460| 00 00 01 00 00 00 00 00 | ff ff 00 00 06 59 65 6c |........|.....Yel|
|00000470| 6c 6f 77 65 00 00 08 a2 | 00 15 00 30 00 00 08 00 |lowe....|...0....|
|00000480| 01 64 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |.d......|........|
|00000490| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000004a0| 00 00 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000004b0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000004c0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000004d0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000004e0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000004f0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff fa |. ..... |..... ..|
|00000500| 00 02 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |....... |..... ..|
|00000510| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 00 |... ....|. ......|
|00000520| 00 00 00 00 00 00 30 00 | 06 4e 6f 72 6d 61 6c 14 |......0.|.Normal.|
|00000530| 00 22 00 2e 00 00 08 00 | 01 64 00 00 00 00 03 03 |."......|.d......|
|00000540| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000550| 00 00 00 00 00 00 00 00 | 00 00 00 20 00 12 00 00 |........|... ....|
|00000560| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000570| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000580| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000590| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000005a0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000005b0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000005c0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000005d0| ff ff 53 31 02 00 00 00 | 00 00 00 00 04 54 65 78 |..S1....|.....Tex|
|000005e0| 74 63 00 22 00 38 00 01 | 08 00 01 64 00 00 00 00 |tc.".8..|...d....|
|000005f0| 03 03 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000600| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 20 00 12 |........|..... ..|
|00000610| 00 00 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000620| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000630| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000640| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000650| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000660| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000670| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000680| ff ff ff ff 56 34 02 00 | 00 00 00 00 00 00 08 53 |....V4..|.......S|
|00000690| 75 62 74 69 74 6c 65 00 | 00 15 00 90 00 03 08 00 |ubtitle.|........|
|000006a0| 04 64 00 00 00 00 03 00 | 00 00 00 00 00 00 00 00 |.d......|........|
|000006b0| 00 00 00 00 00 00 00 00 | 00 01 00 00 00 00 00 00 |........|........|
|000006c0| 00 00 00 20 00 12 00 00 | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000006d0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000006e0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000006f0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff ff f7 |... ....|. ......|
|00000700| 00 00 00 22 00 00 00 04 | 00 6b 00 22 00 00 00 06 |..."....|.k."....|
|00000710| 00 01 00 00 00 22 00 00 | 00 06 00 01 00 00 00 22 |....."..|......."|
|00000720| 00 00 00 00 8a 14 de bd | b2 65 17 2e 00 00 00 20 |........|.e..... |
|00000730| 00 00 00 00 00 00 00 00 | 00 2c ac e4 00 01 00 00 |........|.,......|
|00000740| 80 00 64 01 80 02 00 13 | d7 af 00 01 00 00 00 00 |..d.....|........|
|00000750| 00 00 00 00 00 00 ff 40 | 00 00 00 00 00 00 00 00 |.......@|........|
|00000760| 00 00 00 00 00 00 02 00 | 00 00 00 00 02 ff 00 00 |........|........|
|00000770| 04 00 00 00 00 00 01 fd | 00 00 00 00 00 00 55 00 |........|......U.|
|00000780| 4f 03 13 02 2e 8a 14 de | bd b2 65 17 2e 00 00 00 |O.......|..e.....|
|00000790| 00 00 00 00 00 00 00 00 | 00 00 2c ad 50 00 01 00 |........|..,.P...|
|000007a0| 00 80 00 64 01 80 02 00 | 13 d7 af 00 01 00 00 00 |...d....|........|
|000007b0| 00 00 00 00 00 00 00 ff | 00 00 00 00 00 00 00 00 |........|........|
|000007c0| 00 00 00 00 00 00 00 02 | 00 00 00 00 00 01 ff 00 |........|........|
|000007d0| 00 04 00 00 00 00 00 01 | 03 00 00 00 80 00 03 1f |........|........|
|000007e0| 00 28 03 35 02 2e de bd | 2f 5f b6 6c 17 2f 00 00 |.(.5....|/_.l./..|
|000007f0| 00 20 00 30 f6 3c 00 00 | 00 00 00 2c ae 64 00 00 |. .0.<..|...,.d..|
|00000800| 00 02 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000810| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000820| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000830| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 55 33 |... ....|. ....U3|
|00000840| 02 00 00 00 00 00 00 00 | 05 54 69 74 6c 65 00 15 |........|.Title..|
|00000850| 00 40 00 03 08 00 04 64 | 00 00 00 00 03 00 00 00 |.@.....d|........|
|00000860| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 01 |........|........|
|00000870| 00 00 00 00 00 00 00 00 | 00 20 00 12 00 00 00 20 |........|. ..... |
|00000880| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000890| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000008a0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000008b0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000008c0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000008d0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000008e0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000008f0| 00 00 00 00 00 00 00 00 | 00 00 12 54 69 74 6c 65 |........|...Title|
|00000900| 2d 63 6f 6e 74 69 6e 75 | 61 74 69 6f 6e f0 00 15 |-continu|ation...|
|00000910| 00 30 00 03 08 cd 04 64 | 00 00 00 00 03 00 00 00 |.0.....d|........|
|00000920| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000930| 00 00 00 00 00 00 00 00 | 00 20 00 12 00 00 00 20 |........|. ..... |
|00000940| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000950| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000960| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000970| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000980| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000990| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000009a0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000009b0| 54 32 02 00 00 00 00 00 | 00 00 0c 49 6e 74 72 6f |T2......|...Intro|
|000009c0| 64 75 63 74 69 6f 6e 0c | 00 22 00 90 00 00 08 00 |duction.|."......|
|000009d0| 04 64 00 00 00 00 03 00 | 00 00 00 00 00 00 00 00 |.d......|........|
|000009e0| 00 00 00 00 00 00 00 00 | 00 01 00 00 00 00 00 00 |........|........|
|000009f0| 00 00 00 20 00 12 00 00 | 00 20 ff ff ff ff 00 0c |... ....|. ......|
|00000a00| 00 00 00 23 00 00 00 04 | 00 1a 00 23 00 00 00 06 |...#....|...#....|
|00000a10| 00 01 00 00 00 23 00 00 | 00 06 00 01 00 00 00 23 |.....#..|.......#|
|00000a20| 00 00 00 00 00 00 55 00 | 4f 03 13 02 2e 8a 14 de |......U.|O.......|
|00000a30| bd b2 65 17 2e 00 00 00 | 00 00 00 00 00 00 00 00 |..e.....|........|
|00000a40| 00 00 2c ad 50 00 01 00 | 00 80 00 64 01 80 02 00 |..,.P...|...d....|
|00000a50| 13 d7 af 00 01 00 00 00 | 00 00 00 00 00 00 00 ff |........|........|
|00000a60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 02 |........|........|
|00000a70| 00 00 00 00 00 01 ff 00 | 00 04 00 00 00 00 00 01 |........|........|
|00000a80| 03 00 00 08 80 00 03 1f | 00 28 03 35 02 2f de bd |........|.(.5./..|
|00000a90| 2f 5f b6 6c 82 04 00 00 | 00 20 00 30 f6 3c 00 00 |/_.l....|. .0.<..|
|00000aa0| 00 00 00 2c ae 64 00 01 | 00 00 80 00 64 01 80 01 |...,.d..|....d...|
|00000ab0| 00 13 d7 af 00 01 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000ac0| ff 00 00 00 00 01 01 00 | 00 80 00 03 16 00 22 03 |........|......".|
|00000ad0| 19 02 33 dd bb 84 08 dd | bb c2 85 00 30 f2 44 00 |..3.....|....0.D.|
|00000ae0| 30 f5 f4 00 00 00 00 00 | 2c ad a0 64 04 03 18 00 |0.......|,..d....|
|00000af0| 23 03 18 02 32 5d bb 84 | 08 5d bb c2 85 00 00 00 |#...2]..|.]......|
|00000b00| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000b10| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000b20| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000b30| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000b40| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000b50| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000b60| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 00 00 00 |. ..... |........|
|00000b70| 00 00 00 00 00 00 0f 53 | 74 61 72 74 69 6e 67 20 |.......S|tarting |
|00000b80| 4c 65 74 74 65 72 00 16 | 00 30 00 00 06 66 01 64 |Letter..|.0...f.d|
|00000b90| 00 00 00 00 03 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000ba0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000bb0| 00 20 00 12 00 00 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000bc0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000bd0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000be0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000bf0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff ff f0 |... ....|. ......|
|00000c00| 00 00 00 18 00 00 00 04 | 00 0e 00 18 00 00 00 06 |........|........|
|00000c10| 00 05 00 00 00 18 00 00 | 00 0c 00 05 00 00 00 18 |........|........|
|00000c20| 00 05 00 00 00 00 00 00 | 00 00 20 74 68 65 20 21 |........|.. the !|
|00000c30| 44 69 61 72 79 20 64 69 | 72 65 63 74 6f 72 79 20 |Diary di|rectory |
|00000c40| 77 69 74 68 29 a1 00 c0 | 00 09 78 70 72 73 74 64 |with)...|..xprstd|
|00000c50| 72 61 77 a1 00 c0 00 01 | 0d a1 00 c0 00 05 35 32 |raw.....|......52|
|00000c60| 2e 35 36 a1 00 c0 00 01 | 20 a1 00 c0 00 06 35 39 |.56.....| .....59|
|00000c70| 32 2e 38 38 a1 00 c0 00 | 01 20 a1 00 c0 00 07 6d |2.88....|. .....m|
|00000c80| 6f 76 65 74 6f 20 a1 00 | c0 00 03 30 2e 38 a1 00 |oveto ..|...0.8..|
|00000c90| c0 00 01 20 a1 00 c0 00 | 01 30 a1 00 c0 00 01 20 |... ....|.0..... |
|00000ca0| a1 00 c0 00 06 32 32 32 | 2e 31 39 a1 00 c0 00 01 |.....222|.19.....|
|00000cb0| 20 a1 00 c0 00 28 28 74 | 68 65 20 6e 61 6d 65 20 | ....((t|he name |
|00000cc0| 21 52 75 6e 49 6d 61 67 | 65 2e 20 49 20 73 75 67 |!RunImag|e. I sug|
|00000cd0| 67 65 73 74 20 79 6f 75 | 20 61 6c 73 6f 29 a1 00 |gest you| also)..|
|00000ce0| c0 00 09 78 70 72 73 74 | 64 72 61 77 a1 00 c0 00 |...xprst|draw....|
|00000cf0| 01 0d a1 00 c0 00 05 35 | 32 2e 35 36 a1 00 00 00 |.......5|2.56....|
|00000d00| 52 49 53 43 20 55 73 65 | 72 20 44 65 73 6b 74 6f |RISC Use|r Deskto|
|00000d10| 70 20 44 69 61 72 79 0d | 00 12 00 00 00 20 ff ff |p Diary.|..... ..|
|00000d20| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000d30| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000d40| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000d50| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000d60| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000d70| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000d80| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 53 31 |... ....|. ....S1|
|00000d90| 02 00 00 00 00 00 00 00 | 04 54 65 78 74 63 00 00 |........|.Textc..|
|00000da0| 00 00 00 78 00 00 00 00 | 00 00 00 00 00 00 00 00 |...x....|........|
|00000db0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000dc0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000dd0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000de0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000df0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000e00| 00 00 00 1c 00 00 00 04 | 00 49 00 1c 00 00 00 12 |........|.I......|
|00000e10| 00 07 00 00 00 15 00 0e | 00 00 00 06 00 07 00 00 |........|........|
|00000e20| 00 01 00 00 00 0c 00 02 | 00 00 00 1c 00 02 00 00 |........|........|
|00000e30| 00 00 00 00 00 00 20 a1 | 00 c0 00 06 36 33 36 2e |...... .|....636.|
|00000e40| 30 38 a1 00 c0 00 01 20 | a1 00 c0 00 07 6d 6f 76 |08..... |.....mov|
|00000e50| 65 74 6f 20 a1 00 c0 00 | 04 31 2e 30 37 a1 00 c0 |eto ....|.1.07...|
|00000e60| 00 01 20 a1 00 c0 00 01 | 31 a1 00 c0 00 01 20 a1 |.. .....|1..... .|
|00000e70| 00 c0 00 06 31 39 30 2e | 36 36 a1 00 c0 00 01 20 |....190.|66..... |
|00000e80| a1 00 c0 00 22 28 63 61 | 6e 20 62 65 20 61 70 70 |...."(ca|n be app|
|00000e90| 65 6e 64 65 64 20 6e 65 | 78 74 20 6d 6f 6e 74 68 |ended ne|xt month|
|00000ea0| 2e 20 54 68 69 73 29 a1 | 00 c0 00 09 78 70 72 73 |. This).|....xprs|
|00000eb0| 74 64 72 61 77 a1 00 c0 | 00 01 0d a1 00 c0 00 05 |tdraw...|........|
|00000ec0| 35 32 2e 35 36 a1 00 c0 | 00 01 20 a1 00 c0 00 06 |52.56...|.. .....|
|00000ed0| 36 35 30 2e 34 38 a1 00 | c0 00 01 20 a1 00 c0 00 |650.48..|... ....|
|00000ee0| 07 6d 6f 76 65 74 6f 20 | a1 00 c0 00 04 34 2e 35 |.moveto |.....4.5|
|00000ef0| 39 a1 00 c0 00 01 20 a1 | 00 c0 00 01 31 a1 00 00 |9..... .|....1...|
|00000f00| 00 04 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000f10| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000f20| 00 20 ff ff ff ff 00 20 | ff ff ff ff 58 36 02 00 |. ..... |....X6..|
|00000f30| 00 00 00 00 00 00 08 4c | 69 73 74 69 6e 67 73 00 |.......L|istings.|
|00000f40| 00 15 00 24 00 03 08 00 | 04 64 00 00 00 00 00 00 |...$....|.d......|
|00000f50| 00 00 00 08 81 02 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000f60| 00 00 00 00 00 00 00 00 | 00 00 00 20 00 40 00 00 |........|... .@..|
|00000f70| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000f80| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000f90| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000fa0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000fb0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00000fc0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00000fd0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00000fe0| ff ff 59 37 02 00 00 00 | 00 00 00 00 0f 50 72 6f |..Y7....|.....Pro|
|00000ff0| 64 75 63 74 20 64 65 74 | 61 69 6c 73 00 15 00 24 |duct det|ails...$|
|00001000| 00 03 08 00 04 64 00 00 | 00 00 00 02 00 00 00 00 |.....d..|........|
|00001010| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001020| 00 00 00 00 00 00 00 20 | ff ff ff ff 00 20 ff ff |....... |..... ..|
|00001030| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001040| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001050| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001060| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001070| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001080| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001090| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 00 |... ....|. ......|
|000010a0| 00 00 00 00 00 00 00 00 | 11 43 6f 6e 74 69 6e 75 |........|.Continu|
|000010b0| 65 64 20 6f 6e 20 70 61 | 67 65 00 15 00 24 00 03 |ed on pa|ge...$..|
|000010c0| 08 cd 04 64 00 00 00 00 | 00 01 00 00 00 00 00 00 |...d....|........|
