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  1.  
  2.     ╔═══════════════════════════════════════════════════════════════════════╗
  3.     ║  Adaptec, Incorporated                             AHA-1540B/42B      ║
  4.     ╠═══════════════════════════════════════════════════════════════════════╣
  5.     ║                       LED    FLOPPY       HARD DRIVE  F1              ║
  6.     ║                      ┌────────────────────────────────────┐           ║
  7.     ║  Floppy (34 pins)    │....  1:::::::   1::::::::::::: ┌┐  │╔═══       ║
  8.     ║  INT.HD.(50 pins)    │                  ══2══    ══3══├┤ ┌┴╫─┐        ║
  9.     ║  EXT.HD.(50 pins)    │                      ══5══     └┘ │ ║ │        ║
  10.     ║                      │             J5 1::::::::::::   1: │ ║ │EXT.    ║
  11.     ║  ══2══  SCSI BUS     │              J6 1::::          :: │ ║ │SCSI    ║
  12.     ║  Term. Resistors     │ ┌─────┐              ┌──────┐  :: │ ║ │        ║
  13.     ║                      │ │uCODE│   J8 1:::::: │ BIOS │  J7 │ ║ │        ║
  14.     ║  F1: 1.5A, 125V      │ └─────┘ J9 1:::::::: └──────┘     └┬╫─┘        ║
  15.     ║  Term. Power Fuse    └───────────┐       ┌┐            ┌──┘║          ║
  16.     ║                                  └───────┘└────────────┘   ║          ║
  17.     ║                                                                       ║
  18.     ║  INTERFACE:  ISA(AT)->SCSI-2                                          ║
  19.     ║  CONTROLS:   2 Floppy Drives (1542B only)(360KB, 720KB, 1.2MB, 1.44MB)║
  20.     ║              7 SCSI Devices                                           ║
  21.     ║                                                                       ║
  22.     ║  J5: General Control                                                  ║
  23.     ║      J5-1: Synchronous Negotiation Enable: *Disabled: (no Jumper)     ║
  24.     ║                                             Enabled: J5-1 Jumpered    ║
  25.     ║                                                                       ║
  26.     ║      J5-2: Diagnostics (Factory use ONLY): *Disabled: (no jumper)     ║
  27.     ║                                                                       ║
  28.     ║      J5-3: SCSI Parity Bit: *Enable Parity: (no jumper)               ║
  29.     ║                              Disable Parity: J5-3 Jumpered            ║
  30.     ║                                                                       ║
  31.     ║      J5-4,5,6: SCSI Address:  0 1 2 3 4 5 6 7   (7 is Default)        ║
  32.     ║                            4  x - x - x - x -                         ║
  33.     ║                            5  x x - - x x - -   (x = Jumpered)        ║
  34.     ║                            6  x x x x - - - -                         ║
  35.     ║                                                                       ║
  36.     ║      J5-7,8: DMA Channel:  0 5 6 7    (5 is Default)                  ║
  37.     ║                         7  x - x -                                    ║
  38.     ║                         8  x x - -                                    ║
  39.     ║                                                                       ║
  40.     ║      J5-9,10,11: Interrupt Chan.:  9 10 11 12 14 15  (11 is Default)  ║
  41.     ║                                 9  -  x  -  x  -  x                   ║
  42.     ║                                10  -  -  x  x  -  -                   ║
  43.     ║                                11  -  -  -  -  x  x                   ║
  44.     ║                                                                       ║
  45.     ║      J5-12,13: DMA Transfer Speed:   5.0  5.7  6.7  8.0  (5.7 is      ║
  46.     ║                                  12   -    x    -    x   Default)     ║
  47.     ║                                  13   -    -    x    x                ║
  48.     ║                                                                       ║
  49.     ║  J6: BIOS/Auto Sense Control:  1 x      1: BIOS Enable                ║
  50.     ║                                2 -      2,3,4: Not Used               ║
  51.     ║                                3 -      5: Auto Sense disable         ║
  52.     ║                                4 -                                    ║
  53.     ║                                5 -      (1 is Default)                ║
  54.     ║                                                                       ║
  55.     ║                                                                       ║
  56.     ╚═══════════════════════════════════════════════════════════════════════╝
