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AHA-2840VL, AHA-2842VL

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
Note: Disabling the host adapter BIOS for non-disk devices such as CD-ROM drives, tape drives, will reduce boot up time.
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.

 
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