/ Developer CD Series 1994…tember: Reference Library / Dev.CD Sep 94.toast / Technical Documentation / PCI Information / PCI Seed Note folder / PCI Seed Note

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|00004ca0| 20 73 74 65 72 65 6f 20 | 73 6f 75 6e 64 20 69 6e | stereo |sound in|
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|00004cf0| 6f 6d 70 75 74 65 72 73 | 20 70 72 6f 76 69 64 65 |omputers| provide|
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|00004d60| 28 44 41 56 29 20 69 6e | 74 65 72 66 61 63 65 2e |(DAV) in|terface.|
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|00004e10| 20 44 41 56 20 63 6f 6e | 6e 65 63 74 6f 72 20 63 | DAV con|nector c|
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|00004e90| 62 75 73 2e 0d 46 6f 72 | 20 66 75 72 74 68 65 72 |bus..For| further|
|00004ea0| 20 69 6e 66 6f 72 6d 61 | 74 69 6f 6e 20 61 62 6f | informa|tion abo|
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|00004ed0| 6f 73 68 20 44 65 76 65 | 6c 6f 70 65 72 20 4e 6f |osh Deve|loper No|
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|00004f00| 6e 74 61 72 79 20 44 6f | 63 75 6d 65 6e 74 73 2c |ntary Do|cuments,|
|00004f10| d3 20 69 6e 20 74 68 65 | 20 70 72 65 66 61 63 65 |. in the| preface|
|00004f20| 2e 0d 44 61 74 61 20 46 | 6f 72 6d 61 74 73 20 61 |..Data F|ormats a|
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|00004f40| 0d 54 68 69 73 20 63 68 | 61 70 74 65 72 20 64 65 |.This ch|apter de|
|00004f50| 73 63 72 69 62 65 73 20 | 74 68 65 20 6d 65 6d 6f |scribes |the memo|
|00004f60| 72 79 20 73 70 61 63 65 | 73 20 74 68 61 74 20 4d |ry space|s that M|
|00004f70| 61 63 69 6e 74 6f 73 68 | 20 63 6f 6d 70 75 74 65 |acintosh| compute|
|00004f80| 72 73 20 72 65 73 65 72 | 76 65 20 66 6f 72 20 50 |rs reser|ve for P|
|00004f90| 43 49 20 75 73 65 20 61 | 6e 64 20 64 65 66 69 6e |CI use a|nd defin|
|00004fa0| 65 73 20 74 68 65 20 64 | 61 74 61 20 66 6f 72 6d |es the d|ata form|
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|00004fe0| 72 61 6e 73 66 65 72 20 | 6f 76 65 72 20 50 43 49 |ransfer |over PCI|
|00004ff0| 20 62 75 73 65 73 20 61 | 72 65 20 64 65 73 63 72 | buses a|re descr|
|00005000| 69 62 65 64 20 69 6e 20 | 43 68 61 70 74 65 72 20 |ibed in |Chapter |
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|00005050| 73 65 72 76 65 20 73 70 | 65 63 69 66 69 63 20 61 |serve sp|ecific a|
|00005060| 72 65 61 73 20 6f 66 20 | 74 68 65 69 72 20 6f 76 |reas of |their ov|
|00005070| 65 72 61 6c 6c 20 33 32 | 2d 62 69 74 20 61 64 64 |erall 32|-bit add|
|00005080| 72 65 73 73 20 73 70 61 | 63 65 20 66 6f 72 20 75 |ress spa|ce for u|
|00005090| 73 65 20 62 79 20 50 43 | 49 2d 62 61 73 65 64 20 |se by PC|I-based |
|000050a0| 65 78 70 61 6e 73 69 6f | 6e 20 63 61 72 64 73 2e |expansio|n cards.|
|000050b0| 20 50 43 49 20 6d 65 6d | 6f 72 79 20 61 6c 6c 6f | PCI mem|ory allo|
|000050c0| 63 61 74 69 6f 6e 20 69 | 6e 20 74 68 65 20 4d 61 |cation i|n the Ma|
|000050d0| 63 69 6e 74 6f 73 68 20 | 73 79 73 74 65 6d 20 66 |cintosh |system f|
|000050e0| 6f 6c 6c 6f 77 73 20 74 | 68 65 73 65 20 67 65 6e |ollows t|hese gen|
|000050f0| 65 72 61 6c 20 70 72 69 | 6e 63 69 70 6c 65 73 3a |eral pri|nciples:|
|00005100| 0d 6e 09 41 20 4d 61 63 | 69 6e 74 6f 73 68 20 73 |.n.A Mac|intosh s|
|00005110| 79 73 74 65 6d 20 6d 61 | 79 20 63 6f 6e 74 61 69 |ystem ma|y contai|
|00005120| 6e 20 75 70 20 74 6f 20 | 66 6f 75 72 20 73 65 70 |n up to |four sep|
|00005130| 61 72 61 74 65 20 50 43 | 49 20 62 75 73 65 73 2c |arate PC|I buses,|
|00005140| 20 65 61 63 68 20 77 69 | 74 68 20 69 74 73 20 6f | each wi|th its o|
|00005150| 77 6e 20 50 43 49 20 62 | 72 69 64 67 65 2e 0d 6e |wn PCI b|ridge..n|
