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DTC3274VL (900176-89XX)

DATA TECHNOLOGY CORPORATION

DTC3274VL (900176-89XX)

Data bus:

32-bit VL-Bus

Size:

Three/quarter-length, half-height card

Hard drive supported:

Up to seven SCSI devices

Floppy drives supported:

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

CONNECTIONS

Function

Location

34-pin cable connector - floppy drive

JP5

50-pin SCSI connector - internal

JP7

50-pin SCSI connector - external

JP8

4-pin connector - drive active LED

JP10

SCSI ID SELECTION

SCSI ID

SW11

SW12

SW13

7

off

off

off

 

0

on

on

on

 

1

off

on

on

 

2

on

off

on

 

3

off

off

on

 

4

on

on

off

 

5

off

on

off

 

6

on

off

off

USER CONFIGURABLE SETTINGS

Function

Location

Setting

BIOS support 2 hard drives

JP1

open

 

BIOS support 3 or more hard drives

JP1

closed

Factory configured - do not alter

JP2

open

BIOS enabled

JP3

closed

 

BIOS disabled

JP3

open

Factory configured - do not alter

JP4

open

Factory configured - do not alter

JP6/pins 1 & 2

N/A

Active termination enabled

JP9

open

 

Active termination disabled

JP9

closed

Factory configured - do not alter

JP11/pins 2 & 3

N/A

Factory configured - do not alter

JP12

open

Factory configured - do not alter

JP13

open

Factory configured - do not alter

JP14

open

Factory configured - do not alter

JP15

open

CPU clock <=33MHz

SW1

off

 

CPU clock >33MHz

SW1

on

Factory configured - do not alter

SW8

N/A

Synchronous Negotiation disabled

SW14

on

 

Synchronous Negotiation enabled

SW14

off

Fast synchronous transfer disabled

SW15

on

 

Fast synchronous transfer enabled

SW15

off

Floppy disk controller enabled

SW16

off

 

Floppy disk controller disabled

SW16

on

SCSI parity enabled

SW17

off

 

SCSI parity disabled

SW17

on

Factory configured - do not alter

SW18

N/A

BASE I/O ADDRESS SELECTION

Address

SW2

SW3

330h

off

off

 

130h

on

on

 

230h

on

off

 

334h

off

on

BIOS ADDRESS SELECTION

Address

SW4

SW5

C800-CBFFh

off

off

 

CC00-CCFFh

off

on

 

D800-DBFFh

on

off

 

DC00-DFFFh

on

on

INTERRUPT SELECTION

IRQ

SW6

SW7

11

on

off

 

10

on

on

 

12

off

on

 

15

off

off

MISCELLANOUS TECHNICAL NOTES

DTC 3274VL can support floptical drives through an ASPI utility.