/ D.I.S.C. 4 / D.I.S.C. 4.adf / 6d

< prev

next >

view JSON data

view as text

open on a Mac

open on a PC

+--------+-------------------------+-------------------------+--------+--------+
|00000000| 19 00 00 6d 66 6d 36 00 | 20 43 4f 4d 4d 41 4e 44 |...mfm6.| COMMAND|
|00000010| 20 4f 56 45 52 56 49 45 | 57 20 21 ff 00 24 0e 01 | OVERVIE|W !..$..|
|00000020| 00 e0 0f f0 0f 00 00 f0 | 00 0f 09 99 09 99 ff 00 |........|........|
|00000030| 18 0b 6c 73 72 2e 6c 00 | 00 23 31 2c 64 30 ff 20 |..lsr.l.|.#1,d0. |
|00000040| 08 0b 3b 73 68 69 66 74 | 20 72 69 67 68 74 ff 00 |..;shift| right..|
|00000050| 2e 08 61 6e 64 69 2e 6c | 00 23 24 ff 35 07 14 2c |..andi.l|.#$.5..,|
|00000060| 64 30 20 3b 66 69 6c 74 | 65 72 20 64 61 74 61 2d |d0 ;filt|er data-|
|00000070| 62 69 74 73 ff 00 29 08 | 61 6e 64 69 2e 6c 00 23 |bits..).|andi.l.#|
|00000080| 24 ff 35 07 08 2c 64 31 | 00 3b 64 69 74 6f ff 00 |$.5..,d1|.;dito..|
|00000090| 35 02 6c 65 61 ff 20 03 | 0d 62 6c 6f 63 6b 28 70 |5.lea. .|.block(p|
|000000a0| 63 29 2c 61 30 20 20 ff | 00 3a 0f 6d 6f 76 65 2e |c),a0  .|.:.move.|
|000000b0| 6c 20 64 30 2c 34 38 28 | 61 30 29 ff 20 04 20 3b |l d0,48(|a0). . ;|
|000000c0| 73 74 6f 72 65 20 6f 64 | 64 20 62 69 74 73 20 6f |store od|d bits o|
|000000d0| 66 20 68 65 61 64 65 72 | 63 68 65 63 6b 73 75 6d |f header|checksum|
|000000e0| ff 00 19 0f 6d 6f 76 65 | 2e 6c 20 64 31 2c 35 32 |....move|.l d1,52|
|000000f0| 28 61 30 29 ff 20 04 21 | 3b 73 74 6f 72 65 20 65 |(a0). .!|;store e|
|00000100| 76 65 6e 20 62 69 74 73 | 20 6f 66 20 68 65 61 64 |ven bits| of head|
|00000110| 65 72 63 68 65 63 6b 73 | 75 6d ff 00 15 00 3b ff |erchecks|um....;.|
|00000120| 2d 16 21 3b 6e 6f 77 20 | 63 61 6c 63 20 63 68 65 |-.!;now |calc che|
|00000130| 63 6b 73 75 6d 20 66 6f | 72 20 64 61 74 61 20 62 |cksum fo|r data b|
|00000140| 6c 6f 63 6b 2e ff 00 18 | 0c 61 64 64 61 2e 77 20 |lock....|.adda.w |
|00000150| 23 36 34 2c 61 30 ff 20 | 07 10 3b 72 65 61 63 68 |#64,a0. |..;reach|
|00000160| 20 64 61 74 61 20 62 6c | 6f 63 6b ff 00 29 0b 6d | data bl|ock..).m|
|00000170| 6f 76 65 71 20 20 23 30 | 2c 64 30 ff 20 08 0e 3b |oveq  #0|,d0. ..;|
|00000180| 63 6c 65 61 72 20 63 68 | 65 63 6b 73 75 6d ff 00 |clear ch|ecksum..|
|00000190| 2b 0d 6d 6f 76 65 2e 77 | 20 23 32 35 35 2c 64 37 |+.move.w| #255,d7|
|000001a0| ff 20 06 21 3b 61 63 63 | 65 73 73 20 32 35 36 20 |. .!;acc|ess 256 |
|000001b0| 6c 6f 6e 67 77 6f 72 64 | 73 20 28 31 30 32 34 20 |longword|s (1024 |
|000001c0| 62 79 74 65 73 29 ff 00 | 11 15 20 00 64 61 74 61 |bytes)..|.. .data|
|000001d0| 3a 6d 6f 76 65 2e 6c 20 | 28 61 30 29 2b 2c 64 32 |:move.l |(a0)+,d2|
|000001e0| ff 20 05 0e 3b 66 65 74 | 63 68 20 6c 6f 6e 67 77 |. ..;fet|ch longw|
|000001f0| 6f 72 64 ff 00 2b 0b 65 | 6f 72 2e 6c 20 20 64 32 |ord..+.e|or.l  d2|
|00000200| 2c 64 30 ff 20 08 08 3b | 63 61 6c 63 20 73 75 6d |,d0. ..;|calc sum|
|00000210| ff 00 31 02 64 62 66 ff | 20 03 06 64 37 2c 64 61 |..1.dbf.| ..d7,da|
|00000220| 74 61 ff 00 41 08 61 6e | 64 69 2e 6c 20 23 24 ff |ta..A.an|di.l #$.|
|00000230| 35 07 02 2c 64 30 ff 00 | 3b 0b 6d 6f 76 65 2e 6c |5..,d0..|;.move.l|
