DATA TECHNOLOGY CORPORATION

DTC2278E (400518-89A)

Data Bus

32-bit VESA Local Bus

Card Size

Three-quarter length, half-height card

Hard Drives supported

Four IDE (AT) or EIDE drives

Floppy drives supported

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

CONNECTIONS

Function

Location

Function

Location

10-pin serial port 2 - internal

J2

40-pin secondary IDE(AT) connector

J6

9-pin serial port 1 - external

J3

40-pin primary IDE(AT) connector

J7

16-pin game port

J4

4-pin connector - drive active LED

J8

34-pin cable connector - floppy drive

J5

25-pin parallel port - external

J9

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Game port enabled

W14

Closed

 

Game port disabled

W14

Open

SERIAL PORT 1 ADDRESS SELECTION

COM

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

 

Notes: COM1 & COM3 are automatically configured to IRQ4. COM2 & COM4 are automatically configured

to IRQ3.

SERIAL PORT 2 ADDRESS SELECTION

COM

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

 

Notes: COM1 & COM3 are automatically configured to IRQ4. COM2 & COM4 are automatically

configured to IRQ3.

PARALLEL PORT ADDRESS SELECTION

LPT

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

PARALLEL PORT MODE CONFIGURATION

Mode

W7

W22

 

ECP

Pins 2 & 3 closed

Pins 1 & 2 closed

 

EPP

Pins 1 & 2 closed

Pins 2 & 3 closed

»

Printer

Pins 2 & 3 closed

Pins 2 & 3 closed

Note: You must select a DMA channel when using ECP mode.

DMA CONFIGURATION

Mode

W8

W9

W10

W11

 

1

Closed

Open

Closed

Open

»

3

Open

Closed

Open

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

IRQ

W12

W13

»

IRQ7

Open

Closed

 

IRQ5

Closed

Open

MISCELLANEOUS TECHNICAL NOTES

The floppy controller in automatically configured. When a cable is attached, it is enabled; when no cable is attached it is disabled.