DATA TECHNOLOGY CORPORATION

DTC-2278S/D (900140-89B)

Card Type

Hard drive controller card

Hard Drives supported

Two IDE (AT) drives

Floppy drives supported

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

Data Bus

32-bit VESA Local Bus

Card Size

Full-length, half-height card

CONNECTIONS

Function

Location

Function

Location

9-pin serial port 1 - external

CN1

34-pin cable connector - floppy drive

J5

25-pin parallel port - external

CN2

40-pin secondary IDE(AT) connector

J6

10-pin serial port 2 - internal

J2

40-pin primary IDE(AT) connector

J7

16-pin game port

J4

4-pin connector - drive active LED

J8

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Floppy drive interface enabled

W7

Pins 2 & 3 closed

 

Floppy drive interface disabled

W7

Pins 1 & 2 closed

»

Game port enabled

W8

Closed

 

Game port disabled

W8

Open

»

Parallel port is uni-directional

W17

Closed

 

Parallel port is bi-directional

W17

Open

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 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

 

COM4 (2E8h)

Pins 2 & 3 closed

Pins 2 & 3 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

 

COM3 (3E8h)

Pins 2 & 3 closed

Pins 2 & 3 closed

 

COM4 (2E8h)

Pins 2 & 3 closed

Pins 1 & 2 closed

 

Disabled

Pins 1 & 2 closed

Pins 1 & 2 closed

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

W14

W15

W16

 

IRQ3

Open

Closed

Open

»

IRQ4

Open

Open

Closed

 

IRQ5

Closed

Open

Open

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

W11

W12

W13

»

IRQ3

Open

Open

Closed

 

IRQ4

Open

Closed

Open

 

IRQ5

Closed

Open

Open

PARALLEL PORT INTERRUPT SELECTION

IRQ

W9

W10

 

IRQ5

Closed

Open

»

IRQ7

Open

Closed

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