|000010d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000010e0| 00 00 00 00 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000010f0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001100| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001110| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001120| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001130| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001140| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001150| 00 20 ff ff ff ff 00 20 | ff ff ff ff 57 35 02 00 |. ..... |....W5..|
|00001160| 00 00 00 00 00 00 07 43 | 61 70 74 69 6f 6e 00 15 |.......C|aption..|
|00001170| 00 2c 00 03 08 cd 01 64 | 00 00 00 00 03 00 00 00 |.,.....d|........|
|00001180| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001190| 00 00 00 00 00 00 00 00 | 02 20 02 00 00 00 00 20 |........|. ..... |
|000011a0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000011b0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000011c0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000011d0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000011e0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000011f0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001200| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001210| 00 00 00 00 00 00 00 00 | 00 00 0d 4c 69 73 74 69 |........|...Listi|
|00001220| 6e 67 20 54 69 74 6c 65 | 00 00 00 3a 60 01 00 01 |ng Title|...:`...|
|00001230| 06 03 02 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001240| 00 00 00 00 00 00 80 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001250| 00 00 26 66 00 00 00 00 | 00 00 00 00 08 53 74 61 |..&f....|.....Sta|
|00001260| 6e 64 61 72 64 00 00 00 | 02 40 00 09 00 15 00 30 |ndard...|.@.....0|
|00001270| 00 00 08 00 01 64 00 00 | 00 00 00 05 00 15 00 38 |.....d..|.......8|
|00001280| 00 02 08 00 01 64 00 00 | 00 00 00 01 00 15 00 30 |.....d..|.......0|
|00001290| 00 03 08 cd 04 64 00 00 | 00 00 00 01 00 22 00 80 |.....d..|....."..|
|000012a0| 00 00 08 00 04 64 00 00 | 00 00 00 02 00 15 00 30 |.....d..|.......0|
|000012b0| 00 1b 08 00 04 64 00 00 | 00 00 00 02 00 22 00 40 |.....d..|.....".@|
|000012c0| 00 03 08 00 04 64 00 00 | 00 00 00 0d 00 22 00 2e |.....d..|....."..|
|000012d0| 00 00 08 00 01 64 00 00 | 00 00 00 02 00 15 00 90 |.....d..|........|
|000012e0| 00 03 08 00 04 64 00 00 | 00 00 00 05 00 22 00 38 |.....d..|.....".8|
|000012f0| 00 01 08 00 01 64 00 00 | 00 00 00 02 00 15 ff ec |.....d..|........|
|00001300| 00 02 00 40 00 03 08 00 | 04 64 00 00 00 00 00 01 |...@....|.d......|
|00001310| 00 22 00 2e 00 02 08 00 | 01 64 00 03 00 00 00 04 |."......|.d......|
|00001320| 00 22 00 2e 00 02 08 00 | 01 64 00 00 00 00 00 01 |."......|.d......|
|00001330| 00 22 00 1c 00 00 08 00 | 01 64 00 00 00 00 00 07 |."......|.d......|
|00001340| 00 22 00 2e 00 00 08 00 | 01 64 00 05 00 00 00 01 |."......|.d......|
|00001350| 00 15 00 60 00 03 08 00 | 04 64 00 00 00 00 00 01 |...`....|.d......|
|00001360| 00 15 00 28 00 00 08 00 | 01 64 00 00 00 00 00 02 |...(....|.d......|
|00001370| 00 15 00 28 00 01 08 00 | 01 64 00 00 00 00 00 02 |...(....|.d......|
|00001380| 00 15 00 24 00 00 08 00 | 01 64 00 00 00 00 00 02 |...$....|.d......|
|00001390| 00 15 00 28 00 03 08 cd | 04 64 00 00 00 00 00 01 |...(....|.d......|
|000013a0| 00 15 00 10 00 00 08 00 | 01 64 00 00 00 00 00 09 |........|.d......|
|000013b0| 00 15 00 24 00 01 08 00 | 01 64 00 00 00 00 00 02 |...$....|.d......|
|000013c0| 00 15 00 10 00 01 08 00 | 01 64 00 00 00 00 00 02 |........|.d......|
|000013d0| 00 15 00 24 00 01 08 00 | 01 64 00 fe 00 00 00 01 |...$....|.d......|
|000013e0| 00 22 00 30 00 00 08 00 | 01 64 00 00 00 00 00 01 |.".0....|.d......|
|000013f0| 00 22 00 2e 00 00 08 00 | 01 64 00 01 00 00 00 05 |."......|.d......|
|00001400| 00 22 00 2e 00 00 08 00 | 01 64 00 ff 00 00 00 04 |."......|.d......|
|00001410| 00 22 00 2e 00 02 08 00 | 01 64 00 ff 00 00 00 02 |."......|.d......|
|00001420| 00 22 00 2e 00 00 08 00 | 01 64 00 0a 00 00 00 01 |."......|.d......|
|00001430| 00 22 00 2e 00 00 08 00 | 01 64 00 08 00 00 00 01 |."......|.d......|
|00001440| 00 22 00 10 00 00 08 00 | 01 64 00 00 00 00 00 02 |."......|.d......|
|00001450| 00 22 00 24 00 00 08 00 | 01 64 00 00 00 00 00 01 |.".$....|.d......|
|00001460| 00 15 00 24 00 03 08 00 | 04 64 00 00 00 00 00 01 |...$....|.d......|
|00001470| 00 22 00 34 00 00 08 00 | 01 64 00 00 00 00 00 02 |.".4....|.d......|
|00001480| 00 22 00 2e 00 00 08 00 | 01 64 00 02 00 00 00 01 |."......|.d......|
|00001490| 00 22 00 2e 00 02 08 00 | 01 64 00 02 00 00 00 04 |."......|.d......|
|000014a0| 00 22 00 2e 00 00 08 00 | 01 64 00 03 00 00 00 00 |."......|.d......|
|000014b0| 0b 22 00 08 00 00 00 01 | 00 00 00 00 00 00 00 00 |."......|........|
|000014c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000014d0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000014e0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000014f0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff e9 |..... ..|... ....|
|00001500| 00 00 00 01 00 00 00 04 | 00 4f 00 01 00 00 00 06 |........|.O......|
|00001510| 00 03 00 00 00 01 00 00 | 00 06 00 06 00 00 00 01 |........|........|
|00001520| 00 00 00 00 00 1e 01 00 | 00 20 01 00 00 28 00 c2 |........|. ...(..|
|00001530| 00 00 00 12 00 03 00 00 | 01 9e 00 06 00 00 00 09 |........|........|
|00001540| 00 03 00 00 07 4e 00 00 | 00 42 00 04 00 00 01 9d |.....N..|.B......|
|00001550| 00 08 00 00 00 01 00 07 | 00 00 00 09 00 04 00 00 |........|........|
|00001560| 00 b2 00 04 00 00 01 54 | 00 04 00 00 00 23 00 04 |.......T|.....#..|
|00001570| 00 00 01 9d 00 03 00 00 | 01 d5 00 04 00 00 00 01 |........|........|
|00001580| 00 04 00 00 00 fa 00 04 | 00 00 00 b8 00 00 00 00 |........|........|
|00001590| 01 d5 00 04 00 00 00 01 | 00 04 00 00 00 fa 00 04 |........|........|
|000015a0| 00 00 01 53 00 04 00 00 | 00 01 00 04 00 00 00 01 |...S....|........|
|000015b0| 00 04 00 00 00 50 00 04 | 00 00 00 01 00 04 00 00 |.....P..|........|
|000015c0| 01 9c 00 00 00 00 00 01 | 00 04 00 00 01 9c 00 00 |........|........|
|000015d0| 00 00 c0 00 04 31 2e 35 | 38 a1 00 c0 00 01 20 a1 |.....1.5|8..... .|
|000015e0| 00 c0 00 01 30 a1 00 c0 | 00 01 20 a1 00 c0 00 06 |....0...|.. .....|
|000015f0| 31 32 35 2e 35 34 a1 00 | c0 00 01 20 a1 00 00 00 |125.54..|... ....|
|00001600| 00 03 ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001610| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001620| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001630| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001640| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 05 03 00 |. ..... |........|
|00001650| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001660| 00 00 00 00 00 00 00 00 | 00 00 02 20 02 00 00 00 |........|... ....|
|00001670| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001680| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001690| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000016a0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000016b0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000016c0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000016d0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000016e0| ff ff 00 02 03 00 00 04 | 00 00 00 00 00 00 00 00 |........|........|
|000016f0| 00 00 00 00 00 00 00 01 | 00 00 00 00 00 00 00 00 |........|........|
|00001700| 00 20 00 12 00 00 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001710| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001720| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001730| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001740| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001750| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001760| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001770| ff ff 00 20 ff ff ff ff | 00 02 00 02 00 01 00 00 |... ....|........|
|00001780| 00 00 00 00 00 00 00 00 | 00 00 ff ff 00 01 00 00 |........|........|
|00001790| 00 00 00 00 00 00 00 20 | ff ff ff ff 00 20 ff ff |....... |..... ..|
|000017a0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000017b0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000017c0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000017d0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000017e0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000017f0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001800| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 01 |... ....|. ......|
|00001810| 03 03 00 02 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001820| 00 02 4c cd 00 00 00 00 | 00 00 00 00 00 20 00 12 |..L.....|..... ..|
|00001830| 00 00 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001840| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001850| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001860| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001870| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001880| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001890| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000018a0| ff ff ff ff 00 05 03 00 | 00 02 00 00 00 00 00 00 |........|........|
|000018b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000018c0| 00 00 00 20 00 12 00 00 | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000018d0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000018e0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000018f0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 1b |... ....|. ......|
|00001900| 52 49 53 43 20 55 73 65 | 72 20 4a 61 6e 75 61 72 |RISC Use|r Januar|
|00001910| 79 2f 46 65 62 72 75 61 | 72 79 20 31 39 39 30 09 |y/Februa|ry 1990.|
|00001920| 31 32 09 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |12......|........|
|00001930| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001940| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001950| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001960| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001970| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001980| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001990| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000019a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000019b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000019c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000019d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000019e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000019f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001a00| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001a10| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001a20| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001a30| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 01 03 00 |. ..... |........|
|00001a40| 00 02 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001a50| 00 01 00 00 00 00 00 00 | 00 00 00 20 00 12 00 00 |........|... ....|
|00001a60| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001a70| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001a80| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001a90| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001aa0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001ab0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001ac0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001ad0| ff ff 00 02 03 00 00 06 | 00 00 00 00 00 00 00 00 |........|........|
|00001ae0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001af0| 00 20 00 12 00 00 00 20 | ff ff ff ff 00 20 00 20 |. ..... |..... . |
|00001b00| 00 00 00 3e 00 00 00 04 | 00 1e 00 3e 00 00 00 06 |...>....|...>....|
|00001b10| 00 02 00 00 00 3e 00 00 | 00 0c 00 07 00 00 00 3e |.....>..|.......>|
|00001b20| 00 07 00 00 00 00 00 00 | 00 00 ff ff ff ff 00 20 |........|....... |
|00001b30| ff ff ff ff 00 00 00 00 | 00 01 ff 00 00 04 00 00 |........|........|
|00001b40| 00 00 00 01 03 00 00 0b | 80 00 03 1f 00 28 03 35 |........|.....(.5|
|00001b50| 02 2e de bd 2f 5f b6 6c | 17 2e 00 00 00 20 00 2e |..../_.l|..... ..|
|00001b60| f4 d0 00 00 00 00 00 2a | d0 88 00 01 00 00 80 00 |.......*|........|
|00001b70| 64 01 80 01 00 13 d7 af | 00 01 00 00 00 00 00 00 |d.......|........|
|00001b80| 00 00 00 00 ff 00 00 00 | 00 01 01 00 00 00 00 03 |........|........|
|00001b90| 16 00 22 03 19 02 36 dd | bb 84 08 dd bb 98 30 00 |.."...6.|......0.|
|00001ba0| 2a 00 fc 00 2e f5 1c 00 | 00 00 00 00 00 00 00 64 |*.......|.......d|
|00001bb0| 04 03 18 00 23 03 18 02 | 35 5d bb 84 08 5d bb 98 |....#...|5]...]..|
|00001bc0| 30 00 01 80 00 00 00 00 | 00 00 00 01 01 00 00 80 |0.......|........|
|00001bd0| 00 00 38 00 22 00 3b 02 | 36 b1 63 84 08 b1 63 98 |..8.".;.|6.c...c.|
|00001be0| 30 00 2a 00 fc 00 2e f5 | 64 00 00 00 00 00 2a cd |0.*.....|d.....*.|
|00001bf0| 90 64 04 00 3a 00 23 00 | 3a 02 35 31 63 84 00 00 |.d..:.#.|:.51c...|
|00001c00| 00 00 00 02 00 00 00 04 | 00 2d 00 02 00 00 00 06 |........|.-......|
|00001c10| 00 04 00 00 00 02 00 00 | 00 06 00 03 00 00 00 02 |........|........|
|00001c20| 00 00 00 00 6e 64 20 44 | 65 6c 65 74 65 20 77 6f |....nd D|elete wo|
|00001c30| 72 6b 73 20 61 73 20 65 | 78 0d 68 69 73 20 61 72 |rks as e|x.his ar|
|00001c40| 74 69 63 6c 65 2c 20 77 | 69 74 68 20 70 61 72 74 |ticle, w|ith part|
|00001c50| 20 74 77 6f 20 74 6f 20 | 66 6f 6c 6c 6f 77 20 6e | two to |follow n|
|00001c60| 65 78 74 20 6d 6f 6e 74 | 68 2c 20 64 65 73 63 72 |ext mont|h, descr|
|00001c70| 69 62 65 73 20 61 20 75 | 73 65 66 75 6c 20 64 69 |ibes a u|seful di|
|00001c80| 61 72 79 20 66 61 63 69 | 6c 69 74 79 20 74 6f 20 |ary faci|lity to |
|00001c90| 61 64 64 20 74 6f 20 79 | 6f 75 72 20 52 49 53 43 |add to y|our RISC|
|00001ca0| 20 4f 53 20 44 65 73 6b | 74 6f 70 2e 20 54 68 65 | OS Desk|top. The|
|00001cb0| 20 70 72 6f 67 72 61 6d | 20 72 75 6e 73 20 66 72 | program| runs fr|
|00001cc0| 6f 6d 20 61 6e 20 61 70 | 70 6c 69 63 61 74 69 6f |om an ap|plicatio|
|00001cd0| 6e 20 64 69 72 65 63 74 | 6f 72 79 2c 20 61 6e 64 |n direct|ory, and|
|00001ce0| 20 75 73 65 73 20 61 6c | 6c 20 74 68 65 20 73 74 | uses al|l the st|
|00001cf0| 61 6e 64 61 72 64 20 44 | 65 73 6b 74 6f 70 00 00 |andard D|esktop..|
|00001d00| 44 61 76 69 64 20 53 70 | 65 6e 63 65 72 20 63 6f |David Sp|encer co|
|00001d10| 6e 63 6c 75 64 65 73 20 | 68 69 73 20 6c 6f 6f 6b |ncludes |his look|
|00001d20| 20 61 74 20 74 68 65 20 | 41 72 63 68 69 6d 65 64 | at the |Archimed|
|00001d30| 65 73 d5 20 68 61 72 64 | 77 61 72 65 2e 0d 00 00 |es. hard|ware....|
|00001d40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001d50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001d60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001d70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001d80| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001d90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001da0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001db0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001dc0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001dd0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001de0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 02 30 |........|.......0|