|00000240| 20 64 30 2c 64 31 ff 20 | 08 14 3b 73 74 6f 72 65 | d0,d1. |..;store|
|00000250| 20 63 68 65 63 6b 73 75 | 6d 20 69 6e 20 64 31 ff | checksu|m in d1.|
|00000260| 00 25 0b 6c 73 72 2e 6c | 20 20 23 31 2c 64 30 ff |.%.lsr.l|  #1,d0.|
|00000270| 20 08 0b 3b 73 68 69 66 | 74 20 72 69 67 68 74 ff | ..;shif|t right.|
|00000280| 00 2e 08 61 6e 64 69 2e | 6c 20 23 24 ff 35 07 14 |...andi.|l #$.5..|
|00000290| 2c 64 30 00 3b 66 69 6c | 74 65 72 20 64 61 74 61 |,d0.;fil|ter data|
|000002a0| 2d 62 69 74 73 ff 00 29 | 08 61 6e 64 69 2e 6c 20 |-bits..)|.andi.l |
|000002b0| 23 24 ff 35 07 08 2c 64 | 31 20 3b 64 74 6f 2e ff |#$.5..,d|1 ;dto..|
|000002c0| 00 35 02 6c 65 61 ff 20 | 03 0b 62 6c 6f 63 6b 28 |.5.lea. |..block(|
|000002d0| 70 63 29 2c 61 30 ff 00 | 3c 0f 6d 6f 76 65 2e 6c |pc),a0..|<.move.l|
|000002e0| 20 64 30 2c 35 36 28 61 | 30 29 ff 00 04 1f 3b 73 | d0,56(a|0)....;s|
|000002f0| 74 6f 72 65 20 6f 64 64 | 20 62 69 74 73 20 6f 66 |tore odd| bits of|
|00000300| 20 64 61 74 61 2d 63 68 | 65 63 6b 73 75 6d ff 00 | data-ch|ecksum..|
|00000310| 1a 0f 6d 6f 76 65 2e 6c | 20 64 31 2c 36 30 28 61 |..move.l| d1,60(a|
|00000320| 30 29 ff 00 04 20 3b 73 | 74 6f 72 65 20 65 76 65 |0)... ;s|tore eve|
|00000330| 6e 20 62 69 74 73 20 6f | 66 20 64 61 74 61 2d 63 |n bits o|f data-c|
|00000340| 68 65 63 6b 73 75 6d ff | 00 19 02 52 74 73 ff 00 |hecksum.|...Rts..|
|00000350| 33 4f 54 68 65 20 32 20 | 67 72 65 65 6e 20 6c 69 |3OThe 2 |green li|
|00000360| 6e 65 73 20 61 72 65 20 | 6d 61 72 6b 65 64 2c 20 |nes are |marked, |
|00000370| 62 65 63 61 75 73 65 20 | 79 6f 75 20 64 6f 6e 27 |because |you don'|
|00000380| 74 20 6e 65 65 64 20 74 | 68 65 6d 20 69 66 20 79 |t need t|hem if y|
|00000390| 6f 75 20 63 61 6c 63 75 | 6c 61 74 65 20 74 68 65 |ou calcu|late the|
|000003a0| 00 00 ff 20 03 26 63 68 | 65 63 6b 73 75 6d 73 20 |... .&ch|ecksums |
|000003b0| 42 45 46 4f 52 45 20 73 | 65 74 74 69 6e 67 20 61 |BEFORE s|etting a|
|000003c0| 6e 79 20 74 61 63 74 2d | 62 69 74 73 2e ff 00 24 |ny tact-|bits...$|
|000003d0| 4f 4f 6b 2e 20 49 20 74 | 68 69 6e 6b 20 75 70 20 |OOk. I t|hink up |
|000003e0| 74 6f 20 6e 6f 77 20 79 | 6f 75 27 72 65 20 61 62 |to now y|ou're ab|
|000003f0| 6c 65 20 74 6f 20 63 6f | 64 65 20 61 20 62 6c 6f |le to co|de a blo|
|00000400| 63 6b 20 61 6e 64 20 74 | 6f 20 63 61 6c 63 75 6c |ck and t|o calcul|
|00000410| 61 74 65 20 64 61 74 61 | 2d 20 61 6e 64 20 00 00 |ate data|- and ..|
|00000420| 00 ff 20 03 9b 68 65 61 | 64 65 72 2d 62 6c 6f 63 |.. ..hea|der-bloc|
|00000430| 6b 20 63 68 65 63 6b 73 | 75 6d 73 2e 20 4e 6f 74 |k checks|ums. Not|
|00000440| 65 3a 20 49 66 20 79 6f | 75 20 61 72 65 20 61 62 |e: If yo|u are ab|
|00000450| 6c 65 20 74 6f 20 63 6f | 64 65 20 61 00 62 6c 6f |le to co|de a.blo|
|00000460| 63 6b 20 79 6f 75 20 73 | 68 6f 75 6c 64 20 62 65 |ck you s|hould be|
|00000470| 00 61 62 6c 65 20 74 6f | 20 64 65 63 6f 64 65 20 |.able to| decode |
|00000480| 69 74 2c 20 74 6f 6f 2e | 20 4f 74 68 65 72 77 69 |it, too.| Otherwi|
