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Unknown  |  1996-10-11  |  21.8 KB

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+--------+-------------------------+-------------------------+--------+--------+
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|00003230| 20 44 69 72 65 63 74 20 | 53 6c 6f 74 0d 50 65 74 | Direct |Slot.Pet|
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|00005440| 6f 6c 6f 67 79 20 69 6e | 74 72 6f 64 75 63 65 64 |ology in|troduced|
|00005450| 20 34 4d 42 2c 20 38 4d | 42 20 61 6e 64 20 31 36 | 4MB, 8M|B and 16|
|00005460| 4d 42 20 53 49 4d 4d 73 | 20 61 6c 6c 20 6f 66 20 |MB SIMMs| all of |
|00005470| 77 68 69 63 68 20 77 6f | 75 6c 64 20 62 65 20 74 |which wo|uld be t|
|00005480| 6f 6f 20 6d 75 63 68 20 | 6d 65 6d 6f 72 79 2c 20 |oo much |memory, |
|00005490| 77 68 65 6e 20 70 6c 61 | 63 65 64 20 69 6e 20 67 |when pla|ced in g|
|000054a0| 72 6f 75 70 73 20 6f 66 | 20 66 6f 75 72 20 69 6e |roups of| four in|
|000054b0| 74 6f 20 61 20 4d 61 63 | 2c 20 66 6f 72 20 61 20 |to a Mac|, for a |
|000054c0| 32 34 2d 62 69 74 20 73 | 79 73 74 65 6d 2e 20 54 |24-bit s|ystem. T|
|000054d0| 68 65 20 6d 65 6d 6f 72 | 79 20 77 61 73 20 6d 61 |he memor|y was ma|
|000054e0| 64 65 20 75 73 65 61 62 | 6c 65 20 74 68 72 6f 75 |de useab|le throu|
|000054f0| 67 68 20 74 68 65 20 75 | 73 65 20 6f 66 20 61 20 |gh the u|se of a |
|00005500| 76 65 72 79 20 73 70 65 | 63 69 61 6c 20 73 6f 66 |very spe|cial sof|
|00005510| 74 77 61 72 65 20 70 61 | 63 6b 61 67 65 20 63 61 |tware pa|ckage ca|
|00005520| 6c 6c 65 64 20 4f 70 74 | 69 6d 61 2c 20 77 68 69 |lled Opt|ima, whi|
|00005530| 63 68 20 6d 6f 64 69 66 | 69 65 64 20 74 68 65 20 |ch modif|ied the |
|00005540| 32 34 2d 62 69 74 20 73 | 79 73 74 65 6d 20 61 6e |24-bit s|ystem an|
|00005550| 64 20 74 75 72 6e 65 64 | 20 69 74 20 69 6e 74 6f |d turned| it into|
|00005560| 20 61 20 33 32 2d 62 69 | 74 20 73 79 73 74 65 6d | a 32-bi|t system|
|00005570| 20 77 68 69 63 68 20 63 | 6f 75 6c 64 20 64 69 72 | which c|ould dir|
|00005580| 65 63 74 6c 79 20 61 64 | 64 72 65 73 73 20 34 47 |ectly ad|dress 4G|
|00005590| 42 20 6f 66 20 52 41 4d | 2e 16 33 32 2d 42 69 74 |B of RAM|..32-Bit|
|000055a0| 20 41 64 64 72 65 73 73 | 69 6e 67 20 4d 6f 64 65 | Address|ing Mode|
|000055b0| 01 7d 33 32 2d 62 69 74 | 20 41 64 64 72 65 73 73 |.}32-bit| Address|
|000055c0| 69 6e 67 20 72 65 66 65 | 72 73 20 74 6f 20 68 6f |ing refe|rs to ho|
|000055d0| 77 20 6d 75 63 68 20 61 | 64 64 72 65 73 73 20 73 |w much a|ddress s|
|000055e0| 70 61 63 65 20 74 68 65 | 72 65 20 69 73 20 66 6f |pace the|re is fo|
|000055f0| 72 20 52 41 4d 20 61 6e | 64 20 74 68 65 20 43 50 |r RAM an|d the CP|
|00005600| 55 2e 20 41 20 33 32 2d | 62 69 74 20 53 79 73 74 |U. A 32-|bit Syst|
|00005610| 65 6d 20 68 61 73 20 32 | 20 72 61 69 73 65 64 20 |em has 2| raised |
|00005620| 74 6f 20 74 68 65 20 33 | 32 6e 64 20 50 6f 77 65 |to the 3|2nd Powe|
|00005630| 72 2c 20 6f 72 20 34 47 | 42 2c 20 6f 66 20 61 64 |r, or 4G|B, of ad|
|00005640| 64 72 65 73 73 20 73 70 | 61 63 65 2e 20 41 6c 6c |dress sp|ace. All|
|00005650| 20 76 65 72 73 69 6f 6e | 73 20 6f 66 20 53 79 73 | version|s of Sys|
|00005660| 74 65 6d 20 37 20 6f 66 | 66 65 72 20 33 32 2d 62 |tem 7 of|fer 32-b|
|00005670| 69 74 20 61 64 64 72 65 | 73 73 69 6e 67 2e 20 41 |it addre|ssing. A|
|00005680| 20 63 6f 6d 70 75 74 65 | 72 20 72 75 6e 6e 69 6e | compute|r runnin|
|00005690| 67 20 69 6e 20 33 32 2d | 62 69 74 20 4d 6f 64 65 |g in 32-|bit Mode|
|000056a0| 20 69 73 20 63 61 70 61 | 62 6c 65 20 6f 66 20 61 | is capa|ble of a|
|000056b0| 64 64 72 65 73 73 69 6e | 67 20 75 70 20 74 6f 20 |ddressin|g up to |
|000056c0| 66 6f 75 72 20 67 69 67 | 61 62 79 74 65 73 20 28 |four gig|abytes (|
|000056d0| 34 47 42 29 20 6f 66 20 | 52 41 4d 2e 20 41 70 70 |4GB) of |RAM. App|
|000056e0| 6c 65 20 68 61 73 20 70 | 6c 61 63 65 64 20 74 68 |le has p|laced th|
|000056f0| 65 20 6c 69 6d 69 74 20 | 61 74 20 6f 6e 65 20 67 |e limit |at one g|
|00005700| 69 67 61 62 79 74 65 20 | 61 6e 64 20 72 65 73 65 |igabyte |and rese|
|00005710| 72 76 65 73 20 74 68 65 | 20 6f 74 68 65 72 20 74 |rves the| other t|
|00005720| 68 72 65 65 20 67 69 67 | 61 62 79 74 65 73 2e |hree gig|abytes. |
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