WESTERN DIGITAL CORPORATION
WD1002S-WX2A
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Data bus: 8-bit, PC/XT
Size: Full-length, full-height card
Hard drives supported: Two MFM ST506/412 drives
Floppy drives supported: None
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CONNECTIONS | |
|
Function |
Location |
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34-pin control cable connector-hard drive |
J1 |
|
20-pin data cable connector-drive 0 |
J2 |
|
20-pin data cable connector-drive 1 |
J3 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Location |
Setting | |
| » |
Not used |
W1 & W2 |
N/A |
| » |
BIOS enabled |
W3 |
closed |
|
BIOS disabled |
W3 |
open | |
| » |
I/O port address 320h |
W4 |
pins 2 & 3 closed |
|
I/O port address 324h |
W4 |
pins 1 & 2 closed | |
| » |
BIOS size 32K or 64K |
W5 |
pins 1 & 2 closed |
|
BIOS size 16K |
W5 |
pins 2 & 3 closed | |
| » |
16 head hard drive supported (Head Select 3) |
W6 |
pins 1 & 2 closed |
|
8 Head hard drive with RWC supported |
W6 |
pins 2 & 3 closed | |
| » |
Hard Drive Interrupt is IRQ5 |
W7 |
pins 1 & 2 closed |
|
Hard Drive Interrupt is IRQ2 |
W7 |
pins 2 & 3 closed | |
| » |
Factory setting |
W8 |
pins 2 & 3 closed |
|
CO23 setting |
W9 |
pins 1 & 2 closed | |
| » |
Standard Configuration |
W10 |
pins 2 & 3 closed |
|
Special feature |
W10 |
pins 1 & 2 closed | |
| » |
Factory configured - do not alter |
SW1/jumper 5 |
open |
| » |
Factory configured - do not alter |
SW1/jumper 6 |
open |
| » |
Hard Drive Interrupt is IRQ5 |
SW1/jumper 7 |
open |
|
Hard Drive Interrupt is IRQ2 (JP7/pins 2-3 must be closed and a custom BIOS must be install) |
SW1/jumper 7 |
closed | |
| » |
AT mode enabled |
SW1/jumper 8 |
closed |
|
XT mode enabled |
SW1/jumper 8 |
open | |
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BIOS REVISION "SUPER BIOS" DRIVE TYPE TABLE | |||||||||
|
Drive 1 |
Drive 0 | ||||||||
|
# |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
Cap. |
Hds |
Cyls. |
WP |
RWC |
|
0 |
closed |
closed |
closed |
closed |
21MB |
4 |
612 |
450 |
450 |
|
1 |
open |
closed |
open |
closed |
10MB |
4 |
306 |
0 |
153 |
|
2 |
closed |
open |
closed |
open |
10MB |
2 |
615 |
450 |
450 |
|
3 |
open |
open |
open |
open |
21MB |
4 |
615 |
450 |
450 |
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BIOS REVISION "G" DRIVE TYPE TABLE | |||||||||
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# |
Drive 1 |
Drive 0 | |||||||
|
# |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
Cap. |
Hds. |
Cyl. |
WP |
RWC |
|
0 |
closed |
closed |
closed |
closed |
20MB |
4 |
612 |
0 |
none |
|
1 |
open |
closed |
open |
closed |
10MB |
2 |
612 |
128 |
128 |
|
2 |
closed |
open |
closed |
open |
20MB |
4 |
612 |
128 |
none |
|
3 |
open |
open |
open |
open |
10MB |
4 |
306 |
0 |
none |
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BIOS REVISION "H" DRIVE TYPE TABLE JUMPERS 3, 4, & 8 CONFIGURE DRIVE 0 JUMPERS 1, 2 & 7 CONFIGURE DRIVE 1 | ||||||||
|
# |
SW1/1 & 3 |
SW1/2 & 4 |
SW1/7 & 8 |
Cap. |
Hds |
Cyl. |
WP |
RWC |
|
0 |
closed |
closed |
closed |
42MB |
5 |
977 |
none |
none |
|
1 |
open |
closed |
closed |
31MB |
5 |
733 |
300 |
none |
|
2 |
closed |
open |
closed |
33MB |
6 |
640 |
none |
none |
|
3 |
open |
open |
closed |
62MB |
8 |
1024 |
1024 |
1024 |
|
4 |
closed |
closed |
open |
42MB |
6 |
820 |
none |
none |
|
5 |
open |
closed |
open |
10MB |
2 |
612 |
128 |
128 |
|
6 |
closed |
open |
open |
20MB |
4 |
612 |
128 |
none |
|
7 |
open |
open |
open |
10MB |
4 |
306 |
0 |
none |
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MISCELLANEOUS TECHNICAL NOTES |
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This controller can be purchased with several different BIOS revisions. The Super BIOS revision includes the following features not found in other revisions: ability to format bad tracks, dual controller operation, automatic configuration, virtual drive operation, and PC/AT compatibility. This controller has a built-in low-level format program. To enter the program run the DEBUG utility supplied with DOS and at the prompt enter: G=C800:5. |
