AHA-2840VL, AHA-2842VL Hard Disk/Floppy Controller Settings and Configuration

Data bus:

32-bit VL-Bus

Size:

Full-lengh, 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 floppy drive connector

J2

50-pin SCSI connector - internal

J3

50-pin SCSI connector - external

J4

USER CONFIGURABLE SETTINGS

Function

Location

Setting

»

Floppy drive enabled

S1/switch 5

off

Floppy drive disabled

S1/switch 5

on

»

Host adapter BIOS enabled

S1/switch 8

off

Host adapter BIOS disabled

S1/switch 8

on

I/O ADDRESS SELECTION

Address

S1/Switch 1

S1/Switch 2

S1/Switch 3

S1/Switch 4

»

1C000h

off

off

off

off

2C000h

on

off

off

off

3C000h

off

on

off

off

4C000h

on

on

off

off

5C000h

off

off

on

off

6C000h

on

off

on

off

7C000h

off

on

on

off

8C000h

on

on

on

off

9C000h

off

off

off

on

AC000h

on

off

off

on

BC000h

off

on

off

on

CC000h

on

on

off

on

DC000h

off

off

on

on

EC000h

on

off

on

on

Reserved

off

on

on

on

Reserved

on

on

on

on

BASE ADDRESS SELECTION

Address

S1/Switch 6

S1/Switch 7

D8000h

off

off

C8000h

on

off

D0000h

off

on

E0000h

on

on

MISCELLANEOUS TECHNICAL NOTES

Only single-ended SCSI devices can be connected to the AHA-2840VL/2842VL.