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AHA-1542CF, AHA-1540CP, AHA-1542CF, AHA-1542CP

Data bus: 16-bit, ISA
Size: Half-length, full-height card
Hard drive supported: Up to seven SCSI drives
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS
Function Location
50-pin SCSI connector - internal CN1
50-pin SCSI connector - external CN2
34-pin control cable connector - floppy drive CN3
4-pin connector - drive active LED CN4

 
USER CONFIGURABLE SETTINGS
Function Location Setting
SCSI Termination set through software SW1/1 off
     SCSI Termination enabled SW1/1 on
Floppy drive enabled SW1/5 off
     Floppy drive disabled SW1/5 on

 
I/O PORT ADDRESS SELECTION
Address SW1/2 SW1/3 SW1/4
330-333h off off off
     334-337h on off off
     230-233h off on off
     234-237h on on off
     130-133h off off on
     134-137h on off on
     Reserved off on on
     Reserved on on on

 
BIOS ADDRESS SELECTION
Address SW1/6 SW1/7 SW1/8
DC000h off off off
     D8000h on off off
     D4000h off on off
     D0000h on on off
     CC000h off off on
     C8000h on off on
     Reserved off on on
     Disabled on on on

 

AHA-1740/AHA-1742A (VER. 2)

Data bus: 32-bit EISA
Size: Three-quarter length, Full-height card
Hard drive supported: Up to fourteen SCSI devices
Floppy drives supported: 360KB, 720KB, 1.2MB, 1.44MB

CONNECTIONS
Function Location
50-pin SCSI interface - external CN1
50-pin SCSI interface - internal CN2
34-pin control cable connector - floppy drive CN3
Terminating resistor 1 RN5
Terminating resistor 2 RN6
Terminating resistor 3 RN7

 
USER CONFIGURABLE SETTINGS
Function Location Setting
Factory configured - do not alter JP1/A N/A
Factory configured - do not alter JP1/B N/A
Factory configured - do not alter JP1/C N/A
Factory configured - do not alter JP1/D N/A
Floppy drive primary address select JP1/E open
     Floppy drive alternate address select JP1/E closed
Floppy drive interface enabled JP1/F closed
     Floppy drive interface disabled JP1/F open
TERMPWR supplied by host interface JP2 closed
     TERMPWR not supplied by host interface JP2 open

 
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