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DTC2278D+ (400537-89A)

DATA TECHNOLOGY CORPORATION

DTC2278D+ (400537-89A)

Card Type

Hard drive controller card

Hard drives supported

Four IDE(AT) interface drives

Floppy drives supported

Two 360KB, 720KB, 1.2MB, 1.44MB drives

Data-bus

32-bit VESA Local Bus

Size

Full-length, half-height card

CONNECTIONS

Function

Label

Function

Label

25-pin parallel port - external

J1

34-pin control cable connector - floppy drive

J5

10-pin serial port 2 - internal

J2

40-pin IDE(AT) secondary interface connector

J6

9-pin serial port 1 - external

J3

40-pin IDE(AT) primary interface connector

J7

16-pin game port - internal

J4

Drive active LED

J8

USER CONFIGURABLE CONNECTIONS

Function

Location

Setting

Game port enabled

W14

Closed

 

Game port disabled

W14

Open

SERIAL PORT 1 ADDRESS SELECTION

Setting

W5

W6

COM1 (3F8h)

Pins 1 & 2 closed

Pins 2 & 3 closed

 

COM3 (3E8h)

Pins 2 & 3 closed

Pins 1 & 2 closed

 

Disabled

Pins 1 & 2 closed

Pins 1 & 2 closed

SERIAL PORT 2 ADDRESS SELECTION

Setting

W3

W4

COM2 (2F8h)

Pins 1 & 2 closed

Pins 2 & 3 closed

 

COM4 (2E8h)

Pins 2 & 3 closed

Pins 1 & 2 closed

 

Disabled

Pins 1 & 2 closed

Pins 1 & 2 closed

PARALLEL PORT ADDRESS SELECTION

Setting

W1

W2

LPT1 (378h)

Pins 2 & 3 closed

Pins 1 & 2 closed

LPT2 (278h)

Pins 1 & 2 closed

Pins 2 & 3 closed

LPT3 (3BCh)

Pins 2 & 3 closed

Pins 2 & 3 closed

Disabled

Pins 1 & 2 closed

Pins 1 & 2 closed

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

W19

W20

W21

 

IRQ3

Open

Closed

Open

IRQ4

Open

Open

Closed

 

IRQ5

Closed

Open

Open

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

W16

W17

W18

IRQ3

Open

Open

Closed

 

IRQ4

Open

Closed

Open

 

IRQ5

Closed

Open

Open

PARALLEL PORT INTERRUPT SELECTION

IRQ

W12

W13

 

IRQ5

Closed

Open

IRQ7

Open

Closed

MISCELLANEOUS TECHNICAL NOTES

The parallel port on the DTC2278D+ only supports bidirectional mode.