DATA TECHNOLOGY CORPORATION
DTC5287CR, DTC5287I, DTC7287
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Data bus: 16-bit, ISA
Size: Full-length, full-height card
Hard drives supported: Two RLL ST506/412 drives with 17,32, or 60 sector mapping
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB
Sector interleave: DTC5287CR: 1:1
DTC5287i: 2:1
DTC7287: 1:1
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CONNECTIONS | |
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Function |
Location |
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34-pin data cable connector-floppy drive |
J1 |
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34-pin control cable connector-hard drive |
J2 |
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20-pin data cable connector-drive 0 |
J3 |
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20-pin data cable connector-drive 1 |
J4 |
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4-pin connector-drive active LED |
J5 |
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USER CONFIGURABLE SETTINGS | |||
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Function |
Location |
Setting | |
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Floppy drive data transfer rate is 500KHz |
W4 |
open | |
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Floppy drive data transfer rate is 250KHz |
W4 |
closed | |
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Hardware drive select mode (drive number is driven directly to the interface) |
W5 |
closed | |
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Firmware drive select mode (drive number is intercepted by controller firmware) |
W5 |
open | |
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Auto-deselect enabled |
W6 |
closed | |
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Auto-deselect disabled |
W6 |
open | |
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Floppy drive precompensation scaled by data rate: 500KHz=125ns, 300KHz=208ns, 250KHz=250ns |
W7 |
open | |
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Floppy drive precompensation is 125ns |
W7 |
closed | |
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Factory configured - do not alter |
W8 |
closed | |
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BIOS address is C800h |
W9 |
open | |
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BIOS address is D800h |
W9 |
closed | |
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BIOS enabled |
W10 |
closed | |
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BIOS disabled |
W10 |
open | |
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HARD DRIVE PORT ADDRESS | |||
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Address |
W2 |
W3 | |
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Port addresses are 1F0-1F7 3F2-3F7h |
open |
open | |
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Port addresses are 170-177 372-377h |
closed |
closed | |