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AHA-1740/AHA-1742A (VER. 2) Hard Disk/Floppy Controller Settings and Configuration






ADAPTEC, INC.

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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