|00001df0| 00 00 00 00 00 00 00 00 | 00 00 00 10 00 00 f7 84 |........|........|
|00001e00| 00 00 26 53 00 00 00 a0 | 00 2b 00 a8 00 21 01 00 |..&S....|.+...!..|
|00001e10| 00 22 01 00 00 23 01 00 | 00 24 01 00 00 60 00 ff |."...#..|.$...`..|
|00001e20| 00 26 01 00 00 27 01 00 | 00 28 01 00 00 29 01 00 |.&...'..|.(...)..|
|00001e30| 00 2a 01 00 00 61 01 00 | 00 2e 01 00 00 2f 01 00 |.*...a..|...../..|
|00001e40| 00 30 01 00 00 31 01 00 | 00 4d 01 00 00 50 01 00 |.0...1..|.M...P..|
|00001e50| 00 56 00 02 00 34 01 00 | 00 35 01 00 00 36 01 00 |.V...4..|.5...6..|
|00001e60| 00 37 01 00 00 38 01 00 | 00 39 01 00 00 3a 01 00 |.7...8..|.9...:..|
|00001e70| 00 3c 01 00 00 3d 01 00 | 00 3e 01 00 00 3f 01 00 |.<...=..|.>...?..|
|00001e80| 00 40 01 00 00 41 01 00 | 00 42 01 00 00 43 01 00 |.@...A..|.B...C..|
|00001e90| 00 4a 01 00 00 45 01 00 | 00 46 01 00 00 47 01 00 |.J...E..|.F...G..|
|00001ea0| 00 48 01 00 00 5e 00 aa | 00 00 01 50 00 0d 00 00 |.H...^..|...P....|
|00001eb0| 00 ec 00 17 00 00 00 01 | 00 08 00 00 00 12 00 18 |........|........|
|00001ec0| 00 00 04 8c 00 06 00 00 | 02 09 00 19 00 00 02 48 |........|.......H|
|00001ed0| 00 1a 00 00 00 04 00 19 | 00 00 00 02 00 1a 00 00 |........|........|
|00001ee0| 00 06 00 19 00 00 00 05 | 00 1a 00 00 00 04 00 19 |........|........|
|00001ef0| 00 00 00 7a 00 1a 00 00 | 00 04 00 19 00 00 00 4b |...z....|.......K|
|00001f00| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001f10| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001f20| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001f30| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001f40| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001f50| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001f60| ff ff ff ff 00 20 ff ff | ff ff 00 03 00 02 00 01 |..... ..|........|
|00001f70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00001f80| 00 00 00 00 00 00 00 00 | 00 20 ff ff ff ff 00 20 |........|. ..... |
|00001f90| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001fa0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001fb0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001fc0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00001fd0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00001fe0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00001ff0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff 00 25 |..... ..|... ...%|
|00002000| 61 6c 20 63 69 72 63 75 | 69 74 72 79 2c 20 73 75 |al circu|itry, su|
|00002010| 63 68 20 61 73 20 74 68 | 65 20 6b 65 79 62 6f 61 |ch as th|e keyboa|
|00002020| 72 64 2c 20 64 69 73 63 | 20 69 6e 74 65 72 66 61 |rd, disc| interfa|
|00002030| 63 65 20 61 6e 64 20 73 | 65 72 69 61 6c 20 70 6f |ce and s|erial po|
|00002040| 72 74 2e 0d 0d 54 48 45 | 20 49 4f 20 43 4f 4e 54 |rt...THE| IO CONT|
|00002050| 52 4f 4c 4c 45 52 0d 09 | 41 6c 6c 20 70 65 72 69 |ROLLER..|All peri|
|00002060| 70 68 65 72 61 6c 20 49 | 6e 70 75 74 2f 4f 75 74 |pheral I|nput/Out|
|00002070| 70 75 74 20 28 49 4f 29 | 20 6f 70 65 72 61 74 69 |put (IO)| operati|
|00002080| 6f 6e 73 20 61 72 65 20 | 65 69 74 68 65 72 20 70 |ons are |either p|
|00002090| 65 72 66 6f 72 6d 65 64 | 20 62 79 2c 20 6f 72 20 |erformed| by, or |
|000020a0| 63 6f 6e 74 72 6f 6c 6c | 65 64 20 62 79 2c 20 74 |controll|ed by, t|
|000020b0| 68 65 20 66 6f 75 72 74 | 68 20 63 68 69 70 20 69 |he fourt|h chip i|
|000020c0| 6e 20 74 68 65 20 41 52 | 4d 20 63 68 69 70 2d 73 |n the AR|M chip-s|
|000020d0| 65 74 20 2d 20 49 4f 43 | 20 2d 20 77 68 69 63 68 |et - IOC| - which|
|000020e0| 20 70 72 6f 76 69 64 65 | 73 20 61 6e 20 69 6e 74 | provide|s an int|
|000020f0| 65 72 66 61 63 65 20 62 | 65 74 77 65 65 6e 20 74 |erface b|etween t|
|00002100| 68 65 20 72 65 73 74 20 | 6f 66 20 74 68 65 20 41 |he rest |of the A|
|00002110| 52 4d 20 63 68 69 70 20 | 73 65 74 20 61 6e 64 20 |RM chip |set and |
|00002120| 73 74 61 6e 64 61 72 64 | 20 70 65 72 69 70 68 65 |standard| periphe|
|00002130| 72 61 6c 20 63 6f 6e 74 | 72 6f 6c 6c 65 72 20 63 |ral cont|roller c|
|00002140| 68 69 70 73 20 73 75 63 | 68 20 61 73 20 74 68 65 |hips suc|h as the|
|00002150| 20 66 6c 6f 70 70 79 20 | 64 69 73 63 20 63 6f 6e | floppy |disc con|
|00002160| 74 72 6f 6c 6c 65 72 20 | 61 6e 64 20 74 68 65 20 |troller |and the |
|00002170| 73 65 72 69 61 6c 20 63 | 6f 6e 74 72 6f 6c 6c 65 |serial c|ontrolle|
|00002180| 72 2e 20 54 6f 20 75 6e | 64 65 72 73 74 61 6e 64 |r. To un|derstand|
|00002190| 20 77 68 61 74 20 49 4f | 43 20 64 6f 65 73 2c 20 | what IO|C does, |
|000021a0| 77 65 20 6e 65 65 64 20 | 74 6f 20 6c 6f 6f 6b 20 |we need |to look |
|000021b0| 61 74 20 74 68 65 20 70 | 72 6f 62 6c 65 6d 73 20 |at the p|roblems |
|000021c0| 6f 66 20 61 63 63 65 73 | 73 69 6e 67 20 70 65 72 |of acces|sing per|
|000021d0| 69 70 68 65 72 61 6c 20 | 64 65 76 69 63 65 73 2e |ipheral |devices.|
|000021e0| 20 49 6e 20 67 65 6e 65 | 72 61 6c 2c 20 65 61 63 | In gene|ral, eac|
|000021f0| 68 20 70 65 72 69 70 68 | 65 72 61 6c 20 73 79 73 |h periph|eral sys|
|00002200| 74 65 6d 20 28 66 6c 6f | 70 70 79 20 64 69 73 63 |tem (flo|ppy disc|
|00002210| 2c 20 68 61 72 64 20 64 | 69 73 63 2c 20 73 65 72 |, hard d|isc, ser|
|00002220| 69 61 6c 20 70 6f 72 74 | 2c 20 65 74 63 2e 29 20 |ial port|, etc.) |
|00002230| 69 73 20 63 6f 6e 74 72 | 6f 6c 6c 65 64 20 62 79 |is contr|olled by|
|00002240| 20 61 6e 20 6f 66 66 2d | 74 68 65 2d 73 68 65 6c | an off-|the-shel|
|00002250| 66 20 63 68 69 70 20 64 | 65 73 69 67 6e 65 64 20 |f chip d|esigned |
|00002260| 66 6f 72 20 74 68 61 74 | 20 70 61 72 74 69 63 75 |for that| particu|
|00002270| 6c 61 72 20 69 6e 74 65 | 72 66 61 63 69 6e 67 20 |lar inte|rfacing |
|00002280| 6f 70 65 72 61 74 69 6f | 6e 2e 20 55 6e 66 6f 72 |operatio|n. Unfor|
|00002290| 74 75 6e 61 74 65 6c 79 | 2c 20 61 73 20 74 68 65 |tunately|, as the|
|000022a0| 73 65 20 69 6e 74 65 72 | 66 61 63 65 20 63 68 69 |se inter|face chi|
|000022b0| 70 73 20 61 72 65 20 6e | 6f 74 20 64 65 73 69 67 |ps are n|ot desig|
|000022c0| 6e 65 64 20 73 70 65 63 | 69 66 69 63 61 6c 6c 79 |ned spec|ifically|
|000022d0| 20 66 6f 72 20 75 73 65 | 20 77 69 74 68 20 74 68 | for use| with th|
|000022e0| 65 20 41 52 4d 2c 20 74 | 68 65 79 20 64 6f 20 6e |e ARM, t|hey do n|
|000022f0| 6f 74 20 64 6f 76 65 74 | 61 69 6c 20 69 6e 74 6f |ot dovet|ail into|
|00002300| 20 74 68 65 20 73 79 73 | 74 65 6d 20 69 6e 20 74 | the sys|tem in t|
|00002310| 68 65 20 73 61 6d 65 20 | 77 61 79 20 74 68 61 74 |he same |way that|
|00002320| 20 4d 45 4d 43 20 61 6e | 64 20 56 49 44 43 20 64 | MEMC an|d VIDC d|
|00002330| 6f 2e 20 46 75 72 74 68 | 65 72 6d 6f 72 65 2c 20 |o. Furth|ermore, |
|00002340| 74 68 65 73 65 20 64 65 | 76 69 63 65 73 20 68 61 |these de|vices ha|
|00002350| 76 65 20 74 6f 20 69 6e | 74 65 72 66 61 63 65 20 |ve to in|terface |
|00002360| 77 69 74 68 20 74 68 65 | 20 d4 6f 75 74 73 69 64 |with the| .outsid|
|00002370| 65 20 77 6f 72 6c 64 d5 | 2c 20 61 6e 64 20 61 73 |e world.|, and as|
|00002380| 20 65 78 74 65 72 6e 61 | 6c 20 65 76 65 6e 74 73 | externa|l events|
|00002390| 20 63 61 6e 20 6f 63 63 | 75 72 20 61 74 20 61 6e | can occ|ur at an|
|000023a0| 79 20 74 69 6d 65 2c 20 | 74 68 65 79 20 63 61 6e |y time, |they can|
|000023b0| 6e 6f 74 20 62 65 20 67 | 75 61 72 61 6e 74 65 65 |not be g|uarantee|
|000023c0| 64 20 74 6f 20 62 65 20 | 73 79 6e 63 68 72 6f 6e |d to be |synchron|
|000023d0| 6f 75 73 20 77 69 74 68 | 20 74 68 65 20 6f 70 65 |ous with| the ope|
|000023e0| 72 61 74 69 6f 6e 20 6f | 66 20 74 68 65 20 41 52 |ration o|f the AR|
|000023f0| 4d 20 70 72 6f 63 65 73 | 73 6f 72 2e 20 54 6f 20 |M proces|sor. To |
|00002400| ff ff 00 01 00 02 00 0a | 00 00 00 00 00 00 00 00 |........|........|
|00002410| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002420| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00002430| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00002440| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00002450| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00002460| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00002470| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00002480| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00002490| ff ff 00 20 ff ff ff ff | 00 03 03 00 00 05 00 00 |... ....|........|
|000024a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 01 00 00 |........|........|
|000024b0| 00 00 00 00 00 00 00 20 | 00 12 00 00 00 20 ff ff |....... |..... ..|
|000024c0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000024d0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000024e0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000024f0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 2c |... ....|. .....,|
|00002500| 79 20 69 73 20 74 68 61 | 74 20 61 73 20 61 6e 20 |y is tha|t as an |
|00002510| 49 4f 20 61 63 63 65 73 | 73 20 63 61 6e 20 6c 61 |IO acces|s can la|
|00002520| 73 74 20 61 6e 20 61 72 | 62 69 74 72 61 72 69 6c |st an ar|bitraril|
|00002530| 79 20 6c 6f 6e 67 20 74 | 69 6d 65 2c 20 69 74 20 |y long t|ime, it |
|00002540| 6d 75 73 74 20 62 65 20 | 70 6f 73 73 69 62 6c 65 |must be |possible|
|00002550| 20 74 6f 20 70 65 72 66 | 6f 72 6d 20 61 20 44 4d | to perf|orm a DM|
|00002560| 41 20 63 79 63 6c 65 20 | 69 6e 20 74 68 65 20 6d |A cycle |in the m|
|00002570| 69 64 64 6c 65 20 6f 66 | 20 69 74 2c 20 61 73 20 |iddle of| it, as |
|00002580| 64 65 73 63 72 69 62 65 | 64 20 6c 61 73 74 20 6d |describe|d last m|
|00002590| 6f 6e 74 68 2c 20 6f 74 | 68 65 72 77 69 73 65 20 |onth, ot|herwise |
|000025a0| 65 66 66 65 63 74 73 20 | 73 75 63 68 20 61 73 20 |effects |such as |
|000025b0| 66 6c 69 63 6b 65 72 69 | 6e 67 20 6f 6e 20 74 68 |flickeri|ng on th|
|000025c0| 65 20 73 63 72 65 65 6e | 20 77 6f 75 6c 64 20 62 |e screen| would b|
|000025d0| 65 20 73 65 65 6e 2e 20 | 46 6f 72 20 74 68 69 73 |e seen. |For this|
|000025e0| 20 72 65 61 73 6f 6e 2c | 20 74 68 65 20 70 65 72 | reason,| the per|
|000025f0| 69 70 68 65 72 61 6c 20 | 63 6f 6e 74 72 6f 6c 6c |ipheral |controll|
|00002600| 65 72 73 20 68 61 76 65 | 20 74 6f 20 75 73 65 20 |ers have| to use |
|00002610| 61 20 73 65 70 61 72 61 | 74 65 20 64 61 74 61 20 |a separa|te data |
|00002620| 62 75 73 20 66 72 6f 6d | 20 74 68 65 20 41 52 4d |bus from| the ARM|
|00002630| 20 70 72 6f 63 65 73 73 | 6f 72 2c 20 73 6f 20 74 | process|or, so t|
|00002640| 68 61 74 20 61 6e 20 49 | 4f 20 6f 70 65 72 61 74 |hat an I|O operat|
|00002650| 69 6f 6e 20 63 61 6e 20 | 63 6f 6e 74 69 6e 75 65 |ion can |continue|
|00002660| 20 64 75 72 69 6e 67 20 | 61 20 44 4d 41 20 74 72 | during |a DMA tr|
|00002670| 61 6e 73 66 65 72 2e 20 | 4c 61 74 63 68 65 73 20 |ansfer. |Latches |
|00002680| 61 72 65 20 75 73 65 64 | 20 74 6f 20 68 6f 6c 64 |are used| to hold|
|00002690| 20 74 68 65 20 64 61 74 | 61 20 66 6f 72 20 74 68 | the dat|a for th|
|000026a0| 65 20 49 4f 20 6f 70 65 | 72 61 74 69 6f 6e 2e 20 |e IO ope|ration. |
|000026b0| 46 69 67 75 72 65 20 31 | 20 69 73 20 61 20 62 6c |Figure 1| is a bl|
|000026c0| 6f 63 6b 20 64 69 61 67 | 72 61 6d 20 73 68 6f 77 |ock diag|ram show|
|000026d0| 69 6e 67 20 74 68 65 20 | 61 72 72 61 6e 67 65 6d |ing the |arrangem|
|000026e0| 65 6e 74 20 6f 66 20 49 | 4f 43 2e 0d 0d 09 54 6f |ent of I|OC....To|
|000026f0| 20 61 63 68 69 65 76 65 | 20 61 6c 6c 20 74 68 69 | achieve| all thi|
|00002700| 73 2c 20 4d 45 4d 43 20 | 61 73 73 65 72 74 73 20 |s, MEMC |asserts |
|00002710| 61 20 73 69 67 6e 61 6c | 20 63 61 6c 6c 65 64 20 |a signal| called |
|00002720| 49 4f 52 51 20 28 49 4f | 20 52 65 71 75 65 73 74 |IORQ (IO| Request|
|00002730| 29 20 77 68 65 6e 65 76 | 65 72 20 61 6e 20 61 63 |) whenev|er an ac|
|00002740| 63 65 73 73 20 69 73 20 | 6d 61 64 65 20 74 6f 20 |cess is |made to |
|00002750| 61 6e 20 49 4f 20 64 65 | 76 69 63 65 2e 20 4d 45 |an IO de|vice. ME|
|00002760| 4d 43 20 74 68 65 6e 20 | 77 61 69 74 73 20 75 6e |MC then |waits un|
|00002770| 74 69 6c 20 74 68 65 20 | 49 4f 20 64 65 76 69 63 |til the |IO devic|
|00002780| 65 20 61 73 73 65 72 74 | 73 20 61 6e 6f 74 68 65 |e assert|s anothe|
|00002790| 72 20 73 69 67 6e 61 6c | 2c 20 49 4f 47 54 2c 20 |r signal|, IOGT, |
|000027a0| 74 6f 20 61 6e 6e 6f 75 | 6e 63 65 20 74 68 61 74 |to annou|nce that|
|000027b0| 20 74 68 65 20 6f 70 65 | 72 61 74 69 6f 6e 20 69 | the ope|ration i|
|000027c0| 73 20 63 6f 6d 70 6c 65 | 74 65 2e 20 41 6c 6c 20 |s comple|te. All |
|000027d0| 74 68 69 73 2c 20 74 68 | 6f 75 67 68 2c 20 69 73 |this, th|ough, is|
|000027e0| 20 66 61 72 20 74 6f 6f | 20 63 6f 6d 70 6c 65 78 | far too| complex|
|000027f0| 20 66 6f 72 20 74 68 65 | 20 61 76 65 72 61 67 65 | for the| average|
|00002800| 20 70 65 72 69 70 68 65 | 72 61 6c 20 63 6f 6e 74 | periphe|ral cont|
|00002810| 72 6f 6c 6c 65 72 20 63 | 68 69 70 2c 20 61 6e 64 |roller c|hip, and|
|00002820| 20 68 65 6e 63 65 20 49 | 4f 43 20 70 65 72 66 6f | hence I|OC perfo|
|00002830| 72 6d 73 20 74 68 65 20 | 6e 65 63 65 73 73 61 72 |rms the |necessar|
|00002840| 79 20 6f 70 65 72 61 74 | 69 6f 6e 73 20 61 75 74 |y operat|ions aut|
|00002850| 6f 6d 61 74 69 63 61 6c | 6c 79 2e 20 48 6f 77 65 |omatical|ly. Howe|
|00002860| 76 65 72 2c 20 74 6f 20 | 64 6f 20 74 68 69 73 2c |ver, to |do this,|
|00002870| 20 49 4f 43 20 68 61 73 | 20 74 6f 20 6d 61 6b 65 | IOC has| to make|
|00002880| 20 61 73 73 75 6d 70 74 | 69 6f 6e 73 20 61 62 6f | assumpt|ions abo|
|00002890| 75 74 20 68 6f 77 20 66 | 61 73 74 20 74 68 65 20 |ut how f|ast the |
|000028a0| 70 65 72 69 70 68 65 72 | 61 6c 20 64 65 76 69 63 |peripher|al devic|
|000028b0| 65 20 63 61 6e 20 70 65 | 72 66 6f 72 6d 20 61 6e |e can pe|rform an|
|000028c0| 20 6f 70 65 72 61 74 69 | 6f 6e 2e 20 54 6f 20 61 | operati|on. To a|
|000028d0| 6c 6c 6f 77 20 74 68 69 | 73 2c 20 49 4f 43 20 63 |llow thi|s, IOC c|
|000028e0| 61 6e 20 70 65 72 66 6f | 72 6d 20 61 6e 79 20 70 |an perfo|rm any p|
|000028f0| 65 72 69 70 68 65 72 61 | 6c 20 61 63 63 65 73 73 |eriphera|l access|
|00002900| 20 61 74 20 6f 6e 65 20 | 6f 66 20 66 6f 75 72 20 | at one |of four |
|00002910| 64 69 66 66 65 72 65 6e | 74 20 73 70 65 65 64 73 |differen|t speeds|
|00002920| 2e 20 54 68 72 65 65 20 | 6f 66 20 74 68 65 73 65 |. Three |of these|
|00002930| 20 61 72 65 20 66 61 73 | 74 2c 20 6d 65 64 69 75 | are fas|t, mediu|
|00002940| 6d 20 61 6e 64 20 73 6c | 6f 77 20 77 68 69 63 68 |m and sl|ow which|
|00002950| 20 73 69 6d 70 6c 79 20 | 77 61 69 74 20 61 20 66 | simply |wait a f|
|00002960| 69 78 65 64 20 74 69 6d | 65 20 61 66 74 65 72 20 |ixed tim|e after |
