WESTERN DIGITAL CORPORATION
WD1003-RAH, WD1003-WAH
Replaced by the WD1003V-SR1
and WD1003V-MM1 respectively
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Data bus: 16-bit, PC/AT
Size: Full-length, full-height card
Hard drives supported: WD1003-RAH: Two RLL ST506/412 drives
WD1003-WAH: Two MFM ST506/412 drives
Floppy drives supported: None
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CONNECTIONS | |
|
Function |
Location |
|
34-pin data cable connector-hard drive |
J1 |
|
20-pin data cable connector-drive 0 |
J2 |
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20-pin data cable connector-drive 1 |
J3 |
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4-pin connector-drive active LED |
J6 |
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USER CONFIGURABLE SETTING - WD1003-RAH | |||
|
Function |
Location |
Setting | |
| » |
Auto deselect enabled (PC/AT) |
W1 |
closed |
|
Auto deselect disabled (Compaq) |
W1 |
open | |
| » |
Hard drive port address is 1F0-1F7 & 3F0-3F7h |
W2 |
open |
|
Hard drive port address is 170-177 & 370-377h |
W2 |
closed | |
|
WD11C00C-22 chip at U8 or if W5/pins 2-3 closed |
W3 |
open | |
|
WD11C00-22 chip at U8 & W5/pins 1-2 closed |
W3 |
closed | |
| » |
Drive 0 translation disabled |
W4 |
pins 2 & 3 closed |
|
Drive 0 translation enabled |
W4 |
pins 1 & 2 closed | |
| » |
Write gate and drive select lines enabled only when drive is accessed |
W5 |
pins 2 & 3 closed |
|
Write gate and drive select lines are disabled during power-up and when +5V is < +4.15V |
W5 |
pins 1 & 2 closed | |
| » |
Drive 1 logical translation disabled |
W6 |
pins 2 & 3 closed |
|
Drive 1 logical translation enabled |
W6 |
pins 1 & 2 closed | |
|
USER CONFIGURABLE SETTINGS - WD1003-WAH | |||
|
Function |
Location |
Setting | |
| » |
Auto deselect enabled (PC/AT) |
W1 |
closed |
|
Auto deselect disabled (Compaq) |
W1 |
open | |
| » |
Hard drive port address is 1F0-1F7 & 3F0-3F7 |
W2 |
open |
|
Hard drive port address is 170-177 & 370-377 |
W2 |
closed | |
|
WD11C00A-22 chip at U8 or if W5/pins 2-3 closed |
W3 |
open | |
|
WD11C00-22 chip at U8 & W5/pins 1-2 closed |
W3 |
closed | |
| » |
Ties firmware sense bit high |
W4 |
pins 2 & 3 closed |
|
Supports 2 head, 612 cyl. second drive with tandard system setup for 4 head, 306 cyl. drive |
W4 |
pins 1 & 2 closed | |
| » |
Write gate and drive select lines enabled only when drive is accessed |
W5 |
pins 2 & 3 closed |
|
Write gate and drive select lines are disabled during power-up and when +5V is < +4.15V |
W5 |
pins 1 & 2 closed | |
| » |
Ties input high, 35 m |
W6 |
pins 2 & 3 closed |
|
Ties input low, 16 m |
W6 |
pins 1 & 2 closed | |