
WESTERN DIGITAL CORPORATION

XTAT-FASST

  Data bus:                  8-bit, ISA

  Size:                      Half-length, full-height card

  Hard drive supported:      Up to seven SCSI devices

  Floppy drives supported:   None

[Image]

                           CONNECTIONS

                   Function                         Location

  50-pin SCSI Interface connector - internal           J1

  50-pin SCSI Interface connector - external           J2

                             I/O OPTIONS - W1

             DMA                 Jumper 1      Jumper 2        Jumper 3

     Single Byte Programmed       open          open            open
      I/O

      DMA Cannel 1                closed         open            open

      Demand Drive I/O             open         closed           open

      DMA Channel 3               closed        closed          closed

                             INTERRUPT REQUEST

    IRQ      W1/jumper 4      W1/jumper 5     W1/jumper 6         W4

  IRQ2           open           closed           open         Jumper 1 -
                                                                closed

  IRQ3          closed          closed           open         Jumper 2 -
                                                                closed

  IRQ4           open            open           closed        Jumper 3 -
                                                                closed

  IRQ5          closed           open           closed        Jumper 4 -
                                                                closed

  IRQ6           open           closed          closed        Jumper 5 -
                                                                closed

  IRQ7          closed          closed          closed        Jumper 6 -
                                                                closed

                   I/O PORT ADDRESS - W2

  Address    Jumper 1    Jumper 2    Jumper3     Jumper 4

  200h        closed      closed      closed      closed

  220h         open       closed      closed      closed

  240h        closed       open       closed      closed

  260h         open        open       closed      closed

  280h        closed      closed       open       closed

  2A0h         open       closed       open       closed

  2C0h        closed       open        open       closed

  2E0h         open        open        open       closed

  300h        closed      closed      closed       open

  320h         open       closed      closed       open

  340h        closed       open       closed       open

  360h         open        open       closed       open

  380h        closed      closed       open        open

  3A0h         open       closed       open        open

  3C0h        closed       open        open        open

  3E0h         open        open        open        open

                             BIOS ADDRESS - W3

     Address        Jumper 1      Jumper 2      Jumper 3       Jumper 4

      C000h          closed        closed        closed         closed

      C400h           open         closed        closed         closed

     C800h          closed         open         closed         closed

      CC00h           open          open         closed         closed

      D000h          closed        closed         open          closed

      D4OOh           open         closed         open          closed

      D800h          closed         open          open          closed

      DC00h           open          open          open          closed

      E000h          closed        closed        closed          open

      E400h           open         closed        closed          open

      E800h          closed         open         closed          open

      EC00h           open          open         closed          open

      F000h          closed        closed         open           open

      F4OOh           open         closed         open           open

      F800h          closed         open          open           open

      FC00h           open          open          open           open