|00002970| 74 68 65 20 73 74 61 72 | 74 20 6f 66 20 74 68 65 |the star|t of the|
|00002980| 20 6f 70 65 72 61 74 69 | 6f 6e 20 62 65 66 6f 72 | operati|on befor|
|00002990| 65 20 61 73 73 65 72 74 | 69 6e 67 20 49 4f 47 54 |e assert|ing IOGT|
|000029a0| 2e 20 54 68 65 20 66 69 | 6e 61 6c 20 61 63 63 65 |. The fi|nal acce|
|000029b0| 73 73 20 6d 65 74 68 6f | 64 20 69 73 20 63 61 6c |ss metho|d is cal|
|000029c0| 6c 65 64 20 53 79 6e 63 | 2c 20 61 6e 64 20 73 79 |led Sync|, and sy|
|000029d0| 6e 63 68 72 6f 6e 69 73 | 65 73 20 74 68 65 20 61 |nchronis|es the a|
|000029e0| 63 63 65 73 73 20 74 6f | 20 61 20 32 4d 48 7a 20 |ccess to| a 2MHz |
|000029f0| 63 6c 6f 63 6b 20 73 69 | 67 6e 61 6c 2e 20 54 68 |clock si|gnal. Th|
|00002a00| 6f 20 66 61 72 20 69 6e | 20 74 68 69 73 20 73 65 |o far in| this se|
|00002a10| 72 69 65 73 2c 20 77 65 | 20 68 61 76 65 20 6c 6f |ries, we| have lo|
|00002a20| 6f 6b 65 64 20 61 74 20 | 74 68 65 20 41 52 4d 20 |oked at |the ARM |
|00002a30| 70 72 6f 63 65 73 73 6f | 72 20 69 74 73 65 6c 66 |processo|r itself|
|00002a40| 2c 20 74 68 65 20 6d 65 | 6d 6f 72 79 2c 20 61 6e |, the me|mory, an|
|00002a50| 64 20 74 68 65 20 76 69 | 64 65 6f 20 61 6e 64 20 |d the vi|deo and |
|00002a60| 73 6f 75 6e 64 20 73 79 | 73 74 65 6d 73 2e 20 54 |sound sy|stems. T|
|00002a70| 68 65 20 6f 6e 65 20 6d | 61 6a 6f 72 20 61 72 65 |he one m|ajor are|
|00002a80| 61 20 77 65 20 68 61 76 | 65 20 79 65 74 20 74 6f |a we hav|e yet to|
|00002a90| 20 65 78 61 6d 69 6e 65 | 20 69 73 20 74 68 65 20 | examine| is the |
|00002aa0| 70 65 72 69 70 68 65 72 | 65 72 72 65 6d 73 2e 20 |peripher|errems. |
|00002ab0| 54 68 65 20 6f 6e 65 20 | 6d 61 6a 6f 72 20 61 72 |The one |major ar|
|00002ac0| 65 61 20 77 65 20 68 61 | 76 65 20 79 65 74 20 74 |ea we ha|ve yet t|
|00002ad0| 6f 20 65 78 61 6d 69 6e | 65 20 69 73 20 74 68 65 |o examin|e is the|
|00002ae0| 20 70 65 72 69 70 68 65 | 72 61 6d 69 6e 65 20 69 | periphe|ramine i|
|00002af0| 73 20 74 68 65 20 70 65 | 72 69 70 68 65 72 72 72 |s the pe|ripherrr|
|00002b00| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00002b10| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00002b20| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00002b30| 00 04 00 01 00 01 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002b40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 20 |........|....... |
|00002b50| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00002b60| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00002b70| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00002b80| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00002b90| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00002ba0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00002bb0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00002bc0| 00 20 ff ff ff ff 00 02 | 00 01 00 0b 00 00 00 00 |. ......|........|
|00002bd0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002be0| 00 00 00 00 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00002bf0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ce |. ..... |..... ..|
|00002c00| 52 55 01 ce 00 00 03 54 | 02 40 02 51 00 00 00 74 |RU.....T|.@.Q...t|
|00002c10| 00 00 f7 24 01 ce 00 50 | 01 ce 02 2d 03 01 02 2d |...$...P|...-...-|
|00002c20| 03 01 02 2e 03 12 00 50 | 03 12 02 0f 03 13 02 0f |.......P|........|
|00002c30| 03 13 02 2e 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002c40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002c50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002c60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002c70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00002c80| 00 00 00 14 00 00 f1 d8 | 00 0a 00 00 00 00 00 00 |........|........|
|00002c90| 00 00 01 ce 00 00 00 20 | 7f ff 03 01 02 0f 02 2d |....... |.......-|
|00002ca0| 7f ff 03 12 00 50 02 0f | 7f ff 7f ff 02 0f 02 2e |.....P..|........|
|00002cb0| 7f ff 7f ff 00 00 00 14 | 00 00 f3 94 00 0a 03 01 |........|........|
|00002cc0| 02 0f 03 13 02 2e 00 00 | 00 00 00 90 00 00 f8 10 |........|........|
|00002cd0| 80 32 17 f0 80 08 ff f4 | 00 00 00 01 00 0c 00 00 |.2......|........|
|00002ce0| 00 00 00 00 00 00 00 48 | 00 00 00 48 00 00 00 00 |.......H|...H....|
|00002cf0| 00 04 00 01 00 04 00 00 | 00 00 00 2c b0 98 00 00 |........|...,....|
|00002d00| 73 20 75 73 65 64 20 74 | 6f 20 74 72 61 6e 73 66 |s used t|o transf|
|00002d10| 65 72 20 64 61 74 61 20 | 74 6f 20 61 6e 64 20 66 |er data |to and f|
|00002d20| 72 6f 6d 20 74 68 65 20 | 6b 65 79 62 6f 61 72 64 |rom the |keyboard|
|00002d30| 2e 20 54 68 65 20 6b 65 | 79 62 6f 61 72 64 20 69 |. The ke|yboard i|
|00002d40| 74 73 65 6c 66 20 63 6f | 6e 74 61 69 6e 73 20 69 |tself co|ntains i|
|00002d50| 74 73 20 6f 77 6e 20 70 | 72 6f 63 65 73 73 6f 72 |ts own p|rocessor|
|00002d60| 20 77 68 69 63 68 20 69 | 73 20 75 73 65 64 20 74 | which i|s used t|
|00002d70| 6f 20 63 6f 6e 74 72 6f | 6c 20 74 68 65 20 6f 74 |o contro|l the ot|
|00002d80| 68 65 72 20 65 6e 64 20 | 6f 66 20 74 68 65 20 73 |her end |of the s|
|00002d90| 65 72 69 61 6c 20 6c 69 | 6e 6b 20 61 6e 64 20 73 |erial li|nk and s|
|00002da0| 63 61 6e 20 74 68 65 20 | 6b 65 79 62 6f 61 72 64 |can the |keyboard|
|00002db0| 2e 20 49 4f 43 20 61 6c | 73 6f 20 63 6f 6e 74 61 |. IOC al|so conta|
|00002dc0| 69 6e 73 20 61 20 73 69 | 78 2d 62 69 74 20 67 65 |ins a si|x-bit ge|
|00002dd0| 6e 65 72 61 6c 20 70 75 | 72 70 6f 73 65 20 49 4f |neral pu|rpose IO|
|00002de0| 20 70 6f 72 74 20 77 68 | 69 63 68 20 69 73 20 75 | port wh|ich is u|
|00002df0| 73 65 64 20 66 6f 72 20 | 76 61 72 69 6f 75 73 20 |sed for |various |
|00002e00| 69 6e 74 65 72 6e 61 6c | 20 70 75 72 70 6f 73 65 |internal| purpose|
|00002e10| 73 20 73 75 63 68 20 61 | 73 20 6d 75 74 69 6e 67 |s such a|s muting|
|00002e20| 20 74 68 65 20 69 6e 74 | 65 72 6e 61 6c 20 73 70 | the int|ernal sp|
|00002e30| 65 61 6b 65 72 20 61 6e | 64 20 6d 6f 6e 69 74 6f |eaker an|d monito|
|00002e40| 72 69 6e 67 20 74 68 65 | 20 61 63 6b 6e 6f 77 6c |ring the| acknowl|
|00002e50| 65 64 67 65 20 73 69 67 | 6e 61 6c 20 66 72 6f 6d |edge sig|nal from|
|00002e60| 20 74 68 65 20 70 72 69 | 6e 74 65 72 2e 20 53 6f | the pri|nter. So|
|00002e70| 6d 65 20 6f 74 68 65 72 | 20 66 65 61 74 75 72 65 |me other| feature|
|00002e80| 73 20 6f 66 20 49 4f 43 | 20 61 72 65 20 64 65 73 |s of IOC| are des|
|00002e90| 63 72 69 62 65 64 20 6c | 61 74 65 72 2e 0d 0d 54 |cribed l|ater...T|
|00002ea0| 48 45 20 49 4f 20 4d 45 | 4d 4f 52 59 20 4d 41 50 |HE IO ME|MORY MAP|
|00002eb0| 0d 09 41 6c 6c 20 77 65 | 20 68 61 76 65 20 73 6f |..All we| have so|
|00002ec0| 20 66 61 72 20 6c 6f 6f | 6b 65 64 20 61 74 20 61 | far loo|ked at a|
|00002ed0| 72 65 20 74 68 65 20 62 | 61 73 69 63 73 20 6f 66 |re the b|asics of|
|00002ee0| 20 20 49 4f 20 61 63 63 | 65 73 73 65 73 2c 20 62 | IO acc|esses, b|
|00002ef0| 75 74 20 6e 6f 74 20 61 | 74 20 68 6f 77 20 74 68 |ut not a|t how th|
|00002f00| 65 20 41 52 4d 20 70 72 | 6f 63 65 73 73 6f 72 20 |e ARM pr|ocessor |
|00002f10| 61 63 74 75 61 6c 6c 79 | 20 70 65 72 66 6f 72 6d |actually| perform|
|00002f20| 73 20 74 68 65 6d 2e 20 | 49 6e 20 66 61 63 74 2c |s them. |In fact,|
|00002f30| 20 49 4f 20 64 65 76 69 | 63 65 73 20 61 70 70 65 | IO devi|ces appe|
|00002f40| 61 72 20 74 6f 20 74 68 | 65 20 70 72 6f 63 65 73 |ar to th|e proces|
|00002f50| 73 6f 72 20 61 73 20 6d | 65 6d 6f 72 79 20 6c 6f |sor as m|emory lo|
|00002f60| 63 61 74 69 6f 6e 73 2c | 20 61 6e 64 20 61 72 65 |cations,| and are|
|00002f70| 20 61 63 63 65 73 73 65 | 64 20 75 73 69 6e 67 20 | accesse|d using |
|00002f80| 74 68 65 20 53 54 52 20 | 61 6e 64 20 4c 44 52 20 |the STR |and LDR |
|00002f90| 69 6e 73 74 72 75 63 74 | 69 6f 6e 73 2e 20 52 65 |instruct|ions. Re|
|00002fa0| 66 65 72 72 69 6e 67 20 | 62 61 63 6b 20 74 6f 20 |ferring |back to |
|00002fb0| 74 68 65 20 41 52 4d 20 | 73 79 73 74 65 6d 20 6d |the ARM |system m|
|00002fc0| 65 6d 6f 72 79 20 6d 61 | 70 20 67 69 76 65 6e 20 |emory ma|p given |
|00002fd0| 69 6e 20 74 68 65 20 73 | 65 63 6f 6e 64 20 61 72 |in the s|econd ar|
|00002fe0| 74 69 63 6c 65 20 69 6e | 20 74 68 69 73 20 73 65 |ticle in| this se|
|00002ff0| 72 69 65 73 2c 20 74 68 | 65 20 34 4d 62 79 74 65 |ries, th|e 4Mbyte|
|00003000| 73 20 6f 66 20 61 64 64 | 72 65 73 73 20 73 70 61 |s of add|ress spa|
|00003010| 63 65 20 62 65 74 77 65 | 65 6e 20 61 64 64 72 65 |ce betwe|en addre|
|00003020| 73 73 20 26 33 30 30 30 | 30 30 30 20 61 6e 64 20 |ss &3000|000 and |
|00003030| 26 33 34 30 30 30 30 30 | 20 69 73 20 61 6c 6c 6f |&3400000| is allo|
|00003040| 63 61 74 65 64 20 74 6f | 20 d4 49 6e 70 75 74 2f |cated to| .Input/|
|00003050| 4f 75 74 70 75 74 20 43 | 6f 6e 74 72 6f 6c 6c 65 |Output C|ontrolle|
|00003060| 72 73 d5 2e 20 48 6f 77 | 65 76 65 72 2c 20 69 6e |rs.. How|ever, in|
|00003070| 20 74 68 65 20 41 72 63 | 68 69 6d 65 64 65 73 2c | the Arc|himedes,|
|00003080| 20 6f 6e 6c 79 20 74 68 | 65 20 74 6f 70 20 68 61 | only th|e top ha|
|00003090| 6c 66 20 6f 66 20 74 68 | 69 73 20 69 73 20 75 73 |lf of th|is is us|
|000030a0| 65 64 20 74 6f 20 61 63 | 63 65 73 73 20 49 4f 43 |ed to ac|cess IOC|
|000030b0| 2c 20 77 68 69 6c 65 20 | 74 68 65 20 62 6f 74 74 |, while |the bott|
|000030c0| 6f 6d 20 68 61 6c 66 20 | 69 73 20 6c 65 66 74 20 |om half |is left |
|000030d0| 66 72 65 65 2e 0d 0d 09 | 49 4f 43 20 66 75 72 74 |free....|IOC furt|
|000030e0| 68 65 72 20 73 70 6c 69 | 74 73 20 69 74 73 20 61 |her spli|ts its a|
|000030f0| 6c 6c 6f 63 61 74 69 6f | 6e 20 69 6e 74 6f 20 66 |llocatio|n into f|
|00003100| 00 02 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |....... |..... ..|
|00003110| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00003120| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00003130| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00003140| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00003150| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00003160| 00 06 00 02 00 01 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003170| 00 00 00 01 00 01 00 00 | 00 00 00 00 00 00 00 20 |........|....... |
|00003180| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00003190| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000031a0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000031b0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000031c0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000031d0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000031e0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000031f0| 00 20 ff ff ff ff 00 05 | 03 03 00 03 00 00 00 00 |. ......|........|
|00003200| 00 00 00 00 00 00 00 00 | 00 02 33 33 00 00 00 00 |........|..33....|
|00003210| 00 00 00 00 00 20 00 12 | 00 00 00 20 ff ff ff ff |..... ..|... ....|
|00003220| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00003230| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00003240| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00003250| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00003260| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00003270| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00003280| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 23 03 03 |. ..... |.....#..|
|00003290| 00 02 00 00 00 00 00 00 | 00 00 00 00 00 00 00 02 |........|........|
|000032a0| 33 33 00 00 00 00 00 00 | 00 00 00 20 00 12 00 00 |33......|... ....|
|000032b0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000032c0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000032d0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000032e0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000032f0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 3b |... ....|. .....;|
|00003300| 74 72 61 20 70 6f 64 75 | 6c 65 73 20 74 68 61 74 |tra podu|les that|
|00003310| 20 63 61 6e 20 62 65 20 | 61 64 64 65 64 20 6f 75 | can be |added ou|
|00003320| 74 73 69 64 65 20 74 68 | 65 20 63 6f 6d 70 75 74 |tside th|e comput|
|00003330| 65 72 2e 20 54 68 65 20 | 49 43 20 63 6f 6c 75 6d |er. The |IC colum|
|00003340| 6e 20 69 6e 64 69 63 61 | 74 65 73 20 74 68 65 20 |n indica|tes the |
|00003350| 64 65 76 69 63 65 20 6e | 75 6d 62 65 72 73 20 6f |device n|umbers o|
|00003360| 66 20 74 68 65 20 69 6e | 64 69 76 69 64 75 61 6c |f the in|dividual|
|00003370| 20 70 65 72 69 70 68 65 | 72 61 6c 20 63 6f 6e 74 | periphe|ral cont|
|00003380| 72 6f 6c 6c 65 72 20 63 | 68 69 70 73 2c 20 61 6e |roller c|hips, an|
|00003390| 64 20 79 6f 75 20 63 61 | 6e 20 66 69 6e 64 20 6d |d you ca|n find m|
|000033a0| 6f 72 65 20 64 65 74 61 | 69 6c 73 20 6f 66 20 74 |ore deta|ils of t|
|000033b0| 68 65 73 65 20 62 79 20 | 72 65 66 65 72 72 69 6e |hese by |referrin|
|000033c0| 67 20 74 6f 20 74 68 65 | 20 63 68 69 70 73 d5 20 |g to the| chips. |
|000033d0| 64 61 74 61 20 73 68 65 | 65 74 73 20 28 61 76 61 |data she|ets (ava|
|000033e0| 69 6c 61 62 6c 65 20 66 | 72 6f 6d 20 63 6f 6d 70 |ilable f|rom comp|
|000033f0| 6f 6e 65 6e 74 20 73 75 | 70 70 6c 69 65 72 73 29 |onent su|ppliers)|
|00003400| 2e 20 54 68 65 20 74 79 | 70 65 20 63 6f 6c 75 6d |. The ty|pe colum|
|00003410| 6e 20 73 68 6f 77 73 20 | 74 68 65 20 61 63 63 65 |n shows |the acce|
|00003420| 73 73 20 73 70 65 65 64 | 2c 20 77 68 69 6c 65 20 |ss speed|, while |
|00003430| 74 68 65 20 62 61 6e 6b | 20 6e 75 6d 62 65 72 20 |the bank| number |
|00003440| 72 65 66 65 72 73 20 74 | 6f 20 74 68 65 20 62 6c |refers t|o the bl|
|00003450| 6f 63 6b 20 61 73 20 64 | 65 63 6f 64 65 64 20 62 |ock as d|ecoded b|
|00003460| 79 20 49 4f 43 2e 20 54 | 68 65 20 74 77 6f 20 6c |y IOC. T|he two l|
|00003470| 61 74 63 68 65 73 20 28 | 4c 61 74 63 68 20 41 20 |atches (|Latch A |
|00003480| 61 6e 64 20 42 29 20 61 | 72 65 20 75 73 65 64 20 |and B) a|re used |
|00003490| 74 6f 20 63 6f 6e 74 72 | 6f 6c 20 76 61 72 69 6f |to contr|ol vario|
|000034a0| 75 73 20 66 65 61 74 75 | 72 65 73 20 6f 66 20 74 |us featu|res of t|
|000034b0| 68 65 20 66 6c 6f 70 70 | 79 20 64 69 73 63 20 73 |he flopp|y disc s|
|000034c0| 79 73 74 65 6d 2c 20 73 | 75 63 68 20 61 73 20 77 |ystem, s|uch as w|
|000034d0| 68 69 63 68 20 64 72 69 | 76 65 20 74 6f 20 75 73 |hich dri|ve to us|
|000034e0| 65 2e 0d 0d 09 41 20 76 | 65 72 79 20 69 6d 70 6f |e....A v|ery impo|
|000034f0| 72 74 61 6e 74 20 70 6f | 69 6e 74 20 74 6f 20 6e |rtant po|int to n|
|00003500| 6f 74 65 20 68 65 72 65 | 20 69 73 20 74 68 65 20 |ote here| is the |
|00003510| 77 69 64 74 68 20 6f 66 | 20 74 68 65 20 64 61 74 |width of| the dat|
|00003520| 61 20 62 75 73 20 75 73 | 65 64 20 66 6f 72 20 70 |a bus us|ed for p|
|00003530| 65 72 69 70 68 65 72 61 | 6c 20 64 65 76 69 63 65 |eriphera|l device|
|00003540| 73 2e 20 52 65 6d 65 6d | 62 65 72 20 74 68 61 74 |s. Remem|ber that|
|00003550| 20 74 68 65 20 41 52 4d | 20 20 69 74 73 65 6c 66 | the ARM| itself|
|00003560| 20 75 73 65 73 20 33 32 | 2d 62 69 74 20 77 6f 72 | uses 32|-bit wor|
