WESTERN DIGITAL CORPORATION
WD1002A-WX1 (VER.1)
|
Data Bus |
8-bit |
|
Card Size |
Proprietary |
|
Hard Drives supported |
Two ST-506/412(MFM) drives |
|
Floppy drives supported |
None |
|
CONNECTIONS | |||
|
Function |
Location |
Function |
Location |
|
34-pin control cable connector-hard drive |
J1 |
5-pin connector-DC power |
J4 |
|
20-pin data cable connector-drive 0 |
J2 |
|
|
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
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 ROM size 32K or 64K (hard-wired) |
W5 |
pins 1 & 2 closed | |
|
BIOS ROM size 16K |
W5 |
pins 2 & 3 closed | |
|
8 head hard drive with RWC supported |
W6 |
pins 2 & 3 closed | |
|
16 head hard drive supported (head select 3) |
W6 |
pins 1 & 2 closed | |
|
Hard drive Interrupt is IRQ5 (hard-wired) |
W7 |
pins 1 & 2 closed | |
|
Hard drive Interrupt is IRQ2 |
W7 |
pins 2 & 3 closed | |
|
Single controller setting, primary controller |
W8 |
pins 2 & 3 closed | |
|
Dual controller setting, secondary controller |
W8 |
pins 1 & 2 closed | |
|
Factory configured - Do not alter |
S1/5 |
Open | |
|
Factory configured - Do not alter |
S1/6 |
Open | |
|
Factory configured - Do not alter |
S1/7 |
Open | |
|
Factory configured - Do not alter |
S1/8 |
Open | |
|
BIOS REVISION DRIVE TYPE TABLE | ||||||||||
|
Drive1 |
Drive 0 |
| ||||||||
|
# |
S1/1 |
S1/2 |
S1/3 |
S1/4 |
Cap. |
Hds |
Cyls. |
WP |
RWC | |
|
0 |
Closed |
Closed |
Closed |
Closed |
20 MB |
4 |
612 |
613 |
613 | |
|
1 |
Open |
Closed |
Open |
Closed |
10 MB |
2 |
612 |
128 |
128 | |
|
2 |
Closed |
Open |
Closed |
Open |
20 MB |
4 |
612 |
128 |
613 | |
|
3 |
Open |
Open |
Open |
Open |
10 MB |
4 |
306 |
0 |
306 | |
|
Note: S1/1 and S1/2 select the setting for drive1 & S1/3 and S1/4 select the setting for drive 0 | ||||||||||
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MISCELLANEOUS TECHNICAL NOTES |
|
Note: 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. Two additional jumpers may be present, W1 & W2, and are reserved for factory use and may not be changed. |