WD7000 jumper settings on an Apollo Workstations

Some bare minimum information about the jumper settings on the WD7000 controller card.

NOTE 1: With the SCSI interface enabled, you CAN NOT use the QIC-24 cartridge drive with the separate Archive controller board. If you want a cartridge drive you must use the SCSI cartridge drive.

NOTE 2: The WD7000 controller automatically supports both 380MB and 760MB drives without any jumper changes.


The following WD7000 jumper settings should work for a 380MB or 760MB ESDI
boot disk, with external SCSI interace *ENABLED* and the SCSI TAPE interface
enabled.  The floppy is marked as present but in most cases the jumper
settings don't matter.


key:  * = pin with jumper block in place
      o = bare pin

W1  * * o                      floppy control

W2  * *                        floppy precomp (in)

W3  o o                        floppy spindle speed (out)

W4  o o                        floppy presence (out = floppy, in = no floppy)

W5  * o o * o o o * o o o [1]  Disk I/F, jumper across rows 1/2 for ESDI
    * o o * o o o * o o o [2]  boot disk or across 2/3 for SCSI disks.
    o o o o o o o o o o o [3]
                        ^----- IRQ 11
                      ^------- IRQ 12
                    ^--------- IRQ 13
                  ^----------- IRQ 14
                ^------------- IRQ 15
              ^--------------- DACK 5
            ^----------------- DACK 6
          ^------------------- DACK 7
        ^--------------------- DRQ 5
      ^----------------------- DRQ 6
    ^------------------------- DRQ 7

W6  o o o * o * * o            I/O address = IA0
    o o o * o * * o

W7  o o o o o  [1]             SCSI TAPE Interrupt = IRQ5.  Jumper across rows
    o o * o o  [2]             1/2 for ESDI i/f or 2/3 for SCSI i/f.
    o o * o o  [3]
            ^ ---------------- IRQ 9
          ^------------------- IRQ 7
        ^--------------------- IRQ 5
      ^----------------------- IRQ 4
    ^------------------------- IRQ 3

W8  o o o o o   [1]            TAPE DRQ/DACK select. Jumper across rows
    * o * o o   [2]            1/2 for ESDI i/f or 2/3 for SCSI i/f.
    * o * o o   [3]
          ^------------------- DACK 3
        ^--------------------- DACK 1
      ^----------------------- DRQ 3
    ^------------------------- DRQ 1

W9  o o o o o o o *            TAPE I/O address = 200
    o o o o o o o *

W10 * *                        SCSI Terminator power, IN = powered


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