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RARE VINTAGE DATA TECHNOLOGY 5287 CR 16 BIT ISA RLL FLOPPY HARD DRIVE CONTROLLER.Video card only. Manual and Drivers NOT included.
** USA Seller **LAST 1! Compare to $75 on for older model!!
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DATA TECHNOLOGY CORPORATION
DTC5287CR, DTC5287I, DTC7287
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
CONNECTIONS
Function
Location
34-pin data cable connector-floppy drive
J1
34-pin control cable connector-hard drive
J2
20-pin data cable connector-drive 0
J3
20-pin data cable connector-drive 1
J4
4-pin connector-drive active LED
J5
USER CONFIGURABLE SETTINGS
Function
Location
Setting
»
Floppy drive data transfer rate is 500KHz
W4
open
Floppy drive data transfer rate is 250KHz
W4
closed
»
Hardware drive select mode
(drive number is driven directly to the interface)
W5
closed
Firmware drive select mode
(drive number is intercepted by controller firmware)
W5
open
»
Auto-deselect enabled
W6
closed
Auto-deselect disabled
W6
open
»
Floppy drive precompensation scaled by data rate:
500KHz=125ns, 300KHz=208ns, 250KHz=250ns
W7
open
Floppy drive precompensation is 125ns
W7
closed
»
Factory configured - do not alter
W8
closed
»
BIOS address is C800h
W9
open
BIOS address is D800h
W9
closed
»
BIOS enabled
W10
closed
BIOS disabled
W10
open
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