|00005160| 09 54 68 65 20 4d 61 63 | 69 6e 74 6f 73 68 20 73 |.The Mac|intosh s|
|00005170| 79 73 74 65 6d 20 61 73 | 73 69 67 6e 73 20 74 68 |ystem as|signs th|
|00005180| 65 20 61 64 64 72 65 73 | 73 20 73 70 61 63 65 73 |e addres|s spaces|
|00005190| 20 66 6f 72 20 64 65 76 | 69 63 65 73 20 6f 6e 20 | for dev|ices on |
|000051a0| 69 74 73 20 50 43 49 20 | 62 75 73 65 73 2e 0d 6e |its PCI |buses..n|
|000051b0| 09 54 68 65 20 6d 65 6d | 6f 72 79 20 72 61 6e 67 |.The mem|ory rang|
|000051c0| 65 20 61 76 61 69 6c 61 | 62 6c 65 20 66 6f 72 20 |e availa|ble for |
|000051d0| 75 73 65 20 62 79 20 50 | 43 49 20 64 65 76 69 63 |use by P|CI devic|
|000051e0| 65 73 20 72 75 6e 73 20 | 66 72 6f 6d 20 24 38 30 |es runs |from $80|
|000051f0| 30 30 20 30 30 30 30 20 | 74 6f 20 24 45 46 46 46 |00 0000 |to $EFFF|
|00005200| 20 46 46 46 46 20 61 6e | 64 20 24 46 39 30 30 20 | FFFF an|d $F900 |
|00005210| 30 30 30 30 20 74 6f 20 | 24 46 45 46 46 20 46 46 |0000 to |$FEFF FF|
|00005220| 46 46 2c 20 61 6c 6c 20 | 6f 66 20 77 68 69 63 68 |FF, all |of which|
|00005230| 20 69 73 20 61 76 61 69 | 6c 61 62 6c 65 20 74 6f | is avai|lable to|
|00005240| 20 65 78 70 61 6e 73 69 | 6f 6e 20 63 61 72 64 73 | expansi|on cards|
|00005250| 2e 0d 6e 09 50 43 49 20 | 65 78 70 61 6e 73 69 6f |..n.PCI |expansio|
|00005260| 6e 20 63 61 72 64 73 20 | 75 73 65 20 74 68 65 20 |n cards |use the |
|00005270| 6d 65 6d 6f 72 79 20 73 | 70 61 63 65 20 74 68 61 |memory s|pace tha|
|00005280| 74 20 74 68 65 20 4d 61 | 63 69 6e 74 6f 73 68 20 |t the Ma|cintosh |
|00005290| 73 79 73 74 65 6d 20 72 | 65 73 65 72 76 65 73 20 |system r|eserves |
|000052a0| 64 79 6e 61 6d 69 63 61 | 6c 6c 79 20 77 69 74 68 |dynamica|lly with|
|000052b0| 69 6e 20 74 68 65 20 6f | 76 65 72 61 6c 6c 20 50 |in the o|verall P|
|000052c0| 43 49 20 72 61 6e 67 65 | 3b 20 74 68 65 20 6f 6e |CI range|; the on|
|000052d0| 6c 79 20 66 69 78 65 64 | 20 6d 65 6d 6f 72 79 20 |ly fixed| memory |
|000052e0| 61 64 64 72 65 73 73 65 | 73 20 61 72 65 20 69 6e |addresse|s are in|
|000052f0| 20 74 68 65 20 73 70 61 | 63 65 73 20 61 6c 6c 6f | the spa|ces allo|
|00005300| 63 61 74 65 64 20 74 6f | 20 73 79 73 74 65 6d 20 |cated to| system |
|00005310| 63 6f 6e 74 72 6f 6c 20 | 61 6e 64 20 74 68 65 20 |control |and the |
|00005320| 50 43 49 20 62 72 69 64 | 67 65 73 2e 0d 54 68 65 |PCI brid|ges..The|
|00005330| 20 67 65 6e 65 72 61 6c | 20 6d 65 6d 6f 72 79 20 | general| memory |
|00005340| 61 6c 6c 6f 63 61 74 69 | 6f 6e 20 73 63 68 65 6d |allocati|on schem|
|00005350| 65 20 66 6f 72 20 4d 61 | 63 69 6e 74 6f 73 68 20 |e for Ma|cintosh |
|00005360| 63 6f 6d 70 75 74 65 72 | 73 20 77 69 74 68 20 50 |computer|s with P|
|00005370| 43 49 20 62 75 73 65 73 | 20 69 73 20 73 68 6f 77 |CI buses| is show|
|00005380| 6e 20 69 6e 20 54 61 62 | 6c 65 20 32 2d 31 2e 0d |n in Tab|le 2-1..|
|00005390| 54 61 62 6c 65 20 32 2d | 31 09 4d 61 63 69 6e 74 |Table 2-|1.Macint|
|000053a0| 6f 73 68 20 6d 65 6d 6f | 72 79 20 61 6c 6c 6f 63 |osh memo|ry alloc|
|000053b0| 61 74 69 6f 6e 73 0d 41 | 64 64 72 65 73 73 20 72 |ations.A|ddress r|
|000053c0| 61 6e 67 65 09 55 73 61 | 67 65 09 0d 24 30 30 30 |ange.Usa|ge..$000|
|000053d0| 30 20 30 30 30 30 20 74 | 6f 20 24 37 46 46 46 20 |0 0000 t|o $7FFF |
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|000053f0| 0d 24 38 30 30 30 20 30 | 30 30 30 20 74 6f 20 24 |.$8000 0|000 to $|
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|000063d0| 65 20 4d 6f 74 6f 72 6f | 6c 61 20 36 38 30 30 30 |e Motoro|la 68000|
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+--------+-------------------------+-------------------------+--------+--------+