|00003570| 64 73 2c 20 61 6e 64 20 | 68 65 6e 63 65 20 74 68 |ds, and |hence th|
|00003580| 65 20 61 64 64 72 65 73 | 73 65 73 20 6f 66 20 74 |e addres|ses of t|
|00003590| 77 6f 20 61 64 6a 61 63 | 65 6e 74 20 77 6f 72 64 |wo adjac|ent word|
|000035a0| 73 20 69 6e 20 6d 65 6d | 6f 72 79 20 64 69 66 66 |s in mem|ory diff|
|000035b0| 65 72 20 62 79 20 61 20 | 76 61 6c 75 65 20 6f 66 |er by a |value of|
|000035c0| 20 66 6f 75 72 20 28 62 | 65 63 61 75 73 65 20 74 | four (b|ecause t|
|000035d0| 68 65 20 61 64 64 72 65 | 73 73 20 69 73 20 61 6c |he addre|ss is al|
|000035e0| 77 61 79 73 20 73 70 65 | 63 69 66 69 65 64 20 69 |ways spe|cified i|
|000035f0| 6e 20 74 65 72 6d 73 20 | 6f 66 20 65 69 67 68 74 |n terms |of eight|
|00003600| 2d 62 69 74 20 62 79 74 | 65 73 29 2e 20 50 72 6f |-bit byt|es). Pro|
|00003610| 63 65 73 73 6f 72 73 20 | 74 68 61 74 20 75 73 65 |cessors |that use|
|00003620| 20 33 32 2d 62 69 74 20 | 64 61 74 61 20 62 75 73 | 32-bit |data bus|
|00003630| 65 73 20 61 72 65 20 61 | 6c 6c 20 72 65 6c 61 74 |es are a|ll relat|
|00003640| 69 76 65 6c 79 20 6e 65 | 77 2c 20 61 6e 64 20 61 |ively ne|w, and a|
|00003650| 6c 6d 6f 73 74 20 61 6c | 6c 20 74 68 65 20 61 76 |lmost al|l the av|
|00003660| 61 69 6c 61 62 6c 65 20 | 49 4f 20 63 6f 6e 74 72 |ailable |IO contr|
|00003670| 6f 6c 6c 65 72 73 20 77 | 6f 72 6b 20 77 69 74 68 |ollers w|ork with|
|00003680| 20 65 69 74 68 65 72 20 | 65 69 67 68 74 20 6f 72 | either |eight or|
|00003690| 20 73 69 78 74 65 65 6e | 2d 62 69 74 20 62 75 73 | sixteen|-bit bus|
|000036a0| 65 73 2e 20 49 6e 64 65 | 65 64 2c 20 49 4f 43 20 |es. Inde|ed, IOC |
|000036b0| 6c 69 6d 69 74 73 20 64 | 65 76 69 63 65 73 20 74 |limits d|evices t|
|000036c0| 6f 20 75 73 69 6e 67 20 | 61 6e 20 65 69 67 68 74 |o using |an eight|
|000036d0| 20 6f 72 20 73 69 78 74 | 65 65 6e 20 62 69 74 20 | or sixt|een bit |
|000036e0| 62 75 73 2e 20 4f 6e 20 | 74 68 65 20 41 72 63 68 |bus. On |the Arch|
|000036f0| 69 6d 65 64 65 73 2c 20 | 74 68 65 20 48 44 36 33 |imedes, |the HD63|
|00003700| 34 36 33 20 48 61 72 64 | 20 44 69 73 63 20 43 6f |463 Hard| Disc Co|
|00003710| 6e 74 72 6f 6c 6c 65 72 | 20 69 73 20 61 20 73 69 |ntroller| is a si|
|00003720| 78 74 65 65 6e 2d 62 69 | 74 20 64 65 76 69 63 65 |xteen-bi|t device|
|00003730| 2c 20 77 68 69 6c 65 20 | 61 6c 6c 20 74 68 65 20 |, while |all the |
|00003740| 6f 74 68 65 72 73 20 75 | 73 65 20 65 69 67 68 74 |others u|se eight|
|00003750| 20 62 69 74 73 2e 0d 0d | 09 41 20 66 69 6e 61 6c | bits...|.A final|
|00003760| 20 70 6f 69 6e 74 20 74 | 6f 20 6d 61 6b 65 20 69 | point t|o make i|
|00003770| 73 20 74 68 61 74 20 61 | 6c 6c 20 6f 66 20 74 68 |s that a|ll of th|
|00003780| 65 20 49 4f 43 20 61 64 | 64 72 65 73 73 20 73 70 |e IOC ad|dress sp|
|00003790| 61 63 65 20 69 73 20 70 | 72 6f 74 65 63 74 65 64 |ace is p|rotected|
|000037a0| 20 61 67 61 69 6e 73 74 | 20 62 65 69 6e 67 20 61 | against| being a|
|000037b0| 63 63 65 73 73 65 64 20 | 77 68 65 6e 20 74 68 65 |ccessed |when the|
|000037c0| 20 70 72 6f 63 65 73 73 | 6f 72 20 69 73 20 69 6e | process|or is in|
|000037d0| 20 75 73 65 72 20 6d 6f | 64 65 2e 20 54 68 65 72 | user mo|de. Ther|
|000037e0| 65 66 6f 72 65 20 61 6c | 6c 20 61 63 63 65 73 73 |efore al|l access|
|000037f0| 65 73 20 74 6f 20 49 4f | 20 64 65 76 69 63 65 73 |es to IO| devices|
|00003800| 20 6d 75 73 74 20 65 69 | 74 68 65 72 20 62 65 20 | must ei|ther be |
|00003810| 6d 61 64 65 20 66 72 6f | 6d 20 69 6e 74 65 72 72 |made fro|m interr|
|00003820| 75 70 74 20 63 6f 64 65 | 20 6f 72 20 77 69 74 68 |upt code| or with|
|00003830| 69 6e 20 61 20 6d 6f 64 | 75 6c 65 2c 20 75 6e 6c |in a mod|ule, unl|
|00003840| 65 73 73 20 61 20 73 68 | 6f 72 74 20 70 72 6f 67 |ess a sh|ort prog|
|00003850| 72 61 6d 20 69 73 20 75 | 73 65 64 20 74 6f 20 65 |ram is u|sed to e|
|00003860| 6e 74 65 72 20 73 75 70 | 65 72 76 69 73 6f 72 20 |nter sup|ervisor |
|00003870| 6d 6f 64 65 20 70 72 69 | 6f 72 20 74 6f 20 74 68 |mode pri|or to th|
|00003880| 65 20 74 72 61 6e 73 66 | 65 72 2e 0d 0d 49 4e 54 |e transf|er...INT|
|00003890| 45 52 52 55 50 54 53 0d | 09 49 6d 61 67 69 6e 65 |ERRUPTS.|.Imagine|
|000038a0| 20 77 68 61 74 20 68 61 | 73 20 74 6f 20 68 61 70 | what ha|s to hap|
|000038b0| 70 65 6e 20 77 68 65 6e | 20 61 20 70 72 6f 67 72 |pen when| a progr|
|000038c0| 61 6d 20 69 73 20 72 75 | 6e 6e 69 6e 67 2c 20 61 |am is ru|nning, a|
|000038d0| 6e 64 20 74 68 65 20 75 | 73 65 72 20 70 72 65 73 |nd the u|ser pres|
|000038e0| 73 65 73 20 61 20 6b 65 | 79 20 6f 6e 20 74 68 65 |ses a ke|y on the|
|000038f0| 20 6b 65 79 62 6f 61 72 | 64 2e 20 54 68 69 73 20 | keyboar|d. This |
|00003900| 6b 65 79 70 72 65 73 73 | 20 69 73 20 70 61 73 73 |keypress| is pass|
|00003910| 65 64 20 62 61 63 6b 20 | 74 6f 20 49 4f 43 2c 20 |ed back |to IOC, |
|00003920| 61 6e 64 20 69 6e 20 73 | 6f 6d 65 20 77 61 79 20 |and in s|ome way |
|00003930| 74 68 65 20 6f 70 65 72 | 61 74 69 6e 67 20 73 79 |the oper|ating sy|
|00003940| 73 74 65 6d 20 6d 75 73 | 74 20 74 61 6b 65 20 6e |stem mus|t take n|
|00003950| 6f 74 65 20 6f 66 20 69 | 74 2e 20 48 6f 77 65 76 |ote of i|t. Howev|
|00003960| 65 72 2c 20 62 65 63 61 | 75 73 65 20 61 20 70 72 |er, beca|use a pr|
|00003970| 6f 67 72 61 6d 20 69 73 | 20 72 75 6e 6e 69 6e 67 |ogram is| running|
|00003980| 2c 20 74 68 65 20 6f 70 | 65 72 61 74 69 6e 67 20 |, the op|erating |
|00003990| 73 79 73 74 65 6d 20 63 | 61 6e 6e 6f 74 20 6c 6f |system c|annot lo|
|000039a0| 6f 6b 20 61 74 20 49 4f | 43 20 63 6f 6e 73 74 61 |ok at IO|C consta|
|000039b0| 6e 74 6c 79 20 74 6f 20 | 63 61 74 63 68 20 65 61 |ntly to |catch ea|
|000039c0| 63 68 20 6b 65 79 70 72 | 65 73 73 2e 20 49 6e 73 |ch keypr|ess. Ins|
|000039d0| 74 65 61 64 2c 20 61 20 | 74 65 63 68 6e 69 71 75 |tead, a |techniqu|
|000039e0| 65 20 6b 6e 6f 77 6e 20 | 61 73 20 61 6e 20 69 6e |e known |as an in|
|000039f0| 74 65 72 72 75 70 74 20 | 69 73 20 75 73 65 64 2e |terrupt |is used.|
|00003a00| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00003a10| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00003a20| ff ff ff ff 00 12 00 00 | 00 01 00 00 00 00 00 00 |........|........|
|00003a30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00003a40| 00 00 00 20 00 07 00 00 | 00 20 00 40 00 00 00 20 |... ....|. .@... |
|00003a50| 00 62 00 00 00 20 00 83 | 00 00 00 20 00 b7 00 00 |.b... ..|... ....|
|00003a60| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00003a70| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00003a80| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00003a90| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00003aa0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00003ab0| ff ff ff ff 00 20 ff ff | ff ff 00 01 00 00 00 01 |..... ..|........|
|00003ac0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 01 00 01 |........|........|
|00003ad0| 00 00 00 00 00 00 00 00 | 00 20 ff ff ff ff 00 20 |........|. ..... |
|00003ae0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00003af0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 00 44 |. ..... |..... .D|
|00003b00| 20 57 68 61 74 20 68 61 | 70 70 65 6e 73 20 69 73 | What ha|ppens is|
|00003b10| 20 74 68 61 74 20 77 68 | 65 6e 20 61 20 6b 65 79 | that wh|en a key|
|00003b20| 2d 20 70 72 65 73 73 20 | 69 73 20 72 65 63 65 69 |- press |is recei|
|00003b30| 76 65 64 20 62 79 20 49 | 4f 43 2c 20 69 74 20 73 |ved by I|OC, it s|
|00003b40| 65 6e 64 73 20 61 20 73 | 69 67 6e 61 6c 20 6b 6e |ends a s|ignal kn|
|00003b50| 6f 77 6e 20 61 73 20 61 | 6e 20 69 6e 74 65 72 72 |own as a|n interr|
|00003b60| 75 70 74 20 72 65 71 75 | 65 73 74 20 28 49 52 51 |upt requ|est (IRQ|
|00003b70| 29 20 74 6f 20 74 68 65 | 20 41 52 4d 20 70 72 6f |) to the| ARM pro|
|00003b80| 63 65 73 73 6f 72 2e 20 | 4f 6e 20 72 65 63 65 69 |cessor. |On recei|
|00003b90| 70 74 20 6f 66 20 74 68 | 65 20 49 52 51 20 73 69 |pt of th|e IRQ si|
|00003ba0| 67 6e 61 6c 2c 20 74 68 | 65 20 6f 70 65 72 61 74 |gnal, th|e operat|
|00003bb0| 69 6e 67 20 73 79 73 74 | 65 6d 20 73 75 73 70 65 |ing syst|em suspe|
|00003bc0| 6e 64 73 20 65 78 65 63 | 75 74 69 6f 6e 20 6f 66 |nds exec|ution of|
|00003bd0| 20 74 68 65 20 70 72 6f | 67 72 61 6d 20 28 61 66 | the pro|gram (af|
|00003be0| 74 65 72 20 63 6f 6d 70 | 6c 65 74 69 6e 67 20 74 |ter comp|leting t|
|00003bf0| 68 65 20 63 75 72 72 65 | 6e 74 20 69 6e 73 74 72 |he curre|nt instr|
|00003c00| 75 63 74 69 6f 6e 29 20 | 61 6e 64 20 6a 75 6d 70 |uction) |and jump|
|00003c10| 73 20 74 6f 20 61 20 72 | 6f 75 74 69 6e 65 20 74 |s to a r|outine t|
|00003c20| 6f 20 72 65 61 64 20 74 | 68 65 20 6b 65 79 20 70 |o read t|he key p|
|00003c30| 72 65 73 73 20 61 6e 64 | 20 73 74 6f 72 65 20 69 |ress and| store i|
|00003c40| 74 20 66 6f 72 20 6c 61 | 74 65 72 2e 20 57 68 65 |t for la|ter. Whe|
|00003c50| 6e 20 74 68 69 73 20 68 | 61 73 20 62 65 65 6e 20 |n this h|as been |
|00003c60| 64 6f 6e 65 2c 20 65 78 | 65 63 75 74 69 6f 6e 20 |done, ex|ecution |
|00003c70| 6f 66 20 74 68 65 20 6f | 72 69 67 69 6e 61 6c 20 |of the o|riginal |
|00003c80| 70 72 6f 67 72 61 6d 20 | 69 73 20 72 65 73 75 6d |program |is resum|
|00003c90| 65 64 2e 20 54 68 65 20 | 65 6e 74 69 72 65 20 69 |ed. The |entire i|
|00003ca0| 6e 74 65 72 72 75 70 74 | 20 70 72 6f 63 65 73 73 |nterrupt| process|
|00003cb0| 20 74 61 6b 65 73 20 6f | 6e 6c 79 20 61 20 66 65 | takes o|nly a fe|
|00003cc0| 77 20 6d 69 63 72 6f 73 | 65 63 6f 6e 64 73 2c 20 |w micros|econds, |
|00003cd0| 61 6e 64 20 74 68 65 20 | 6d 61 69 6e 20 70 72 6f |and the |main pro|
|00003ce0| 67 72 61 6d 20 69 73 20 | 6f 62 6c 69 76 69 6f 75 |gram is |obliviou|
|00003cf0| 73 20 74 6f 20 74 68 65 | 20 66 61 63 74 20 74 68 |s to the| fact th|
|00003d00| 61 74 20 74 68 65 20 69 | 6e 74 65 72 72 75 70 74 |at the i|nterrupt|
|00003d10| 20 68 61 73 20 6f 63 63 | 75 72 72 65 64 2e 0d 0d | has occ|urred...|
|00003d20| 09 49 6e 74 65 72 72 75 | 70 74 73 20 63 6f 6e 73 |.Interru|pts cons|
|00003d30| 74 69 74 75 74 65 20 61 | 20 76 65 72 79 20 70 6f |titute a| very po|
|00003d40| 77 65 72 66 75 6c 20 74 | 65 63 68 6e 69 71 75 65 |werful t|echnique|
|00003d50| 20 77 68 65 6e 20 74 68 | 65 20 6f 70 65 72 61 74 | when th|e operat|
|00003d60| 69 6e 67 20 73 79 73 74 | 65 6d 20 69 73 20 72 65 |ing syst|em is re|
|00003d70| 71 75 69 72 65 64 20 74 | 6f 20 72 65 73 70 6f 6e |quired t|o respon|
|00003d80| 64 20 74 6f 20 65 76 65 | 6e 74 73 20 77 68 69 63 |d to eve|nts whic|
|00003d90| 68 20 68 61 70 70 65 6e | 20 61 73 79 6e 63 68 72 |h happen| asynchr|
|00003da0| 6f 6e 6f 75 73 6c 79 20 | 77 69 74 68 20 61 6e 79 |onously |with any|
|00003db0| 20 70 72 6f 67 72 61 6d | 20 62 65 69 6e 67 20 65 | program| being e|
|00003dc0| 78 65 63 75 74 65 64 2e | 20 41 73 20 74 68 69 73 |xecuted.| As this|
|00003dd0| 20 61 70 70 6c 69 65 73 | 20 74 6f 20 6d 6f 73 74 | applies| to most|
|00003de0| 20 49 4f 20 6f 70 65 72 | 61 74 69 6f 6e 73 2c 20 | IO oper|ations, |
|00003df0| 49 4f 43 20 6d 61 6b 65 | 73 20 65 78 74 65 6e 73 |IOC make|s extens|
|00003e00| 69 76 65 20 75 73 65 20 | 6f 66 20 69 6e 74 65 72 |ive use |of inter|
|00003e10| 72 75 70 74 73 2e 20 0d | 0d 09 54 68 65 72 65 20 |rupts. .|..There |
|00003e20| 69 73 20 61 20 73 65 63 | 6f 6e 64 20 6c 65 76 65 |is a sec|ond leve|
|00003e30| 6c 20 6f 66 20 69 6e 74 | 65 72 72 75 70 74 20 6b |l of int|errupt k|
|00003e40| 6e 6f 77 6e 20 61 73 20 | 74 68 65 20 46 61 73 74 |nown as |the Fast|
|00003e50| 20 49 6e 74 65 72 72 75 | 70 74 20 28 46 49 51 29 | Interru|pt (FIQ)|
|00003e60| 2e 20 54 68 65 73 65 20 | 61 72 65 20 73 69 6d 69 |. These |are simi|
|00003e70| 6c 61 72 20 74 6f 20 74 | 68 65 20 6e 6f 72 6d 61 |lar to t|he norma|
|00003e80| 6c 20 49 52 51 73 2c 20 | 62 75 74 20 61 72 65 20 |l IRQs, |but are |
|00003e90| 67 75 61 72 61 6e 74 65 | 65 64 20 61 20 71 75 69 |guarante|ed a qui|
|00003ea0| 63 6b 65 72 20 72 65 73 | 70 6f 6e 73 65 20 66 72 |cker res|ponse fr|
|00003eb0| 6f 6d 20 74 68 65 20 41 | 52 4d 20 70 72 6f 63 65 |om the A|RM proce|
|00003ec0| 73 73 6f 72 2e 20 46 6f | 72 20 74 68 69 73 20 72 |ssor. Fo|r this r|
|00003ed0| 65 61 73 6f 6e 2c 20 46 | 49 51 73 20 61 72 65 20 |eason, F|IQs are |
|00003ee0| 6f 6e 6c 79 20 75 73 65 | 64 20 77 68 65 6e 20 73 |only use|d when s|
|00003ef0| 70 65 65 64 20 69 73 20 | 6f 66 20 74 68 65 20 75 |peed is |of the u|
|00003f00| 74 6d 6f 73 74 20 69 6d | 70 6f 72 74 61 6e 63 65 |tmost im|portance|
|00003f10| 2e 20 46 6f 72 20 65 78 | 61 6d 70 6c 65 2c 20 66 |. For ex|ample, f|
|00003f20| 6f 72 20 64 61 74 61 20 | 74 72 61 6e 73 66 65 72 |or data |transfer|
|00003f30| 73 20 62 79 20 74 68 65 | 20 66 6c 6f 70 70 79 20 |s by the| floppy |
|00003f40| 64 69 73 63 20 63 6f 6e | 74 72 6f 6c 6c 65 72 20 |disc con|troller |
|00003f50| 61 6e 64 20 45 63 6f 6e | 65 74 20 69 6e 74 65 72 |and Econ|et inter|
|00003f60| 66 61 63 65 2e 0d 0d 09 | 57 68 65 6e 65 76 65 72 |face....|Whenever|
|00003f70| 20 61 6e 20 49 52 51 20 | 6f 72 20 46 49 51 20 6f | an IRQ |or FIQ o|
|00003f80| 63 63 75 72 73 2c 20 49 | 4f 43 20 6b 65 65 70 73 |ccurs, I|OC keeps|
|00003f90| 20 61 20 6e 6f 74 65 20 | 6f 66 20 74 68 65 20 73 | a note |of the s|
|00003fa0| 6f 75 72 63 65 20 6f 66 | 20 74 68 65 20 69 6e 74 |ource of| the int|
|00003fb0| 65 72 72 75 70 74 2e 20 | 57 68 65 6e 20 74 68 65 |errupt. |When the|
|00003fc0| 20 41 52 4d 20 70 72 6f | 63 65 73 73 6f 72 20 72 | ARM pro|cessor r|
|00003fd0| 65 73 70 6f 6e 64 73 20 | 74 6f 20 74 68 65 20 69 |esponds |to the i|
|00003fe0| 6e 74 65 72 72 75 70 74 | 2c 20 52 49 53 43 20 4f |nterrupt|, RISC O|
|00003ff0| 53 20 63 61 6e 20 69 6e | 74 65 72 72 6f 67 61 74 |S can in|terrogat|
|00004000| 65 20 49 4f 43 20 74 6f | 20 66 69 6e 64 20 6f 75 |e IOC to| find ou|
|00004010| 74 20 74 68 65 20 73 6f | 75 72 63 65 20 61 6e 64 |t the so|urce and|
|00004020| 20 61 63 74 20 61 63 63 | 6f 72 64 69 6e 67 6c 79 | act acc|ordingly|
|00004030| 2e 0d 0d 54 49 4d 45 52 | 53 0d 09 43 6f 6e 74 61 |...TIMER|S..Conta|
|00004040| 69 6e 65 64 20 77 69 74 | 68 69 6e 20 49 4f 43 20 |ined wit|hin IOC |
|00004050| 69 74 73 65 6c 66 20 61 | 72 65 20 66 6f 75 72 20 |itself a|re four |
|00004060| 74 69 6d 65 72 73 2c 20 | 77 68 69 63 68 20 61 72 |timers, |which ar|
|00004070| 65 20 62 61 73 69 63 61 | 6c 6c 79 20 63 6f 75 6e |e basica|lly coun|
|00004080| 74 65 72 73 20 74 68 61 | 74 20 63 61 6e 20 62 65 |ters tha|t can be|
|00004090| 20 6c 6f 61 64 65 64 20 | 77 69 74 68 20 61 20 70 | loaded |with a p|
|000040a0| 61 72 74 69 63 75 6c 61 | 72 20 76 61 6c 75 65 2c |articula|r value,|
|000040b0| 20 61 6e 64 20 74 68 65 | 6e 20 64 65 63 72 65 6d | and the|n decrem|
|000040c0| 65 6e 74 65 64 20 61 74 | 20 61 20 63 6f 6e 73 74 |ented at| a const|
|000040d0| 61 6e 74 20 72 61 74 65 | 2e 20 45 61 63 68 20 74 |ant rate|. Each t|
|000040e0| 69 6d 65 20 61 20 74 69 | 6d 65 72 20 69 73 20 64 |ime a ti|mer is d|
