DATA TECHNOLOGY CORPORATION

DTC 2278E (400516-89A)

Data bus:

32-bit VL-Bus

Size:

Three/quarter-length, half-height card

Hard drive supported:

Two IDE(AT) or EIDE interface drives

Floppy drives supported:

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

CONNECTIONS

Function

Location

10-pin serial port 2 - internal

J2

9-pin serial port 1 - external

J3

16-pin game port

J4

34-pin cable connector - floppy drive

J5

40-pin connector - secondary IDE(AT) interface

J6

40-pin connector - primary IDE(AT) interface

J7

4-pin connector - drive active LED

J8

25-pin parallel port - external

J9

USER CONFIGURABLE SETTINGS

Function

Location

Setting

»

Game port enabled

W14

closed

 

Game port disabled

W14

open

PARALLEL PORT INTERRUPT

IRQ

W12

W13

»

IRQ7

open

closed

 

IRQ5

closed

open

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

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

 

COM4 (2E8h)

pins 2 & 3 closed

pins 2 & 3 closed

 

Disabled

pins 1 & 2 closed

pins 1 & 2 closed

Note: 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

 

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

Note: COM1 & COM3 are automatically configured to IRQ4.

COM2 & COM4 are automatically configured to IRQ3.

PARALLEL PORT MODE CONFIGURATION

Mode

W7

W22

»

Printer

pins 2 & 3 closed

pins 2 & 3 closed

 

ECP

pins 2 & 3 closed

pins 1 & 2 closed

 

EPP

pins 1 & 2 closed

pins 2 & 3 closed

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

DMA SELECTION

Channel

W8

W9

W10

W11

1

closed

open

closed

open

3

open

closed

open

closed

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.

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