Data bus:

32-bit, VL-bus

Size:

Three/quarter-length, full-height card

Hard drive supported:

Up to seven SCSI devices

Floppy drives supported:

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

CONNECTIONS

Function

Location

4-pin connector-Drive active LED

J1

34-pin control cable connector-floppy drive

J2

50-pin SCSI connector - internal

J3

50-pin SCSI connector - external

J4

SCSI ID

ID

SW1/switch 1

SW1/switch 2

SW1/switch 3

0

off

off

off

1

on

off

off

2

off

on

off

3

on

on

off

4

off

off

on

5

on

off

on

6

off

on

on

»

7

on

on

on

USER CONFIGURABLE SETTINGS

Function

Location

Setting

»

SCSI parity check enabled

SW1/switch 4

on

SCSI parity check disabled

SW1/switch 4

off

»

Hard drive capacity > 1GB disabled

SW1/switch 5

on

Hard drive capacity > 1GB enabled

SW1/switch 5

off

»

SCSI synchronous negotiation disabled

SW1/switch 6

on

SCSI synchronous negotiation enabled

SW1/switch 6

off

»

SCSI 5MB/sec data transfer rate enabled

SW1/switch 7

on

SCSI 10MB/sec data transfer rate enabled

SW1/switch 7

off

»

Floppy drive port address is 3F0-3F7h

W14

open

Floppy drive port address is 370-377h

W14

closed

»

Floppy drive enabled

W15 & W16

closed

Floppy drive disabled

W15 & W16

open

VL-BUS CLOCK SPEED CONFIGURATION

Clock Speed

SW1/switch 8

SW1/switch 9

SW1/switch 10

20MHz

on

on

off

25MHz

off

on

off

»

33 or 40MHz

on

on

on

50MHz

on

off

on

50i MHz

off

on

off

66i MHz

on

on

on

I/O PORT ADDRESS

Address

SW2/switch 1

SW2/switch 2

SW2/switch 3

130-133h

on

off

on

134-137h

on

off

off

230-233h

off

on

on

234-237h

off

on

off

»

330-333h

on

on

on

334-337h

on

on

off

BIOS ADDRESS

Address

SW2/switch 4

SW2/switch 5

»

DC000h

on

on

C8000h

off

off

D8000h

off

on

Disabled

on

off

HOST INTERRUPT REQUEST

IRQ

SW2/switch 6

SW2/switch 7

SW2/switch 8

9

on

off

on

10

off

on

on

»

11

on

on

on

12

off

off

on

14

on

on

off

15

off

on

off

HOST INTERRUPT CHANNEL

Channel

Jumper W3

Jumper W4

Jumper W5

Jumper W6

Jumper W7

Jumper W8

9

open

open

open

open

open

closed

10

open

open

open

open

closed

open

11

open

open

open

closed

open

open

»

12

open

open

closed

open

open

open

14

open

closed

open

open

open

open

15

closed

open

open

open

open

open

MISCELLANEOUS TECHNICAL NOTES

SW2/switch 9 and SW2/switch 10 are factory configured - do not alter