WESTERN DIGITAL CORPORATION
WD1006-WAH, WD1006S-WAH
Replaced by the WD1006V-MM1
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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
The WD1006-WAH
The WD1006S WAH
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CONNECTIONS | |
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Function |
Location |
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4-pin connector-drive active LED |
J1 |
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20-pin data cable connector-drive 0 |
J2 |
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20-pin data cable connector-drive 1 |
J3 |
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34-pin control cable connector-hard drive |
J4 |
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USER CONFIGURABLE SETTINGS-WD1006-WAH | |||
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Function |
Location |
Setting | |
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16 head hard drive supported |
W1 |
pins 1 & 2 closed | |
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8 head hard drive and RWC supported |
W1 |
pins 2 & 3 closed | |
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Hard drive port address is 1F0-1F7h |
W3 |
pins 1 & 2 closed | |
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Hard drive port address is 170-177h |
W3 |
pins 2 & 3 closed | |
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Drive LED is not latched, W10 must be open |
W4 |
closed | |
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Reserved for WD1006-RAH |
W5 to W8 |
open | |
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Enable caching |
W9 |
open | |
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Disable caching |
W9 |
closed | |
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Non-latched mode |
W10 |
open | |
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Latched mode |
W10 |
closed | |
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Isolates mounting bracket from board |
W11 |
open | |
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Connects bracket to board ground |
W11 |
closed | |
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USER CONFIGURABLE SETTINGS-WD1006S WAH | |||
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Function |
Location |
Setting | |
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Etch on solder side connects pins 1 & 2. LED lights for drive selection. Remove W6 if W1 is installed. |
W1 |
closed | |
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Drive LED is latched |
W1 |
open | |
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16 heads. No reduced write current |
W2 |
pins 1 & 2 closed | |
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8 heads. Reduced write current |
W2 |
pins 2 & 3 closed | |
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Enable caching |
W3 |
open | |
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Disable caching |
W3 |
closed | |
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Isolate mounting bracket from board |
W4 |
open | |
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Connects mounting bracket to board |
W4 |
closed | |
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Hard drive address is 1F0-1F7h (hard wired) |
W5 |
pins 1 & 2 closed | |
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Hard drive port address is 170-177h |
W5 |
pins 2 & 3 closed | |
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Non-latched mode |
W6 |
open | |
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Latched mode |
W6 |
closed | |
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WAIT STATE JUMPER - WD1006-WAH (F002 ONLY, F001 DOES NOT SUPPORT WAIT STATES) | |||
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State |
W2/jumper 1 |
W2/jumper 2 |
W2/jumper 3 |
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Zero Wait State enabled |
closed |
open |
open |
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One Wait State enabled |
open |
closed |
open |
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Two Wait States enabled |
open |
open |
closed |
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MISCELLANEOUS TECHNICAL NOTES |
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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. |