UNIDENTIFIED
EXPERT TOP HFDC
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Data bus: |
16-bit ISA |
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Size: |
Three/quarter-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, 1.44MB drives |
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CONNECTIONS | |
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Function |
Location |
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34-pin control cable connector - hard drive |
J1 |
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20-pin data cable connector - drive 1 |
J2 |
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20-pin data cable connector - drive 0 |
J3 |
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34-pin connector - floppy drive interface |
J4 |
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2-pin connector - drive active LED |
J6 |
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USER CONFIGURABLE SETTINGS | |||
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Function |
Location |
Setting | |
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Floppy drive interface operates at 360 RPM |
W1 |
pins 1 & 2 closed | |
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Floppy drive interface operates at 300 RPM |
W1 |
pins 2 & 3 closed | |
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Floppy drive is primary in system (3F2 - 3F7h) |
W4 |
pins 2 & 3 closed | |
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Floppy drive is secondary in system (372 - 377h) |
W4 |
pins 1 & 2 closed | |
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ST506/412(MFM) interface is primary in system (1F0 - 1F7h) |
W6 |
pins 2 & 3 closed | |
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ST506/412(MFM) interface is secondary in system (170 - 177h) |
W6 |
pins 1 & 2 closed | |