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AHA-3980, AHA-3985

ADAPTEC, INC.

AHA-3980, AHA-3985

Data Bus

32-bit PCI

Card Size

Three-quarter length, full-height card

Card Drives supported

Up to 14 Fast SCSI devices (model AHA-3980)

Up to 21 Fast SCSI devices (model AHA-3985)

Floppy drives supported

None

   

CONNECTIONS

Function

Location

Function

Location

50-pin SCSI channel A connector - external

J1

50-pin SCSI channel B connector - internal

J9

4-pin connector - drive active LED

J6

50-pin SCSI channel C connector - internal (model AHA-3985 only)

J10

50-pin SCSI channel A connector - internal

J8

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

Channel A bus is connected to one computer only

J2

Open

 

Channel A bus is shared by two computers

J2

Closed

Channel B bus is connected to one computer only

J3

Open

 

Channel B bus is shared by two computers

J3

Closed

Channel C bus is connected to one computer (AHA-3985 only)

J4

Open

 

Channel C bus is shared by two computers (AHA-3985 only)

J4

Closed

Host computer supports PCI interrupts A, B, C, & D

J13

Open

 

Host computer supports PCI interrupts A & B only

J13

Closed

MISCELLANEOUS TECHNICAL NOTES

Jumpers J2, J3 and J4 enable other adapter cards on different computers to share devices on

channels A, B, or C (model AHA-3985) with this adapter card. Device access is sequential.