|000040f0| 65 63 72 65 6d 65 6e 74 | 65 64 20 74 68 72 6f 75 |ecrement|ed throu|
|00004100| 67 68 20 7a 65 72 6f 2c | 20 69 74 20 67 65 6e 65 |gh zero,| it gene|
|00004110| 72 61 74 65 73 20 61 6e | 20 69 6e 74 65 72 72 75 |rates an| interru|
|00004120| 70 74 2e 20 4f 66 20 74 | 68 65 73 65 20 74 69 6d |pt. Of t|hese tim|
|00004130| 65 72 73 2c 20 74 77 6f | 20 68 61 76 65 20 64 65 |ers, two| have de|
|00004140| 64 69 63 61 74 65 64 20 | 68 61 72 64 77 61 72 65 |dicated |hardware|
|00004150| 20 75 73 65 73 20 2d 20 | 6f 6e 65 20 67 65 6e 65 | uses - |one gene|
|00004160| 72 61 74 65 73 20 74 68 | 65 20 62 61 75 64 20 72 |rates th|e baud r|
|00004170| 61 74 65 20 63 6c 6f 63 | 6b 20 66 6f 72 20 74 68 |ate cloc|k for th|
|00004180| 65 20 73 65 72 69 61 6c | 20 6c 69 6e 6b 20 74 6f |e serial| link to|
|00004190| 20 74 68 65 20 6b 65 79 | 62 6f 61 72 64 2c 20 61 | the key|board, a|
|000041a0| 6e 64 20 74 68 65 20 73 | 65 63 6f 6e 64 20 69 73 |nd the s|econd is|
|000041b0| 20 75 73 65 64 20 74 6f | 20 67 65 6e 65 72 61 74 | used to| generat|
|000041c0| 65 20 74 68 65 20 72 65 | 63 65 69 76 65 20 62 61 |e the re|ceive ba|
|000041d0| 75 64 20 72 61 74 65 20 | 66 6f 72 20 74 68 65 20 |ud rate |for the |
|000041e0| 73 65 72 69 61 6c 20 70 | 6f 72 74 20 77 68 65 6e |serial p|ort when|
|000041f0| 20 75 73 69 6e 67 20 73 | 70 6c 69 74 20 73 70 65 | using s|plit spe|
|00004200| 65 64 73 2e 20 54 68 69 | 73 20 69 73 20 6e 65 63 |eds. Thi|s is nec|
|00004210| 65 73 73 61 72 79 20 61 | 73 20 74 68 65 20 73 65 |essary a|s the se|
|00004220| 72 69 61 6c 20 69 6e 74 | 65 72 66 61 63 65 20 63 |rial int|erface c|
|00004230| 68 69 70 20 63 61 6e 20 | 6f 6e 6c 79 20 67 65 6e |hip can |only gen|
|00004240| 65 72 61 74 65 20 61 20 | 73 69 6e 67 6c 65 20 62 |erate a |single b|
|00004250| 61 75 64 20 72 61 74 65 | 20 69 6e 74 65 72 6e 61 |aud rate| interna|
|00004260| 6c 6c 79 2e 20 41 20 74 | 68 69 72 64 20 74 69 6d |lly. A t|hird tim|
|00004270| 65 72 20 69 73 20 75 73 | 65 64 20 62 79 20 52 49 |er is us|ed by RI|
|00004280| 53 43 20 4f 53 20 74 6f | 20 67 65 6e 65 72 61 74 |SC OS to| generat|
|00004290| 65 20 61 6e 20 69 6e 74 | 65 72 72 75 70 74 20 65 |e an int|errupt e|
|000042a0| 76 65 72 79 20 68 75 6e | 64 72 65 64 74 68 20 6f |very hun|dredth o|
|000042b0| 66 20 61 20 73 65 63 6f | 6e 64 2e 20 54 68 69 73 |f a seco|nd. This|
|000042c0| 20 69 73 20 75 73 65 64 | 20 74 6f 20 63 6f 6e 74 | is used| to cont|
|000042d0| 72 6f 6c 20 74 61 73 6b | 73 20 73 75 63 68 20 61 |rol task|s such a|
|000042e0| 73 20 6b 65 79 62 6f 61 | 72 64 20 61 75 74 6f 2d |s keyboa|rd auto-|
|000042f0| 72 65 70 65 61 74 2c 20 | 61 73 20 77 65 6c 6c 20 |repeat, |as well |
|00004300| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00004310| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00004320| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00004330| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|00004340| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00004350| ff ff 00 0b 00 01 00 01 | 00 00 00 00 00 00 00 00 |........|........|
|00004360| 00 00 00 00 00 01 00 01 | 00 00 00 00 00 00 00 00 |........|........|
|00004370| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|00004380| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|00004390| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000043a0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000043b0| ff ff 00 20 ff ff ff ff | 00 20 ff ff ff ff 00 20 |... ....|. ..... |
|000043c0| ff ff ff ff 00 20 ff ff | ff ff 00 20 ff ff ff ff |..... ..|... ....|
|000043d0| 00 20 ff ff ff ff 00 20 | ff ff ff ff 00 20 ff ff |. ..... |..... ..|
|000043e0| ff ff 00 20 ff ff ff ff | 00 00 00 00 00 01 ff 00 |... ....|........|
|000043f0| 00 04 00 00 00 00 00 01 | 03 00 00 0b 80 00 00 7f |........|........|
|00004400| 73 70 65 63 69 61 6c 69 | 73 65 64 20 62 75 73 20 |speciali|sed bus |
|00004410| 74 68 61 74 20 77 61 73 | 20 64 65 76 65 6c 6f 70 |that was| develop|
|00004420| 65 64 20 62 79 20 50 68 | 69 6c 69 70 73 2c 20 61 |ed by Ph|ilips, a|
|00004430| 6e 64 20 69 73 20 75 6e | 75 73 75 61 6c 20 69 6e |nd is un|usual in|
|00004440| 20 74 68 61 74 20 69 74 | 20 69 73 20 61 20 73 65 | that it| is a se|
|00004450| 72 69 61 6c 20 62 75 73 | 2e 20 54 68 69 73 20 6d |rial bus|. This m|
|00004460| 65 61 6e 73 20 74 68 61 | 74 20 64 61 74 61 20 69 |eans tha|t data i|
|00004470| 73 20 74 72 61 6e 73 66 | 65 72 72 65 64 20 62 69 |s transf|erred bi|
|00004480| 74 20 62 79 20 62 69 74 | 2c 20 72 61 74 68 65 72 |t by bit|, rather|
|00004490| 20 74 68 61 6e 20 62 79 | 74 65 20 62 79 20 62 79 | than by|te by by|
|000044a0| 74 65 20 6f 72 20 77 6f | 72 64 20 62 79 20 77 6f |te or wo|rd by wo|
|000044b0| 72 64 2c 20 74 68 65 72 | 65 66 6f 72 65 20 6d 61 |rd, ther|efore ma|
|000044c0| 6b 69 6e 67 20 74 68 65 | 20 62 75 73 20 72 65 6c |king the| bus rel|
|000044d0| 61 74 69 76 65 6c 79 20 | 73 6c 6f 77 2e 20 48 6f |atively |slow. Ho|
|000044e0| 77 65 76 65 72 2c 20 74 | 68 65 20 49 49 43 20 62 |wever, t|he IIC b|
|000044f0| 75 73 20 68 61 73 20 74 | 68 65 20 61 64 76 61 6e |us has t|he advan|
|00004500| 74 61 67 65 20 74 68 61 | 74 20 66 61 72 20 66 65 |tage tha|t far fe|
|00004510| 77 65 72 20 6c 69 6e 65 | 73 20 61 72 65 20 6e 65 |wer line|s are ne|
|00004520| 65 64 65 64 2e 20 49 6e | 20 66 61 63 74 2c 20 6f |eded. In| fact, o|
|00004530| 6e 6c 79 20 74 77 6f 20 | 63 6f 6e 6e 65 63 74 69 |nly two |connecti|
|00004540| 6f 6e 73 20 61 72 65 20 | 75 73 65 64 20 2d 20 74 |ons are |used - t|
|00004550| 68 65 20 73 65 72 69 61 | 6c 20 64 61 74 61 20 69 |he seria|l data i|
|00004560| 74 73 65 6c 66 20 28 6c | 61 62 65 6c 6c 65 64 20 |tself (l|abelled |
|00004570| 53 44 41 29 20 61 6e 64 | 20 61 20 63 6c 6f 63 6b |SDA) and| a clock|
|00004580| 20 74 6f 20 73 79 6e 63 | 68 72 6f 6e 69 73 65 20 | to sync|hronise |
|00004590| 74 68 65 20 74 72 61 6e | 73 66 65 72 73 20 28 53 |the tran|sfers (S|
|000045a0| 43 4c 29 2e 20 54 68 65 | 73 65 20 6c 69 6e 65 73 |CL). The|se lines|
|000045b0| 20 61 72 65 20 63 6f 6e | 6e 65 63 74 65 64 20 74 | are con|nected t|
|000045c0| 6f 20 74 77 6f 20 62 69 | 74 73 20 6f 66 20 74 68 |o two bi|ts of th|
|000045d0| 65 20 67 65 6e 65 72 61 | 6c 20 70 75 72 70 6f 73 |e genera|l purpos|
|000045e0| 65 20 70 6f 72 74 20 6f | 6e 20 49 4f 43 2e 0d 0d |e port o|n IOC...|
|000045f0| 09 42 65 63 61 75 73 65 | 20 6f 66 20 69 74 73 20 |.Because| of its |
|00004600| 6c 61 63 6b 20 6f 66 20 | 73 70 65 65 64 2c 20 74 |lack of |speed, t|
|00004610| 68 65 20 49 49 43 20 62 | 75 73 20 68 61 73 20 6c |he IIC b|us has l|
|00004620| 69 6d 69 74 65 64 20 75 | 73 65 2c 20 61 6e 64 20 |imited u|se, and |
|00004630| 69 73 20 6f 6e 6c 79 20 | 75 73 65 64 20 74 6f 20 |is only |used to |
|00004640| 63 6f 6d 6d 75 6e 69 63 | 61 74 65 20 77 69 74 68 |communic|ate with|
|00004650| 20 74 68 65 20 72 65 61 | 6c 2d 74 69 6d 65 20 63 | the rea|l-time c|
|00004660| 6c 6f 63 6b 20 61 6e 64 | 20 43 4d 4f 53 20 52 41 |lock and| CMOS RA|
|00004670| 4d 20 63 68 69 70 2e 20 | 48 6f 77 65 76 65 72 2c |M chip. |However,|
|00004680| 20 74 68 65 20 53 44 41 | 20 61 6e 64 20 53 43 4c | the SDA| and SCL|
|00004690| 20 73 69 67 6e 61 6c 73 | 20 61 72 65 20 61 6c 73 | signals| are als|
|000046a0| 6f 20 6d 61 64 65 20 61 | 76 61 69 6c 61 62 6c 65 |o made a|vailable|
|000046b0| 20 74 6f 20 70 6f 64 75 | 6c 65 73 2c 20 61 6e 64 | to podu|les, and|
|000046c0| 20 63 61 6e 20 62 65 20 | 75 73 65 64 20 62 79 20 | can be |used by |
|000046d0| 74 68 65 6d 2e 20 49 74 | 20 69 73 20 61 6c 73 6f |them. It| is also|
|000046e0| 20 72 65 6c 61 74 69 76 | 65 6c 79 20 63 6f 6d 70 | relativ|ely comp|
|000046f0| 6c 69 63 61 74 65 64 20 | 74 6f 20 63 6f 6e 74 72 |licated |to contr|
|00004700| 6f 6c 20 74 68 65 20 20 | 62 75 73 2c 20 62 65 63 |ol the |bus, bec|
|00004710| 61 75 73 65 20 6f 66 20 | 74 68 65 20 63 6f 6d 70 |ause of |the comp|
|00004720| 6c 65 78 20 74 69 6d 69 | 6e 67 73 20 6e 65 65 64 |lex timi|ngs need|
|00004730| 65 64 20 62 65 74 77 65 | 65 6e 20 74 68 65 20 74 |ed betwe|en the t|
|00004740| 77 6f 20 73 69 67 6e 61 | 6c 73 2e 20 4c 75 63 6b |wo signa|ls. Luck|
|00004750| 69 6c 79 2c 20 74 68 6f | 75 67 68 2c 20 52 49 53 |ily, tho|ugh, RIS|
|00004760| 43 20 4f 53 20 70 72 6f | 76 69 64 65 73 20 74 68 |C OS pro|vides th|
|00004770| 65 20 53 57 49 20 63 61 | 6c 6c 20 d2 49 49 43 5f |e SWI ca|ll .IIC_|
|00004780| 43 6f 6e 74 72 6f 6c d3 | 20 74 6f 20 64 6f 20 74 |Control.| to do t|
|00004790| 68 65 20 6a 6f 62 20 66 | 6f 72 20 79 6f 75 2e 0d |he job f|or you..|
|000047a0| 0d 09 54 68 61 74 20 62 | 72 69 6e 67 73 20 75 73 |..That b|rings us|
|000047b0| 20 74 6f 20 74 68 65 20 | 65 6e 64 20 6f 66 20 74 | to the |end of t|
|000047c0| 68 69 73 20 73 65 72 69 | 65 73 2c 20 61 6e 64 20 |his seri|es, and |
|000047d0| 49 20 68 6f 70 65 20 74 | 68 61 74 20 69 74 20 68 |I hope t|hat it h|
|000047e0| 61 73 20 62 65 65 6e 20 | 69 6e 74 65 72 65 73 74 |as been |interest|
|000047f0| 69 6e 67 2e 20 55 6e 66 | 6f 72 74 75 6e 61 74 65 |ing. Unf|ortunate|
|00004800| 55 6e 64 65 72 20 74 68 | 65 20 4c 69 64 20 09 09 |Under th|e Lid ..|
|00004810| 09 09 09 09 20 50 61 72 | 74 20 34 0d 00 00 00 00 |.... Par|t 4.....|
|00004820| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004830| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004840| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004850| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004860| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004870| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004880| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004890| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000048a0| 00 00 00 00 00 00 00 78 | 00 00 f8 f4 00 0a 00 00 |.......x|........|
|000048b0| 00 00 02 d0 02 40 00 6d | 00 00 00 14 00 00 f6 6c |.....@.m|.......l|
|000048c0| 00 0a ff 80 ff 95 02 50 | 01 d5 00 00 00 00 00 20 |.......P|....... |
|000048d0| 00 00 f6 cc 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000048e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 24 |........|.......$|
|000048f0| 00 00 f7 08 00 01 00 2c | b0 04 00 2c ad 18 00 2c |.......,|...,...,|
|00004900| 61 73 20 75 70 64 61 74 | 69 6e 67 20 74 68 65 20 |as updat|ing the |
|00004910| 76 61 6c 75 65 20 6f 66 | 20 74 68 65 20 70 73 65 |value of| the pse|
|00004920| 75 64 6f 2d 76 61 72 69 | 61 62 6c 65 20 54 49 4d |udo-vari|able TIM|
|00004930| 45 2e 20 54 68 65 20 66 | 69 6e 61 6c 20 74 69 6d |E. The f|inal tim|
|00004940| 65 72 20 69 73 20 66 72 | 65 65 20 66 6f 72 20 74 |er is fr|ee for t|
|00004950| 68 65 20 75 73 65 72 d5 | 73 20 6f 77 6e 20 70 72 |he user.|s own pr|
|00004960| 6f 67 72 61 6d 2e 0d 0d | 54 48 45 20 49 49 43 20 |ogram...|THE IIC |
|00004970| 42 55 53 0d 09 41 20 66 | 69 6e 61 6c 20 6d 65 74 |BUS..A f|inal met|
|00004980| 68 6f 64 20 6f 66 20 61 | 63 63 65 73 73 69 6e 67 |hod of a|ccessing|
|00004990| 20 70 65 72 69 70 68 65 | 72 61 6c 20 64 65 76 69 | periphe|ral devi|
|000049a0| 63 65 73 20 65 6d 70 6c | 6f 79 65 64 20 6f 6e 20 |ces empl|oyed on |
|000049b0| 74 68 65 20 41 72 63 68 | 69 6d 65 64 65 73 20 69 |the Arch|imedes i|
|000049c0| 73 20 61 20 73 79 73 74 | 65 6d 20 6b 6e 6f 77 6e |s a syst|em known|
|000049d0| 20 61 73 20 74 68 65 20 | 49 49 43 20 62 75 73 20 | as the |IIC bus |
|000049e0| 28 72 65 61 64 20 22 49 | 20 73 71 75 61 72 65 64 |(read "I| squared|
|000049f0| 20 43 22 29 2e 20 54 68 | 69 73 20 69 73 20 61 20 | C"). Th|is is a |
|00004a00| 00 cb 00 06 00 00 02 0c | 00 08 00 00 00 12 00 06 |........|........|
|00004a10| 00 00 02 26 00 0d 00 00 | 00 01 00 1b 00 00 00 65 |...&....|.......e|
|00004a20| 00 0d 00 00 00 01 00 1c | 00 00 00 23 00 1b 00 00 |........|...#....|
|00004a30| 00 29 00 0d 00 00 01 08 | 00 1e 00 00 00 01 00 1d |.)......|........|
|00004a40| 00 00 00 01 00 06 00 00 | 00 05 00 0b 00 00 00 12 |........|........|
|00004a50| 00 06 00 00 00 31 00 0b | 00 00 00 08 00 06 00 00 |.....1..|........|
|00004a60| 00 01 00 0b 00 00 00 09 | 00 06 00 00 01 f7 00 20 |........|....... |
|00004a70| 00 00 00 01 00 23 00 00 | 00 2c 00 0a 00 00 00 05 |.....#..|.,......|
|00004a80| 00 23 00 00 02 42 00 06 | 00 00 00 01 00 23 00 00 |.#...B..|.....#..|
|00004a90| 01 34 00 06 00 00 00 01 | 00 08 00 00 00 0b 00 21 |.4......|.......!|
|00004aa0| 00 00 01 56 00 22 00 00 | 00 09 00 21 00 00 02 28 |...V."..|...!...(|
|00004ab0| 00 06 00 00 00 fa 00 0d | 00 00 01 4d 00 06 00 00 |........|...M....|
|00004ac0| 00 cc 00 1e 00 00 00 01 | 00 08 00 00 00 07 00 0d |........|........|
|00004ad0| 00 00 03 2d 00 06 00 00 | 00 01 00 08 00 00 00 0c |...-....|........|
|00004ae0| 00 23 00 00 02 7b 00 0c | 00 00 00 01 00 0d 00 00 |.#...{..|........|
|00004af0| 01 b0 00 06 00 00 00 01 | 00 0b 00 00 01 09 00 57 |........|.......W|
|00004b00| 00 00 00 22 00 00 00 04 | 00 6c 00 22 00 00 00 06 |..."....|.l."....|
|00004b10| 00 01 00 00 00 22 00 00 | 00 06 00 01 00 00 00 22 |....."..|......."|
|00004b20| 00 00 00 00 78 63 68 20 | 6d 6f 76 65 74 6f 0d 20 |....xch |moveto. |
|00004b30| 20 36 20 2d 31 20 72 6f | 6c 6c 20 6c 69 6e 65 74 | 6 -1 ro|ll linet|
|00004b40| 6f 20 6c 69 6e 65 74 6f | 20 6c 69 6e 65 74 6f 20 |o lineto| lineto |
|00004b50| 63 6c 6f 73 65 70 61 74 | 68 7b 7d 7b 6d 6f 76 65 |closepat|h{}{move|
|00004b60| 74 6f 7d 69 66 65 6c 73 | 65 7d 62 64 66 0d 2f 78 |to}ifels|e}bdf./x|
|00004b70| 70 72 73 70 6f 6c 79 7b | 6d 6f 76 65 74 6f 7b 63 |prspoly{|moveto{c|
|00004b80| 75 72 72 65 6e 74 66 69 | 6c 65 20 78 70 72 73 73 |urrentfi|le xprss|
|00004b90| 74 72 20 72 65 61 64 6c | 69 6e 65 20 70 6f 70 20 |tr readl|ine pop |
|00004ba0| 63 76 72 20 64 75 70 20 | 2d 33 32 37 36 37 20 65 |cvr dup |-32767 e|
|00004bb0| 71 7b 70 6f 70 20 65 78 | 69 74 7d 0d 20 20 7b 63 |q{pop ex|it}. {c|
|00004bc0| 75 72 72 65 6e 74 66 69 | 6c 65 20 78 70 72 73 73 |urrentfi|le xprss|
|00004bd0| 74 72 20 72 65 61 64 6c | 69 6e 65 20 70 6f 70 20 |tr readl|ine pop |
|00004be0| 63 76 72 20 6c 69 6e 65 | 74 6f 7d 69 66 65 6c 73 |cvr line|to}ifels|
|00004bf0| 65 7d 6c 6f 6f 70 7d 62 | 64 66 0d 2f 78 70 00 00 |e}loop}b|df./xp..|
|00004c00| 6f 75 72 20 63 68 75 6e | 6b 73 20 77 68 69 63 68 |our chun|ks which|
|00004c10| 20 61 72 65 20 69 64 65 | 6e 74 69 63 61 6c 20 65 | are ide|ntical e|
|00004c20| 78 63 65 70 74 20 66 6f | 72 20 61 63 63 65 73 73 |xcept fo|r access|
|00004c30| 20 73 70 65 65 64 20 28 | 46 61 73 74 2c 20 4d 65 | speed (|Fast, Me|
|00004c40| 64 69 75 6d 2c 20 53 6c | 6f 77 20 6f 72 20 53 79 |dium, Sl|ow or Sy|
|00004c50| 6e 63 29 2e 20 54 68 69 | 73 20 61 6c 6c 6f 77 73 |nc). Thi|s allows|
|00004c60| 20 74 68 65 20 73 70 65 | 65 64 20 6f 66 20 61 6e | the spe|ed of an|
|00004c70| 20 61 63 63 65 73 73 20 | 74 6f 20 62 65 20 64 65 | access |to be de|
|00004c80| 74 65 72 1f 6d 69 6e 65 | 64 20 62 79 20 74 68 65 |ter.mine|d by the|
|00004c90| 20 61 64 64 72 65 73 73 | 20 75 73 65 64 20 66 6f | address| used fo|