  57.                                                                             
  58.     ╔═══════════════════════════════════════════════════════════════════════╗
  59.     ║   AHA-1540B,1542B                                             Page 2  ║
  60.     ╠═══════════════════════════════════════════════════════════════════════╣
  61.     ║                                                                       ║
  62.     ║  J7: Address Selection                                                ║
  63.     ║                                                                       ║
  64.     ║      J7-1: Floppy Secondary Address  (Default is not jumpered)        ║
  65.     ║                                                                       ║
  66.     ║      J7-2,3,4: AT I/O Port Addr.:  334 330 230 134 130                ║
  67.     ║                                 2   -   x   -   x   -    (Default     ║
  68.     ║                                 3   -   -   x   x   -    is 330h)     ║
  69.     ║                                 4   -   -   -   x   x                 ║
  70.     ║                                                                       ║
  71.     ║     J7-5,6: BIOS Wait State (ns):   0  100 200 300                    ║
  72.     ║                                 5   -   x   -   x        (Default     ║
  73.     ║                                 6   -   -   x   x          is 0)      ║
  74.     ║                                                                       ║
  75.     ║     J7-7,8: BIOS Address:   DC000 CC000 D8000 C8000                   ║
  76.     ║                         7     -     x     -     x        (Default     ║
  77.     ║                         8     -     -     x     x        is DC000)    ║
  78.     ║                                                                       ║
  79.     ║  J8: Floppy Disk Selection:    1: Floppy Enable       (on  Enabled )  ║
  80.     ║                              2,3: DMA REQ. (2 or 3)   (2  DMA REQ.2)  ║
  81.     ║        (1542B only)          4,5: DMA ACK. (2 or 3)   (4  DMA ACK.2)  ║
  82.     ║                              6,7: INT.REQ. (6 or 10)  (6  INT.REQ.6)  ║
  83.     ║                                8: Dual Speed Enable   (off Disabled)  ║
  84.     ║                                                                       ║
  85.     ║  J9: DMA/Interrupt:   1,2,3,4: DMA REQ. (0,5,6,7)     (2  DMA REQ.5)  ║
  86.     ║                       5,6,7,8: DMA ACK. (0,5,6,7)     (6  DMA ACK.5)  ║
  87.     ║              9,10,11,12,13,14: INT.REQ. (9,10,11,                     ║
  88.     ║                                         12,14,15)     (11 INT.REQ.11) ║
  89.     ║                                                                       ║
  90.     ╠══════════════════════════╕ Additional Info ╒══════════════════════════╣
  91.     ║                                                                       ║
  92.     ║    This Host Adapter may also be ordered with a high-density SCSI-2   ║
  93.     ║ external connector, as part no: 1540B100 or 1542B100.                 ║
  94.     ║                                                                       ║
  95.     ║    SCSI bus terminators MUST be located at each end of the SCSI bus.  ║
  96.     ║ If using internal SCSI peripherals only, the terminators on the H.A.  ║
  97.     ║ must remain in place, and the device at the farthest point must also  ║
  98.     ║ have it's terminators in place.  All devices between must have their  ║
  99.     ║ terminators removed.  If using internal AND external peripherals,     ║
  100.     ║ the devices at the end of the internal, and external cables should    ║
  101.     ║ retain their terminators, and all those between, including the Host   ║
  102.     ║ Adapter, should have theirs removed.                                  ║
  103.     ║                                                                       ║
  104.     ║    Adaptec has added support for drives larger than 1GB with their    ║
  105.     ║ 3.20 BIOS and uCODE.  When correctly set up, the host adapter will    ║
  106.     ║ automatically select the correct translation for the drive.  The      ║
  107.     ║ translation for drives over 1GB increases the heads.                  ║
  108.     ║                                                                       ║
  109.     ║   The 154x series is a Bus Mastering Host Adapter, and is well-suited ║
  110.     ║ for multi-tasking Operating Systems, such as UNIX and OS/2.           ║
  111.     ╚═══════════════════════════════════════════════════════════════════════╝
  112.