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1.
th99
DATA TECHNOLOGY CORPORATION DTC2280 (400548-89A)
Card TypeHard drive controller card
Hard drives supportedTwo IDE(AT) interface drives
Floppy drives supportedTwo 360KB, 720KB, 1.2MB, 1.44MB drives
Data-bus16-bit ISA
SizeHalf-length, half-height card


CONNECTIONS
FunctionLabelFunctionLabel
34-pin control cable connector - floppy driveJ19-pin serial port 1 - externalJ5
40-pin IDE(AT) interface connectorJ210-pin serial port 2 - internalJ6
Drive active LEDJ325-pin parallel port - externalJ7
16-pin game port - internalJ4  
USER CONFIGURABLE CONNECTIONS
FunctionLocationSetting
»Factory configured - do not alterW1Unidentified
»Floppy drive interface enabledW2Open
  Floppy drive interface disabledW2Closed
»Parallel port is uni-directionalW3Closed
  Parallel port is bi-directionalW3Open
»Game port enabledW4Closed
  Game port disabledW4Open
»Parallel port address is 378h (LPT1)W5Open
 Parallel port address is 278 (LPT2)W5Closed
»Serial port 1 address is 3F8hW6Open
 Serial port 1 address is 3E8hW6Closed
»Serial port 1 enabledW7Open
 Serial port 1 disabledW7Closed
»Parallel port enabledW8Open
 Parallel port disabledW8Closed
»Serial port 1 address is 2F8hW9Open
 Serial port 1 address is 2E8hW9Closed
»Serial port 2 enabledW10Open
 Serial port 2 disabledW10Closed
»IDE(AT) interface enabledW11Open
  IDE(AT) interface disabledW11Closed
CONNECTIONS (CONTINUED)
FunctionLocationSetting
 IDE(AT) interface address 170 - 177hW12Closed
 IDE(AT) interface address 1F0 - 1F7hW12Open
»IRQ 15 (secondary) disabledW13Closed
  IRQ 15 (secondary) enabledW13Open
»IRQ 14 (primary) enabledW14Open
  IRQ 14 (primary) disabledW14Closed
SERIAL PORT 1 INTERRUPT SELECTION
IRQW15W16W17
 IRQ3OpenClosedOpen
»IRQ4ClosedOpenOpen
 IRQ5OpenOpenClosed
SERIAL PORT 2 INTERRUPT SELECTION
IRQW18W19W20
»IRQ3ClosedOpenOpen
 IRQ4OpenClosedOpen
 IRQ5OpenOpenClosed
PARALLEL PORT INTERRUPT SELECTION
IRQW21W22
 IRQ5OpenClosed
»IRQ7ClosedOpen
(0)

timestamp 2026-10-18 13:49:36