HBA-SA0 Hard Disk/Floppy Controller Settings and Configuration

Data Bus	8/16 bit ISA
Card Size	Full height, half length
Hard Drives Supported	Up to 7 SCSI devices
Floppy Drives Supported	None

CONNECTIONS
Function	Label	Function	Label
50-pin SCSI connector - internal	J1	1.5A fuse	F1
50-pin SCSI connector - external	J2	4-pin drive active LED	LED3
3-pin DC power out	J6

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	TERMPWR enabled	W1	Pins 1 & 2 closed
	TERMPWR disabled	W1	Pins 2 & 3 closed
»	Card uses 8-bit transfers	W5	Pins 1 & 2 closed
	Card uses 16-bit transfers	W5	Pins 2 & 3 closed

SOFTWARE SUPPORTED CONFIGURATIONS
BIOS Address	IRQ	DMA
C000h	10	6
C800h	11	6
D000h	12	7
D800h	10	5
Note:IRQ and DMA are BIOS address dependent and must be set in these combinations.

BIOS ADDRESS SELECTION
Setting		S3/7	S3/8
	C000h	On	On
	C800h	Off	On
	D000h	On	Off
»	D800h	Off	Off

DMA CHANNEL SELECTION
Setting		W2/A	W2/B	W2/C	W4/A	W4/B	W4/C
»	DMA5	Open	Open	Closed	Open	Open	Closed
	DMA6	Open	Closed	Open	Open	Closed	Open
	DMA7	Closed	Open	Open	Closed	Open	Open

INTERRUPT SELECTION
Setting		W3/A	W3/B	W3/C
»	IRQ10	Open	Open	Closed
	IRQ11	Open	Closed	Open
	IRQ12	Closed	Open	Open

DMA TRANSFER RATE
Transfer		DRAM	S3/1	S3/2	S3/3	S3/4	S3/5	S3/6
»	3.33MBps	200-250nS	Off	On	Off	On	Off	Off
	4.55MBps	150-200nS	Off	Off	On	On	On	Off
	5.56MBps	120-150nS	On	Off	On	Off	Off	On
	7.14MBps	80-120nS	Off	On	On	On	Off	On
	10MBps	40-80nS	On	On	On	Off	On	On
	12.5MBps	<40nS	On	On	On	On	On	On

SCSI TERMINATION
Setting	R1	R2	R3
Terminated	Installed	Installed	Installed
Not terminated	Not installed	Not installed	Not installed