AHA-3980, AHA-3985 Hard Disk/Floppy Controller Settings and Configuration

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.