WESTERN DIGITAL CORPORATION
WD1003A-RA2
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Data bus: |
16-bit, ISA |
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Size: |
Full-length, full-height card |
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Hard drive supported: |
Two MFM ST506/412 drives |
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Floppy drives supported: |
Two 360KB, 720KB, 1.2MB, or 1.44MB drives |
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Maximum heads/cyl.: |
16 heads and 2048 cylinders |
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CONNECTIONS | |
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Function |
Location |
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4-pin connector-drive active LED |
CN1 |
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20-pin data cable connector-drive 1 |
CN2 |
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20-pin data cable connector-drive 0 |
CN3 |
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34-pin control cable connector-hard drive |
CN4 |
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34-pin data cable connector-floppy drive |
CN5 |
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USER CONFIGURABLE SETTINGS | |||
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Function |
Location |
Setting | |
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WD11C00C-22 in socket U16 |
JP1 |
pins 1 & 2 closed | |
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WD11C00-22 in socket U8 & JP5 pins 1 & 2 closed |
JP1 |
pins 2 & 3 closed | |
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Logical translation for drive 0 disabled |
JP2 |
open | |
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Logical translation for drive 0 enabled |
JP2 |
closed | |
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Logical translation for drive 1 disabled |
JP2A |
open | |
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Logical translation for drive 1 enabled |
JP2A |
closed | |
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Not used |
JP2B |
open | |
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Factory configured - do not alter |
JP3 & JP3A |
closed | |
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Hard drive port address is 1F0-1F7h |
JP4 |
pins 2 & 3 closed | |
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Hard drive port address is 170-177h |
JP4 |
pins 1 & 2 closed | |
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Floppy drive port address is 3F0-3F7h |
JP4A |
pins 2 & 3 closed | |
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Floppy drive port address is 370-377 |
JP4A |
pins 1 & 2 closed | |
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8 head hard drive or RWC (hard-wired) |
JP5 |
pins 1 & 2 closed | |
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16 head hard drive supported |
JP5 |
pins 2 & 3 open | |
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Supports 300 or 360 RPM floppy disk drives |
JP7 |
pins 2 & 3 closed | |
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Supports dual speed spindle floppy drives |
JP7 |
pins 1 & 2 closed | |