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AHA-2940W

Data bus: PCI local-bus
Size: Half-length, full-height card
Hard drive supported: Up to seven SCSI devices
Floppy drives supported: None

CONNECTIONS
Function Location
4-pin connector - drive active LED J1
68-pin SCSI (Wide) connector – internal J2
50-pin SCSI connector – internal J3
68-pin SCSI (Wide) connector - external J6

 
USER CONFIGURABLE SETTINGS
Function Location Setting
TERMPWR disabled J4 open
     TERMPWR enabled J4 closed

 

AHA-2944W

Data bus: 32-bit PCI
Size: Half-length, full-height card
Hard drive supported: Up to fifteen SCSI-2 devices
Floppy drives supported: None

CONNECTIONS
Function Location
50-pin SCSI connector - internal J1
4-pin connector - drive active LED J2
68-pin SCSI connector - internal J3
68-pin SCSI connector - external J6

 
USER CONFIGURABLE SETTINGS
Function Location Setting
Termination power for J3, when power off enabled J4 closed
Termination power for J3, when power off disabled J4 open
Termination power for J1, when power off enabled J5 closed
Termination power for J1, when power off disabled J5 open
Low byte ∓ high byte set to off R1-R12 removed
Low byte ∓ high byte set to on R1-R12 installed
Low byte set to off, high byte set to on R9, R12, R3, R6 installed
R1, R2, R4, R5, R7, R8, R10, R11 removed

 
MISCELLANEOUS TECHNICAL NOTES
R1, R2, R9, R10, R11, R12 are 330-ohm. R3, R4, R5, R6, R7, R8 are 150-ohm.
When using only the 68-pin external connector low ∓ high bytes must be set to on.
When using the 68-pin internal ∓ external connectors or when using the 50-pin ∓ 68-pin internal connectors low byte must be set to off, high byte to on.
When using the 50-pin internal ∓ 68-pin external low ∓ high bytes must be set to off.

 

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.

 
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