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AHA-1540

Data bus: 16-bit ISA
Size: Full-length, full-height card
Hard drive supported: Up to seven SCSI drives
Floppy drives supported: None

CONNECTIONS
Function Location
50-pin SCSI connector - internal CN1
2-pin connector - drive active LED LED

 
USER CONFIGURABLE SETTINGS
Function Location Setting
Synchronous negotiation disabled J1/A open
     Synchronous negotiation enabled J1/A closed
Factory configured - do not alter J1/B open
Parity enabled J1/C open
     Parity disabled J1/C closed
Wait state disabled J4 N/A
     Wait state enabled J4 N/A

 
SCSI ADDRESS CONFIGURATION
Address J1/D J1/E J1/F
7 open open open
     0 closed closed closed
     1 open closed closed
     2 closed open closed
     3 open open closed
     4 closed closed open
     5 open closed open
     6 closed open open

 
DMA CHANNEL SELECTION
Channel J1/G J1/H J6/A J6/B J6/C
5 open closed open closed open
     0 closed closed closed open open
     6 closed open open open closed
     7 open open open open open

 
DMA CHANNEL SELECTION (continued)
Channel J6/D J7/A J7/B J7/C J7/D
5 open open closed open open
     0 open closed open open open
     6 open open open closed open
     7 closed open open open closed

 
AT INTERRUPT SELECTION
IRQ J1/I J1/J J1/K J8/A J8/B
11 open closed open open open
     9 open open open closed open
     10 closed open open open closed
     12 closed closed open open open
     14 open open closed open open
     15 closed open closed open open
Not defined open closed closed N/A N/A
Not defined closed closed closed N/A N/A

 
AT INTERRUPT SELECTION (continued)
IRQ J8/C J8/D J8/E J8/F
11 closed open open open
     9 open open open open
     10 open open open open
     12 open closed open open
     14 open open closed open
     15 open open open closed

 
PORT ADDRESS SELECTION
Address J9/A J9/B J9/C J9/D J9/E J9/F J9/G J9/H
330h open open closed closed open open closed closed
     004h closed open open open open open open open
     008h open closed open open open open open open
     010h open open closed open open open open open
     020h open open open closed open open open open
     040h open open open open closed open open open
     080h open open open open open closed open open
     100h open open open open open open closed open
     200h open open open open open open open closed

 
AT BIOS ADDRESS SELECTION
Address J10/A J10/B J10/C
DC000h open open open
     C8000h closed open closed
     D8000h open open closed
     CC000h closed open open

 
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