|00004ca0| 72 20 74 68 65 20 61 63 | 63 65 73 73 2e 20 45 61 |r the ac|cess. Ea|
|00004cb0| 63 68 20 63 68 75 6e 6b | 20 69 73 20 66 75 72 74 |ch chunk| is furt|
|00004cc0| 68 65 72 20 73 70 6c 69 | 74 20 69 6e 74 6f 20 65 |her spli|t into e|
|00004cd0| 69 67 68 74 20 62 6c 6f | 63 6b 73 2c 20 65 61 63 |ight blo|cks, eac|
|00004ce0| 68 20 36 34 4b 20 69 6e | 20 6c 65 6e 67 74 68 2e |h 64K in| length.|
|00004cf0| 20 54 68 65 20 66 69 72 | 73 74 20 62 6c 6f 63 6b | The fir|st block|
|00004d00| 00 00 00 0e 00 00 00 04 | 00 51 00 0e 00 00 00 06 |........|.Q......|
|00004d10| 00 09 00 00 00 0e 00 00 | 00 0c 00 0a 00 00 00 0e |........|........|
|00004d20| 00 0a 00 00 00 00 00 00 | 00 00 72 73 66 63 2f 66 |........|..rsfc/f|
|00004d30| 63 20 6c 6f 61 64 20 64 | 65 66 2f 66 63 7b 76 6d |c load d|ef/fc{vm|
|00004d40| 73 74 61 74 75 73 20 65 | 78 63 68 20 73 75 62 20 |status e|xch sub |
|00004d50| 31 30 30 30 30 20 6c 74 | 7b 78 70 72 73 66 63 7d |10000 lt|{xprsfc}|
|00004d60| 69 66 20 70 6f 70 7d 62 | 69 6e 64 20 73 74 6f 72 |if pop}b|ind stor|
|00004d70| 65 7d 69 66 0d 2f 78 70 | 72 73 6d 63 7b 30 20 33 |e}if./xp|rsmc{0 3|
|00004d80| 20 31 20 72 6f 6c 6c 20 | 74 72 61 6e 73 66 6f 72 | 1 roll |transfor|
|00004d90| 6d 20 6e 65 67 20 65 78 | 63 68 20 70 6f 70 7d 62 |m neg ex|ch pop}b|
|00004da0| 64 66 0d 2f 78 70 72 73 | 73 67 74 7b 32 20 63 6f |df./xprs|sgt{2 co|
|00004db0| 70 79 20 6b 6e 6f 77 6e | 7b 67 65 74 20 74 72 75 |py known|{get tru|
|00004dc0| 65 7d 7b 70 6f 70 20 70 | 6f 70 20 66 61 6c 73 65 |e}{pop p|op false|
|00004dd0| 7d 69 66 65 6c 73 65 7d | 62 64 66 0d 2f 78 70 72 |}ifelse}|bdf./xpr|
|00004de0| 73 6b 69 66 7b 63 75 72 | 72 65 6e 74 66 6f 6e 74 |skif{cur|rentfont|
|00004df0| 20 64 75 70 2f 46 6f 6e | 74 4d 61 74 72 69 00 00 | dup/Fon|tMatri..|
|00004e00| 53 7a 00 4f 00 7a 00 6c | 00 95 00 4f 00 95 00 6c |Sz.O.z.l|...O...l|
|00004e10| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004e20| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004e30| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004e40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004e50| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004e60| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004e70| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004e80| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004e90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ea0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004eb0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ec0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ed0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ee0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004ef0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00004f00| 20 69 73 20 75 73 65 64 | 20 74 6f 20 61 63 63 65 | is used| to acce|
|00004f10| 73 73 20 72 65 67 69 73 | 74 65 72 73 20 69 6e 74 |ss regis|ters int|
|00004f20| 65 72 6e 61 6c 20 74 6f | 20 49 4f 43 2c 20 77 68 |ernal to| IOC, wh|
|00004f30| 69 6c 65 20 74 68 65 20 | 6f 74 68 65 72 73 20 61 |ile the |others a|
|00004f40| 72 65 20 61 6c 6c 6f 63 | 61 74 65 64 20 74 6f 20 |re alloc|ated to |
|00004f50| 64 69 66 66 65 72 65 6e | 74 20 70 65 72 69 70 68 |differen|t periph|
|00004f60| 65 72 61 6c 20 63 6f 6e | 74 72 6f 6c 6c 65 72 73 |eral con|trollers|
|00004f70| 2e 20 46 69 67 75 72 65 | 20 32 20 73 75 6d 73 20 |. Figure| 2 sums |
|00004f80| 75 70 20 74 68 65 20 73 | 69 74 75 61 74 69 6f 6e |up the s|ituation|
|00004f90| 2e 0d 0d 0d 09 54 68 65 | 20 69 6e 74 65 72 6e 61 |.....The| interna|
|00004fa0| 6c 20 65 78 70 61 6e 73 | 69 6f 6e 20 61 72 65 61 |l expans|ion area|
|00004fb0| 20 69 73 20 77 68 65 72 | 65 20 73 6f 2d 63 61 6c | is wher|e so-cal|
|00004fc0| 6c 65 64 20 70 6f 64 75 | 6c 65 73 20 61 72 65 20 |led podu|les are |
|00004fd0| 6d 61 70 70 65 64 2c 20 | 61 6e 64 20 65 78 74 65 |mapped, |and exte|
|00004fe0| 72 6e 61 6c 20 65 78 70 | 61 6e 73 69 6f 6e 20 69 |rnal exp|ansion i|
|00004ff0| 73 20 61 76 61 69 6c 61 | 62 6c 65 20 66 6f 72 20 |s availa|ble for |
|00005000| 55 6e 64 65 72 20 74 68 | 65 20 4c 69 64 0d 74 6f |Under th|e Lid.to|
|00005010| 70 20 44 69 61 72 79 0d | 52 40 d1 6e 00 0c 42 2e |p Diary.|R@.n..B.|
|00005020| ff f3 4a 2e ff f3 67 08 | 30 6e 00 0c 20 08 60 02 |..J...g.|0n.. .`.|
|00005030| 70 00 4e 5e 4e 75 4e 56 | ff d2 42 6e ff fc 3d 7c |p.N^NuNV|..Bn..=||
|00005040| 40 00 ff fa 42 6e ff f8 | 3d 7c 02 00 ff f6 42 6e |@...Bn..|=|....Bn|
|00005050| ff f4 42 6e ff f2 3d 7c | 3d e0 ff f0 3d 7c 00 48 |..Bn..=||=...=|.H|
|00005060| ff ec 41 ec 04 74 2d 58 | ff e2 2d 58 ff e6 3d 58 |..A..t-X|..-X..=X|
|00005070| ff ea 48 6e ff ec 48 6e | ff e2 3f 3c 20 04 a9 eb |..Hn..Hn|..?< ...|
|00005080| 3d 7c 00 0a ff e0 48 6e | ff e0 48 6e ff e2 3f 3c |=|....Hn|..Hn..?<|
|00005090| 20 04 a9 eb 3d 7c 00 02 | ff de 48 6e ff de 48 6e | ...=|..|..Hn..Hn|
|000050a0| ff e2 3f 3c 20 04 a9 eb | 48 6e ff e2 3f 3c 00 16 |..?< ...|Hn..?<..|
|000050b0| a9 eb 48 6e ff e2 48 6e | ff ee 3f 3c 20 10 a9 eb |..Hn..Hn|..?< ...|
|000050c0| 3d 7c 05 a0 ff ec 3d 7c | 00 48 ff e8 41 ec 04 7e |=|....=||.H..A..~|
|000050d0| 2d 58 ff de 2d 58 ff e2 | 3d 58 ff e6 48 6e ff e8 |-X..-X..|=X..Hn..|
|000050e0| 48 6e ff de 3f 3c 20 04 | a9 eb 3d 7c 00 0a ff dc |Hn..?< .|..=|....|
|000050f0| 48 6e ff dc 48 6e ff de | 3f 3c 20 04 a9 eb 3d 7c |Hn..Hn..|?< ...=||
|00005100| 00 00 00 22 00 00 00 04 | 00 53 00 22 00 00 00 06 |..."....|.S."....|
|00005110| 00 01 00 00 00 22 00 00 | 00 06 00 01 00 00 00 22 |....."..|......."|
|00005120| 00 00 00 00 68 20 63 75 | 72 72 65 6e 74 6c 69 6e |....h cu|rrentlin|
|00005130| 65 77 69 64 74 68 20 32 | 2e 20 64 69 76 20 73 75 |ewidth 2|. div su|
|00005140| 62 20 6d 6f 76 65 74 6f | 20 32 20 63 6f 70 79 20 |b moveto| 2 copy |
|00005150| 72 6c 69 6e 65 74 6f 20 | 0d 20 20 63 75 72 72 65 |rlineto |. curre|
|00005160| 6e 74 70 6f 69 6e 74 20 | 63 75 72 72 65 6e 74 6c |ntpoint |currentl|
|00005170| 69 6e 65 77 69 64 74 68 | 20 61 64 64 20 78 70 72 |inewidth| add xpr|
|00005180| 73 66 61 63 65 20 35 31 | 32 20 61 6e 64 20 30 20 |sface 51|2 and 0 |
|00005190| 65 71 7b 6c 69 6e 65 74 | 6f 7d 7b 6d 6f 76 65 74 |eq{linet|o}{movet|
|000051a0| 6f 7d 69 66 65 6c 73 65 | 0d 20 20 65 78 63 68 20 |o}ifelse|. exch |
|000051b0| 6e 65 67 20 65 78 63 68 | 20 72 6c 69 6e 65 74 6f |neg exch| rlineto|
|000051c0| 20 78 70 72 73 66 61 63 | 65 20 32 35 36 20 61 6e | xprsfac|e 256 an|
|000051d0| 64 20 30 20 65 71 7b 30 | 20 63 75 72 72 65 6e 74 |d 0 eq{0| current|
|000051e0| 6c 69 6e 65 77 69 64 74 | 68 20 6e 65 67 20 72 6c |linewidt|h neg rl|
|000051f0| 69 6e 65 74 6f 7d 69 66 | 0d 20 20 78 70 72 00 00 |ineto}if|. xpr..|
|00005200| 52 49 53 43 20 55 73 65 | 72 20 4a 61 6e 75 61 72 |RISC Use|r Januar|
|00005210| 79 2f 46 65 62 72 75 61 | 72 79 20 31 39 39 30 09 |y/Februa|ry 1990.|
|00005220| 35 37 09 40 48 c0 d0 80 | d0 8e 48 78 00 14 2f 2e |57.@H...|..Hx../.|
|00005230| ff 68 2d 40 fe 4a 4e ba | d8 aa 06 80 00 00 80 00 |.h-@.JN.|........|
|00005240| 72 10 e2 a0 20 6e fe 4a | 31 40 ff 7c 08 ee 00 00 |r... n.J|1@.|....|
|00005250| ff 79 60 00 01 6c 20 2e | ff 60 b0 ae fe ca 67 00 |.y`..l .|.`....g.|
|00005260| 01 60 30 2e ff e2 5b 40 | 48 c0 d0 80 d0 8e 48 78 |.`0...[@|H.....Hx|
|00005270| 00 14 2f 2e ff 60 2d 40 | fe 4a 4e ba d8 66 06 80 |../..`-@|.JN..f..|
|00005280| 00 00 80 00 72 10 e2 a0 | 20 6e fe 4a 31 40 ff 7c |....r...| n.J1@.||
|00005290| 08 ee 00 01 ff 79 60 00 | 01 28 20 2e ff 64 b0 ae |.....y`.|.( ..d..|
|000052a0| fe ce 67 00 01 1c 30 2e | ff e2 5b 40 48 c0 d0 80 |..g...0.|..[@H...|
|000052b0| d0 8e 48 78 00 14 2f 2e | ff 64 2d 40 fe 4a 4e ba |..Hx../.|.d-@.JN.|
|000052c0| d8 22 06 80 00 00 80 00 | 72 10 e2 a0 20 6e fe 4a |."......|r... n.J|
|000052d0| 31 40 ff 7c 08 ee 00 03 | ff 79 60 00 00 e4 20 2e |1@.|....|.y`... .|
|000052e0| ff 6c b0 ae fe d6 67 00 | 00 d8 08 2e 00 00 ff 6f |.l....g.|.......o|
|000052f0| 67 14 30 2e ff e2 5b 40 | 48 c0 d0 80 d0 8e 20 40 |g.0...[@|H..... @|
|00005300| 00 00 00 0e 00 00 00 04 | 00 55 00 0e 00 00 00 06 |........|.U......|
|00005310| 00 09 00 00 00 0e 00 00 | 00 0c 00 0a 00 00 00 0e |........|........|
|00005320| 00 05 00 00 00 00 00 00 | 00 00 00 00 18 17 4c 61 |........|......La|
|00005330| 73 65 72 57 72 69 74 65 | 72 20 50 6c 75 73 20 22 |serWrite|r Plus "|
|00005340| 54 65 73 74 22 00 00 00 | 81 00 81 00 aa 00 a7 00 |Test"...|........|
|00005350| ba 00 b7 11 01 a0 00 82 | a0 00 8e 01 00 0a 00 00 |........|........|
|00005360| 00 00 02 d0 02 40 90 00 | 04 00 aa 00 a1 00 ba 00 |.....@..|........|
|00005370| b9 00 aa 00 a7 00 ba 00 | b7 00 aa 00 a7 00 ba 00 |........|........|
|00005380| b7 00 00 00 00 00 20 00 | 00 00 20 00 00 00 20 01 |...... .|.. ... .|
|00005390| ff f8 20 02 00 88 20 02 | 00 88 20 02 00 fc 20 01 |.. ... .|.. ... .|
|000053a0| ff 84 20 00 80 04 20 00 | a0 04 20 00 8a ac 20 00 |.. ... .|.. ... .|
|000053b0| ff fc 20 00 00 00 20 00 | 00 00 20 00 00 00 20 00 |.. ... .|.. ... .|
|000053c0| 00 00 20 a0 00 8f a0 00 | 83 ff 00 00 00 19 00 01 |.. .....|........|
|000053d0| 00 00 00 03 00 01 4c 57 | 52 52 0c 51 75 61 72 6b |......LW|RR.Quark|
|000053e0| 58 50 72 65 73 73 a8 00 | 00 01 00 00 00 17 e7 00 |XPress..|........|
|000053f0| 00 16 e7 00 00 00 8a 00 | 2c ae 3c 0a 4a 00 00 00 |........|,.<.J...|
|00005400| 55 6e 64 65 72 20 74 68 | 65 20 4c 69 64 0d 02 2e |Under th|e Lid...|
|00005410| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005420| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005430| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005440| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005450| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005460| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005470| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005480| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005490| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000054a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000054b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000054c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000054d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000054e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000054f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005500| 65 78 68 65 20 69 6e 74 | 65 72 6e 61 6c 20 65 78 |exhe int|ernal ex|
|00005510| 70 61 6e 73 69 6f 6e 20 | 61 72 65 61 20 69 73 20 |pansion |area is |
|00005520| 77 68 65 72 65 20 73 6f | 2d 63 61 6c 6c 65 64 20 |where so|-called |
|00005530| 70 6f 64 75 6c 65 73 20 | 61 72 65 20 6d 61 70 70 |podules |are mapp|
|00005540| 65 64 2c 20 61 6e 64 20 | 65 78 74 65 72 6e 61 6c |ed, and |external|
|00005550| 20 65 78 70 61 6e 73 69 | 6f 6e 20 69 73 20 61 76 | expansi|on is av|
|00005560| 61 69 6c 61 62 6c 65 20 | 66 6f 72 20 65 78 73 2e |ailable |for exs.|
|00005570| 20 46 69 67 75 72 65 20 | 32 20 73 75 6d 73 20 75 | Figure |2 sums u|
|00005580| 70 20 74 68 65 20 73 69 | 74 75 61 74 69 6f 6e 2e |p the si|tuation.|
|00005590| 0d 0d 09 54 68 65 20 69 | 6e 74 65 72 6e 61 6c 20 |...The i|nternal |
|000055a0| 65 78 70 61 6e 73 69 6f | 6e 20 61 72 65 61 20 69 |expansio|n area i|
|000055b0| 73 20 77 68 65 72 65 20 | 73 6f 2d 63 61 6c 6c 65 |s where |so-calle|
|000055c0| 64 20 70 6f 64 75 6c 65 | 73 20 61 72 65 20 6d 61 |d podule|s are ma|
|000055d0| 70 70 65 64 2c 20 61 6e | 64 20 65 78 74 65 72 6e |pped, an|d extern|
|000055e0| 61 6c 20 65 78 70 61 6e | 73 69 6f 6e 20 69 73 20 |al expan|sion is |
|000055f0| 61 76 61 69 6c 61 62 6c | 65 20 66 6f 72 20 65 78 |availabl|e for ex|
|00005600| 00 00 00 f6 00 0f 00 00 | 00 ec 00 0f 00 00 00 01 |........|........|
|00005610| 00 0e 00 00 00 12 00 0f | 00 00 04 8c 00 04 00 00 |........|........|
|00005620| 02 08 00 0f 00 00 00 01 | 00 0f 00 00 03 a6 00 0f |........|........|
|00005630| 00 00 00 01 00 0f 00 00 | 02 0a 00 0f 00 00 00 01 |........|........|
|00005640| 00 0e 00 00 00 12 00 0f | 00 00 02 25 00 0f 00 00 |........|...%....|
|00005650| 00 01 00 0f 00 00 01 bb | 00 0f 00 00 00 01 00 0f |........|........|
|00005660| 00 00 00 01 00 0f 00 00 | 02 51 00 0f 00 00 00 01 |........|.Q......|
|00005670| 00 0f 00 00 02 73 00 0f | 00 00 00 01 00 0f 00 00 |.....s..|........|
|00005680| 01 34 00 0f 00 00 00 01 | 00 0e 00 00 00 0b 00 0f |.4......|........|
|00005690| 00 00 03 87 00 0f 00 00 | 00 01 00 0f 00 00 00 f8 |........|........|
|000056a0| 00 0f 00 00 00 01 00 0f | 00 00 01 4d 00 0f 00 00 |........|...M....|
|000056b0| 00 01 00 0f 00 00 00 cb | 00 0f 00 00 00 01 00 0e |........|........|
|000056c0| 00 00 00 07 00 0f 00 00 | 03 2d 00 0f 00 00 00 01 |........|.-......|
|000056d0| 00 0e 00 00 00 0c 00 0f | 00 00 02 7b 00 0f 00 00 |........|...{....|
|000056e0| 00 01 00 0f 00 00 01 b0 | 00 0f 00 00 00 01 00 0f |........|........|
|000056f0| 00 00 01 09 00 0f 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005700| 00 00 00 23 00 00 00 04 | 00 59 00 23 00 00 00 06 |...#....|.Y.#....|
|00005710| 00 01 00 00 00 23 00 00 | 00 06 00 01 00 00 00 23 |.....#..|.......#|
|00005720| 00 00 00 00 c0 00 06 40 | 3f 40 3f 67 40 a1 00 c0 |.......@|?@?g@...|
|00005730| 00 01 0a a1 00 c0 00 02 | 2d 31 a1 00 c0 00 01 20 |........|-1..... |
|00005740| a1 00 c0 00 01 0a a1 00 | c0 00 0b 40 3f 40 40 40 |........|...@?@@@|
|00005750| 40 40 40 40 3f 40 a1 00 | c0 00 01 0a a1 00 c0 00 |@@@@?@..|........|
|00005760| 02 2d 31 a1 00 c0 00 01 | 20 a1 00 c0 00 01 0a a1 |.-1.....| .......|
|00005770| 00 c0 00 06 40 3f 67 40 | 3f 40 a1 00 c0 00 01 0a |....@?g@|?@......|
|00005780| a1 00 c0 00 02 2d 31 a1 | 00 c0 00 01 20 a1 00 c0 |.....-1.|.... ...|
|00005790| 00 01 0a a1 00 c0 00 0b | 40 3f 40 40 40 40 40 3f |........|@?@@@@@?|
|000057a0| 40 3f 40 a1 00 c0 00 01 | 0a a1 00 c0 00 02 2d 31 |@?@.....|......-1|
|000057b0| a1 00 c0 00 01 20 a1 00 | c0 00 01 0a a1 00 c0 00 |..... ..|........|
|000057c0| 0a 40 3f 40 3f 65 40 3f | 40 3f 40 a1 00 c0 00 01 |.@?@?e@?|@?@.....|
|000057d0| 0a a1 00 c0 00 02 2d 31 | a1 00 c0 00 01 20 a1 00 |......-1|..... ..|
|000057e0| c0 00 01 0a a1 00 c0 00 | 0b 40 3f 40 3f 40 3f 40 |........|.@?@?@?@|
|000057f0| 3f 40 3f 40 a1 00 c0 00 | 01 0a a1 00 c0 00 00 00 |?@?@....|........|
|00005800| 52 49 53 43 20 55 73 65 | 72 20 4a 61 6e 75 61 72 |RISC Use|r Januar|
|00005810| 79 2f 46 65 62 72 75 61 | 72 79 20 31 39 39 30 09 |y/Februa|ry 1990.|
|00005820| 31 32 09 ac 02 06 66 10 | 01 f6 15 ac 02 02 15 ac |12....f.|........|
|00005830| 00 00 03 e0 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005840| 00 00 30 61 00 e0 30 61 | 02 06 66 10 02 0e 7c 10 |..0a..0a|..f...|.|
|00005850| 02 14 cc 74 02 04 7c 10 | 02 10 7c 10 00 00 04 00 |...t..|.|..|.....|
|00005860| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 30 61 |........|......0a|
|00005870| 00 e3 30 61 02 14 cc 74 | 02 1c e2 74 02 23 32 d8 |..0a...t|...t.#2.|
