WESTERN DIGITAL CORPORATION

WD1006-WAH, WD1006S-WAH

Replaced by the WD1006V-MM1

Data bus: 16-bit, ISA

Size: WD1006S-WAH: Full-length, half-height card

WD1006-WAH: Half-length, full-height card

Hard drives supported: Two MFM ST506/412 drives

Floppy drives supported: None

Sector interleave: 1:1

Maximum heads/cyl.: 16 heads and 2048 cylinders

                    [Image]

                    The WD1006-WAH

[Image]

                    The WD1006S WAH

                           CONNECTIONS

                  Function                        Location

  4-pin connector-drive active LED                   J1

  20-pin data cable connector-drive 0                J2

  20-pin data cable connector-drive 1                J3

  34-pin control cable connector-hard drive          J4

                   USER CONFIGURABLE SETTINGS-WD1006-WAH

               Function                    Location           Setting

      16 head hard drive supported            W1             pins 1 & 2
                                                              closed

  »   8 head hard drive and RWC               W1             pins 2 & 3
      supported                                               closed

  »   Hard drive port address is              W3             pins 1 & 2
      1F0-1F7h                                                closed

      Hard drive port address is              W3             pins 2 & 3
      170-177h                                                closed

      Drive LED is not latched, W10           W4              closed
      must be open

      Reserved for WD1006-RAH              W5 to W8            open

      Enable caching                          W9               open

      Disable caching                         W9              closed

  »   Non-latched mode                        W10              open

      Latched mode                            W10             closed

      Isolates mounting bracket from          W11              open
      board

      Connects bracket to board               W11             closed
      ground

                  USER CONFIGURABLE SETTINGS-WD1006S WAH

               Function                    Location           Setting

       Etch on solder side connects           W1              closed
       pins 1 & 2. LED lights for
       drive selection. Remove W6 if
       W1 is installed.

       Drive LED is latched                   W1               open

  »    16 heads. No reduced write             W2             pins 1 & 2
       current                                                closed

       8 heads. Reduced write current         W2             pins 2 & 3
                                                              closed

  »    Enable caching                         W3               open

       Disable caching                        W3              closed

       Isolate mounting bracket from          W4               open
       board

       Connects mounting bracket to           W4              closed
       board

  »    Hard drive address is 1F0-1F7h         W5             pins 1 & 2
       (hard wired)                                           closed

       Hard drive port address is             W5             pins 2 & 3
       170-177h                                               closed

  »    Non-latched mode                       W6               open

       Latched mode                           W6              closed

                     WAIT STATE JUMPER - WD1006-WAH

             (F002 ONLY, F001 DOES NOT SUPPORT WAIT STATES)

           State              W2/jumper 1    W2/jumper 2    W2/jumper 3

  Zero Wait State enabled       closed           open           open

  One Wait State enabled         open           closed          open

  Two Wait States enabled        open            open          closed

                       MISCELLANEOUS TECHNICAL NOTES

      Not all jumpers are present. You must solder those that are not
                                 present.

   There are two versions of the WD1006S-WAH: the F001 and the F002. The
  F001 has caching firmware but no wait state generator; F002 has caching
                   firmware with a wait state generator.