Data bus: 16-bit, ISA
Size: Full-length, full-height card
Hard drives supported: Two ESDI RLL drives
Floppy drives supported: Four 360KB, 720KB, 1.2MB,or 1.44MB
Sector interleave: 1:1
Maximum heads/cyl.: 16 heads and 2048 cylinders
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USER CONFIGURABLE SETTINGS
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Function
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Location
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Setting
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Floppy drive port address is 3F0-3F7h
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W2
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open
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Floppy drive port address is 370-377h
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W2
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closed
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Hard drive port address is 1F0-1F7h
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W3
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open
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Hard drive port address is 170-177h
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W3
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closed
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Floppy enabled
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W5
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open
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Floppy drive disabled
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W5
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closed
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SPT-read from drive
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W16
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open
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SPT-calculate and set
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W16
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closed
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Cache disabled
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W17
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open
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Cache enabled
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W17
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closed
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Track Offset Cmd. and Data Strobe Offset disabled
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W18
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open
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Track Offset Cmd. and Data Strobe Offset enabled
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W18
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closed
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Single speed floppy drive supported
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W19
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open
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Dual speed floppy drive Supported
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W19
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closed
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Floppy connector (CN1) polarity active high
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W20
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pins 1 & 2 closed
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Floppy connector (CN1) polarity active low
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W20
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pins 2 & 3 closed
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Floppy connector (CN1) polarity active high
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W21
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pins 1 & 2 closed
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Floppy connector (CN1) polarity active low
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W21
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pins 2 & 3 closed
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BIOS enabled
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W25
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closed
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BIOS disabled
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W25
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open
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Chassis not grounded
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W28
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open
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Chassis grounded
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W28
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closed
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Note:W22, & W11-15 are not documented
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