|00000490| 73 65 20 79 6f 75 20 68 | 61 76 65 6e 27 74 20 75 |se you h|aven't u|
|000004a0| 6e 64 65 72 73 74 61 6e | 64 20 74 68 65 00 4d 46 |nderstan|d the.MF|
|000004b0| 4d 2d 66 6f 72 6d 61 74 | 2e 00 46 6f 72 20 61 00 |M-format|..For a.|
|000004c0| 00 ff 20 03 d5 63 6f 64 | 65 2d 20 61 6e 64 20 61 |.. ..cod|e- and a|
|000004d0| 20 64 65 63 6f 64 65 2d | 72 6f 75 74 69 6e 65 20 | decode-|routine |
|000004e0| 6c 6f 6f 6b 20 69 6e 20 | 74 68 65 20 73 6f 75 72 |look in |the sour|
|000004f0| 63 65 73 2d 64 69 72 20 | 6f 6e 20 74 68 69 73 20 |ces-dir |on this |
|00000500| 64 69 73 6b 2e 20 00 00 | 00 00 00 00 00 00 00 00 |disk. ..|........|
|00000510| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000520| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000530| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|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 00 00 00 00 00 |........|........|
|00000560| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000570| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000580| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000590| 00 00 00 00 00 00 00 00 | 00 00 00 ff 20 09 0b 00 |........|.... ...|
|000005a0| 00 00 66 6c 69 70 20 70 | 61 67 65 ff 00 18 ff 0e |..flip p|age.....|
|000005b0| 04 01 00 00 ff 0e 19 ff | 00 2e ff 0e 05 00 00 ff |........|........|
|000005c0| 0e 1e ff 00 29 ff 0e 05 | 00 00 ff 0e 0c 00 00 ff |....)...|........|
|000005d0| 0e 04 ff 00 35 ff 0e 14 | ff 00 3a ff 0e 35 ff 00 |....5...|..:..5..|
|000005e0| 19 ff 0e 36 ff 00 15 ff | 0e 39 ff 00 18 ff 0e 25 |...6....|.9.....%|
|000005f0| ff 00 29 ff 0e 23 ff 00 | 2b ff 0e 36 ff 00 11 01 |..)..#..|+..6....|
|00000600| 0e 00 ff 0e 28 ff 00 2b | ff 0e 1d ff 00 31 ff 0e |....(..+|.....1..|
|00000610| 0d ff 00 41 ff 09 13 ff | 00 3b ff 0e 29 ff 00 25 |...A....|.;..)..%|
|00000620| ff 0e 20 ff 00 2e ff 0e | 13 00 00 ff 0e 10 ff 00 |.. .....|........|
|00000630| 29 ff 0e 19 ff 00 35 ff | 0e 12 ff 00 3c ff 0e 0f |).....5.|....<...|
|00000640| ff 00 04 ff 0e 1f ff 00 | 1a ff 0e 0f ff 00 04 ff |........|........|
|00000650| 0e 20 ff 00 19 02 0e 0e | 0e ff 00 33 ff 0e 4d 01 |. ......|...3..M.|
|00000660| 00 00 ff 0e 2a ff 00 24 | ff 0e 4c 02 00 00 00 ff |....*..$|..L.....|
|00000670| 0e 3a 00 00 ff 0e 12 00 | 00 ff 0e 3b 00 00 ff 0e |.:......|...;....|
|00000680| 0a 00 00 ff 0e 04 01 00 | 00 ff 0e 44 94 00 00 00 |........|...D....|
|00000690| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000006a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000006b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000006c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000006d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000006e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|000006f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000700| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000710| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000720| 00 00 ff 0e 09 02 00 00 | 00 ff 0e 08             |........|....    |
+--------+-------------------------+-------------------------+--------+--------+