|00005880| 02 12 e2 74 02 1e e2 74 | 00 00 04 21 00 00 00 00 |...t...t|...!....|
|00005890| 00 00 00 00 00 00 00 00 | 00 00 30 61 00 e3 30 61 |........|..0a..0a|
|000058a0| 02 23 32 d8 02 2b 48 d8 | 02 31 99 3c 02 21 48 d8 |.#2..+H.|.1.<.!H.|
|000058b0| 02 2d 48 d8 00 00 04 42 | 00 00 00 00 00 00 00 00 |.-H....B|........|
|000058c0| 00 00 00 00 00 00 30 61 | 00 af 30 61 02 31 99 3c |......0a|..0a.1.<|
|000058d0| 02 39 af 3c 02 3f ff a0 | 02 2f af 3c 02 3b af 3c |.9.<.?..|./.<.;.<|
|000058e0| 00 00 04 5b 00 00 00 00 | 00 00 00 00 00 00 00 00 |...[....|........|
|000058f0| 00 00 30 61 00 d9 30 61 | 02 3f ff a0 02 48 15 a0 |..0a..0a|.?...H..|
|00005900| 00 00 00 18 00 00 00 04 | 00 5b 00 18 00 00 00 06 |........|.[......|
|00005910| 00 05 00 00 00 18 00 00 | 00 0c 00 05 00 00 00 18 |........|........|
|00005920| 00 05 00 00 00 00 00 00 | 00 00 3f 40 3f 40 3f 40 |........|..?@?@?@|
|00005930| a1 00 c0 00 01 0a a1 00 | c0 00 02 2d 31 a1 00 c0 |........|...-1...|
|00005940| 00 01 20 a1 00 c0 00 01 | 0a a1 00 c0 00 0a 40 3f |.. .....|......@?|
|00005950| 40 3f 40 3f 65 40 3f 40 | a1 00 c0 00 01 0a a1 00 |@?@?e@?@|........|
|00005960| c0 00 02 2d 31 a1 00 c0 | 00 01 20 a1 00 c0 00 01 |...-1...|.. .....|
|00005970| 0a a1 00 c0 00 0b 40 3f | 40 3f 40 40 40 40 40 3f |......@?|@?@@@@@?|
|00005980| 40 a1 00 c0 00 01 0a a1 | 00 c0 00 02 2d 31 a1 00 |@.......|....-1..|
|00005990| c0 00 01 20 a1 00 c0 00 | 01 0a a1 00 c0 00 06 40 |... ....|.......@|
|000059a0| 3f 40 3f 67 40 a1 00 c0 | 00 01 0a a1 00 c0 00 02 |?@?g@...|........|
|000059b0| 2d 31 a1 00 c0 00 01 20 | a1 00 c0 00 01 0a a1 00 |-1..... |........|
|000059c0| c0 00 0b 40 3f 40 40 40 | 40 40 40 40 3f 40 a1 00 |...@?@@@|@@@@?@..|
|000059d0| c0 00 01 0a a1 00 c0 00 | 02 2d 31 a1 00 c0 00 01 |........|.-1.....|
|000059e0| 20 a1 00 c0 00 01 0a a1 | 00 c0 00 06 40 3f 67 40 | .......|....@?g@|
|000059f0| 3f 40 a1 00 c0 00 01 0a | a1 00 c0 00 02 2d 00 00 |?@......|.....-..|
|00005a00| 52 49 53 43 20 55 73 65 | 72 20 44 65 73 6b 74 6f |RISC Use|r Deskto|
|00005a10| 70 20 44 69 61 72 79 0d | 00 00 00 00 00 00 00 00 |p Diary.|........|
|00005a20| 00 f7 38 71 01 c9 38 71 | 00 00 00 00 00 08 16 00 |..8q..8q|........|
|00005a30| 00 0e 66 64 00 00 00 00 | 00 0a 16 00 00 00 05 86 |..fd....|........|
|00005a40| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 f7 38 71 |........|......8q|
|00005a50| 01 da 38 71 00 0e 66 64 | 00 16 7c 64 00 1c cc c8 |..8q..fd|..|d....|
|00005a60| 00 0c 7c 64 00 18 7c 64 | 00 00 05 a7 00 00 00 00 |..|d..|d|........|
|00005a70| 00 00 00 00 00 00 00 00 | 00 f7 38 71 01 bb 38 71 |........|..8q..8q|
|00005a80| 00 1c cc c8 00 24 e2 c8 | 00 2b 33 2c 00 1a e2 c8 |.....$..|.+3,....|
|00005a90| 00 26 e2 c8 00 00 05 c3 | 00 00 00 00 00 00 00 00 |.&......|........|
|00005aa0| 00 00 00 00 00 f7 38 71 | 01 c9 38 71 00 2b 33 2c |......8q|..8q.+3,|
|00005ab0| 00 33 49 2c 00 39 99 90 | 00 29 49 2c 00 35 49 2c |.3I,.9..|.)I,.5I,|
|00005ac0| 00 00 05 e1 00 10 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005ad0| 00 f7 38 71 01 1e 38 71 | 00 39 99 90 00 41 af 90 |..8q..8q|.9...A..|
|00005ae0| 00 47 ff f4 00 37 af 90 | 00 43 af 90 00 00 05 e7 |.G...7..|.C......|
|00005af0| 00 10 00 00 00 00 00 00 | 00 00 00 00 00 f7 38 71 |........|......8q|
|00005b00| 00 00 00 02 00 00 00 04 | 00 5d 00 02 00 00 00 06 |........|.]......|
|00005b10| 00 04 00 00 00 02 00 00 | 00 06 00 03 00 00 00 02 |........|........|
|00005b20| 00 00 00 00 72 65 20 2f | 72 6f 74 20 65 78 63 68 |....re /|rot exch|
|00005b30| 20 73 74 6f 72 65 20 2f | 66 72 65 71 20 65 78 63 | store /|freq exc|
|00005b40| 68 20 73 74 6f 72 65 a1 | 00 c0 00 20 20 66 72 65 |h store.|... fre|
|00005b50| 71 20 72 6f 74 20 2f 73 | 70 66 20 6c 6f 61 64 20 |q rot /s|pf load |
|00005b60| 73 65 74 73 63 72 65 65 | 6e 20 62 6e a1 00 c0 00 |setscree|n bn....|
|00005b70| 01 0d a1 00 c0 00 02 36 | 30 a1 00 c0 00 01 20 a1 |.......6|0..... .|
|00005b80| 00 c0 00 02 34 35 a1 00 | c0 00 01 20 a1 00 c0 00 |....45..|... ....|
|00005b90| 08 78 70 72 73 73 70 6f | 74 a1 00 c0 00 01 30 a1 |.xprsspo|t.....0.|
|00005ba0| 00 c0 00 01 20 a1 00 c0 | 00 09 73 65 74 73 63 72 |.... ...|..setscr|
|00005bb0| 65 65 6e a1 00 c0 00 01 | 0d a0 00 c4 a0 00 c2 a0 |een.....|........|
|00005bc0| 00 bf a1 00 c0 00 0b 78 | 70 72 73 72 65 73 74 6f |.......x|prsresto|
|00005bd0| 72 65 a1 00 c0 00 01 0d | a1 00 c0 00 01 30 a1 00 |re......|.....0..|
|00005be0| c0 00 01 20 a1 00 c0 00 | 07 73 65 74 67 72 61 79 |... ....|.setgray|
|00005bf0| a1 00 c0 00 01 0d a1 00 | c0 00 08 78 70 72 00 00 |........|...xpr..|
|00005c00| 52 55 00 00 00 00 00 00 | 00 00 00 00 00 f7 38 71 |RU......|......8q|
|00005c10| 01 98 38 71 01 03 33 08 | 01 0b 49 08 01 11 99 6c |..8q..3.|..I....l|
|00005c20| 01 01 49 08 01 0d 49 08 | 00 00 07 6a 00 00 00 00 |..I...I.|...j....|
|00005c30| 00 00 00 00 00 00 00 00 | 00 f7 38 71 01 da 38 71 |........|..8q..8q|
|00005c40| 01 11 99 6c 01 19 af 6c | 01 1f ff d0 01 0f af 6c |...l...l|.......l|
|00005c50| 01 1b af 6c 00 00 07 8b | 00 10 00 00 00 00 00 00 |...l....|........|
|00005c60| 00 00 00 00 00 f7 38 71 | 01 95 38 71 01 1f ff d0 |......8q|..8q....|
|00005c70| 01 28 15 d0 01 2e 66 34 | 01 1e 15 d0 01 2a 15 d0 |.(....f4|.....*..|
|00005c80| 00 00 07 a2 00 10 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00005c90| 00 f7 38 71 00 fb 38 71 | 01 2e 66 34 01 36 7c 34 |..8q..8q|..f4.6|4|
|00005ca0| 01 3c cc 98 01 2c 7c 34 | 01 38 7c 34 00 00 07 a3 |.<...,|4|.8|4....|
|00005cb0| 01 00 00 00 00 00 00 00 | 00 00 00 00 00 f7 38 71 |........|......8q|
|00005cc0| 01 cd 08 08 01 3c cc 98 | 01 44 e2 98 01 4b 32 fc |.....<..|.D...K2.|
|00005cd0| 01 3a e2 98 01 46 e2 98 | 00 00 07 c0 00 00 00 00 |.:...F..|........|
|00005ce0| 00 00 00 00 00 00 00 00 | 00 f7 38 71 01 d0 38 71 |........|..8q..8q|
|00005cf0| 01 4b 32 fc 01 53 48 fc | 01 59 99 60 01 49 48 fc |.K2..SH.|.Y.`.IH.|
|00005d00| 6c 79 2c 20 69 74 20 69 | 73 20 73 75 63 68 20 61 |ly, it i|s such a|
|00005d10| 20 76 61 73 74 20 73 75 | 62 6a 65 63 74 20 74 68 | vast su|bject th|
|00005d20| 61 74 20 77 65 20 68 61 | 76 65 20 6f 6e 6c 79 20 |at we ha|ve only |
|00005d30| 62 65 65 6e 20 61 62 6c | 65 20 74 6f 20 73 63 72 |been abl|e to scr|
|00005d40| 61 74 63 68 20 74 68 65 | 20 73 75 72 66 61 63 65 |atch the| surface|
|00005d50| 2c 20 62 75 74 20 49 20 | 68 6f 70 65 20 74 68 61 |, but I |hope tha|
|00005d60| 74 20 69 74 20 68 61 73 | 20 70 72 6f 76 69 64 65 |t it has| provide|
|00005d70| 64 20 61 6e 20 6f 76 65 | 72 76 69 65 77 20 6f 66 |d an ove|rview of|
|00005d80| 20 77 68 61 74 20 69 73 | 20 68 61 70 70 65 6e 69 | what is| happeni|
|00005d90| 6e 67 20 77 69 74 68 69 | 6e 20 74 68 65 20 41 72 |ng withi|n the Ar|
|00005da0| 63 68 69 6d 65 64 65 73 | 2e 0d 0d 0d 2e f0 d0 00 |chimedes|........|
|00005db0| 00 06 00 00 0c 00 00 16 | 00 00 01 14 00 2b b8 90 |........|.....+..|
|00005dc0| 09 54 68 61 74 20 62 72 | 69 6e 67 73 20 75 73 20 |.That br|ings us |
|00005dd0| 74 6f 20 74 68 65 20 65 | 6e 64 20 6f 66 20 74 68 |to the e|nd of th|
|00005de0| 69 73 20 73 65 72 69 65 | 73 2c 20 61 6e 64 20 49 |is serie|s, and I|
|00005df0| 20 68 6f 70 65 20 74 68 | 61 74 20 69 74 20 68 61 | hope th|at it ha|
|00005e00| 00 00 00 48 00 00 00 04 | 00 6e 00 48 00 00 00 06 |...H....|.n.H....|
|00005e10| 00 12 00 00 00 48 00 00 | 00 06 00 0c 00 00 00 48 |.....H..|.......H|
|00005e20| 00 00 00 00 00 00 00 00 | 00 00 00 00 ff 00 00 00 |........|........|
|00005e30| 00 00 00 00 00 00 00 00 | 00 00 00 00 02 00 00 00 |........|........|
|00005e40| 00 00 01 ff 00 00 04 00 | 00 00 00 00 01 03 00 00 |........|........|
|00005e50| 1c 00 00 00 60 00 6d 00 | 78 02 2e e0 c2 84 b4 b9 |....`.m.|x.......|
|00005e60| ca 17 2f 00 00 00 20 00 | 30 d7 d8 00 00 00 00 00 |../... .|0.......|
|00005e70| 2c b0 e8 00 01 00 00 80 | 00 64 01 80 01 00 13 d7 |,.......|.d......|
|00005e80| af 00 01 00 00 00 00 00 | 00 00 00 00 00 ff 00 00 |........|........|
|00005e90| 00 00 03 00 00 08 80 00 | 03 1d 00 28 03 32 02 2f |........|...(.2./|
|00005ea0| 09 12 2f 5f e0 c1 82 04 | 00 00 00 20 00 30 d8 30 |../_....|... .0.0|
|00005eb0| 00 00 00 00 00 2c b1 60 | 00 01 00 00 80 00 64 01 |.....,.`|......d.|
|00005ec0| 80 01 00 13 d7 af 00 01 | 00 00 00 00 00 00 00 00 |........|........|
|00005ed0| 00 00 ff 00 00 00 00 01 | 01 00 00 80 00 03 16 00 |........|........|
|00005ee0| 22 03 19 02 36 dd bb 84 | 08 dd bb 98 30 00 30 d7 |"...6...|....0.0.|
|00005ef0| 3c 00 30 d8 78 00 00 00 | 00 00 2c b0 00 64 00 00 |<.0.x...|..,..d..|
|00005f00| 6f 76 65 72 63 6f 6d 65 | 20 74 68 69 73 20 70 72 |overcome| this pr|
|00005f10| 6f 62 6c 65 6d 2c 20 61 | 20 73 79 73 74 65 6d 20 |oblem, a| system |
|00005f20| 68 61 73 20 74 6f 20 62 | 65 20 61 64 6f 70 74 65 |has to b|e adopte|
|00005f30| 64 20 62 79 20 77 68 69 | 63 68 20 74 68 65 20 6f |d by whi|ch the o|
|00005f40| 70 65 72 61 74 69 6f 6e | 20 6f 66 20 74 68 65 20 |peration| of the |
|00005f50| 41 52 4d 20 69 73 20 66 | 72 6f 7a 65 6e 20 65 61 |ARM is f|rozen ea|
|00005f60| 63 68 20 74 69 6d 65 20 | 61 6e 20 49 4f 20 61 63 |ch time |an IO ac|
|00005f70| 63 65 73 73 20 69 73 20 | 6d 61 64 65 20 28 62 79 |cess is |made (by|
|00005f80| 20 68 6f 6c 64 69 6e 67 | 20 74 68 65 20 bf 32 20 | holding| the .2 |
|00005f90| 63 6c 6f 63 6b 20 68 69 | 67 68 29 2c 20 75 6e 74 |clock hi|gh), unt|
|00005fa0| 69 6c 20 74 68 65 20 70 | 65 72 69 70 68 65 72 61 |il the p|eriphera|
|00005fb0| 6c 20 64 65 76 69 63 65 | 20 73 69 67 6e 61 6c 73 |l device| signals|
|00005fc0| 20 74 68 61 74 20 69 74 | 20 68 61 73 20 63 6f 6d | that it| has com|
|00005fd0| 70 6c 65 74 65 64 20 74 | 68 65 20 61 63 63 65 73 |pleted t|he acces|
|00005fe0| 73 2e 0d 09 41 20 66 75 | 72 74 68 65 72 20 74 77 |s...A fu|rther tw|
|00005ff0| 69 73 74 20 74 6f 20 74 | 68 65 20 73 74 6f 72 72 |ist to t|he storr|
|00006000| 69 73 20 6d 65 74 68 6f | 64 20 69 73 20 63 6f 6d |is metho|d is com|
|00006010| 70 61 74 69 62 6c 65 20 | 77 69 74 68 20 6d 61 6e |patible |with man|
|00006020| 79 20 70 65 72 69 70 68 | 65 72 61 6c 20 63 6f 6e |y periph|eral con|
|00006030| 74 72 6f 6c 6c 65 72 20 | 63 68 69 70 73 20 64 65 |troller |chips de|
|00006040| 73 69 67 6e 65 64 20 66 | 6f 72 20 63 6f 6e 6e 65 |signed f|or conne|
|00006050| 63 74 69 6e 67 20 74 6f | 20 74 68 65 20 36 35 30 |cting to| the 650|
|00006060| 32 20 6d 69 63 72 6f 2d | 70 72 6f 63 65 73 73 6f |2 micro-|processo|
|00006070| 72 20 75 73 65 64 20 69 | 6e 20 65 61 72 6c 69 65 |r used i|n earlie|
|00006080| 72 20 41 63 6f 72 6e 20 | 63 6f 6d 70 75 74 65 72 |r Acorn |computer|
|00006090| 73 2e 0d 0d 09 49 4f 43 | 20 61 6c 73 6f 20 70 72 |s....IOC| also pr|
|000060a0| 6f 76 69 64 65 73 20 61 | 20 6e 75 6d 62 65 72 20 |ovides a| number |
|000060b0| 6f 66 20 69 6e 74 65 72 | 6e 61 6c 20 49 4f 20 64 |of inter|nal IO d|
|000060c0| 65 76 69 63 65 73 2e 20 | 49 6e 20 70 61 72 74 69 |evices. |In parti|
|000060d0| 63 75 6c 61 72 2c 20 74 | 68 65 72 65 20 69 73 20 |cular, t|here is |
|000060e0| 61 20 76 65 72 79 20 73 | 69 6d 70 6c 65 20 73 65 |a very s|imple se|
|000060f0| 72 69 61 6c 20 70 6f 72 | 74 20 74 68 61 74 20 69 |rial por|t that i|
|00006100| 00 00 00 0a 00 00 00 04 | 00 6d 00 0a 00 00 00 12 |........|.m......|
|00006110| 00 14 00 00 00 05 00 15 | 00 00 00 01 00 14 00 00 |........|........|
|00006120| 00 04 00 00 00 12 00 08 | 00 00 00 05 00 08 00 00 |........|........|
|00006130| 00 01 00 08 00 00 00 04 | 00 00 00 00 61 6c 20 63 |........|....al c|
|00006140| 69 72 63 75 69 74 73 2e | 00 00 00 00 00 00 00 00 |ircuits.|........|
|00006150| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006160| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006170| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006180| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006190| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000061a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000061b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000061c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000061d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000061e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000061f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00006200| 00 00 00 06 00 00 00 04 | 00 76 00 06 00 00 00 18 |........|.v......|
|00006210| 00 00 00 00 00 01 00 13 | 00 00 00 01 00 00 00 00 |........|........|
|00006220| 00 01 00 10 00 00 00 03 | 00 00 00 18 00 0b 00 00 |........|........|
|00006230| 00 01 00 0b 00 00 00 01 | 00 0b 00 00 00 01 00 0b |........|........|
|00006240| 00 00 00 03 00 00 00 00 | 00 00 00 01 00 0f 00 00 |........|........|
|00006250| 01 34 00 0f 00 00 00 01 | 00 0e 00 00 00 0b 00 0f |.4......|........|
|00006260| 00 00 03 87 00 0f 00 00 | 00 01 00 0f 00 00 00 f8 |........|........|
|00006270| 00 0f 00 00 00 01 00 0f | 00 00 01 4d 00 0f 00 00 |........|...M....|
|00006280| 00 01 00 0f 00 00 00 cb | 00 0f 00 00 00 01 00 0e |........|........|
|00006290| 00 00 00 07 00 0f 00 00 | 03 2d 00 0f 00 00 00 01 |........|.-......|
|000062a0| 00 0e 00 00 00 0c 00 0f | 00 00 02 7b 00 0f 00 00 |........|...{....|
|000062b0| 00 01 00 0f 00 00 01 b0 | 00 0f 00 00 00 01 00 0f |........|........|
|000062c0| 00 00 01 09 00 0f 00 00 | 00 00 00 00 00 00 00 0f |........|........|
|000062d0| 00 00 00 01 00 0e 00 00 | 00 12 00 0f 00 00 02 25 |........|.......%|
|000062e0| 00 0f 00 00 00 01 00 0f | 00 00 01 ba 00 0f 00 00 |........|........|
|000062f0| 00 01 00 0f 00 00 02 51 | 00 0f 00 00 00 01 00 00 |.......Q|........|
|00006300| 00 00 02 c9 00 00 00 10 | 00 65 00 d0 00 66 00 d0 |........|.e...f..|
|00006310| 00 67 00 8b 00 68 00 9e | 00 00 00 12 00 10 00 00 |.g...h..|........|
|00006320| 00 2d 00 11 00 00 00 01 | 00 0f 00 00 02 9b 00 00 |.-......|........|
|00006330| 00 6c 00 10 00 00 00 2d | 00 10 00 00 00 01 00 10 |.l.....-|........|
|00006340| 00 00 00 2f 00 10 00 00 | 00 2f 00 10 00 00 00 2f |.../....|./...../|
|00006350| 00 10 00 00 00 33 00 10 | 00 00 00 2d 00 10 00 00 |.....3..|...-....|
|00006360| 00 32 00 10 00 00 00 2e | 00 10 00 00 00 2f 00 10 |.2......|...../..|
|00006370| 00 00 00 2f 00 10 00 00 | 00 26 00 10 00 00 00 21 |.../....|.&.....!|
|00006380| 00 10 00 00 00 21 00 10 | 00 00 00 2a 00 10 00 00 |.....!..|...*....|
|00006390| 00 2f 00 10 00 00 00 2f | 00 10 00 00 00 00 00 00 |./...../|........|
|000063a0| 00 00 03 13 02 2e 8a 14 | de bd b2 65 17 2e 00 00 |........|...e....|
|000063b0| 00 00 00 00 00 00 00 00 | 00 00 00 2c ae 60 00 01 |........|...,.`..|
|000063c0| 00 00 80 00 64 01 80 02 | 00 13 d7 af 00 01 00 00 |....d...|........|
|000063d0| 00 00 00 00 00 00 00 00 | ff 00 00 00 00 00 00 00 |........|........|
|000063e0| 00 00 00 00 00 00 00 00 | 02 00 00 00 00 00 01 ff |........|........|
|000063f0| 00 00 04 00 00 00 00 00 | 01 03 00 00 1c 00 00 00 |........|........|
+--------+-------------------------+-------------------------+--------+--------+
Only 25.0 KB of data is shown above.