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.