AHA-2840A Hard Disk/Floppy Controller Settings and Configuration

Card Type	Hard drive controller card
Hard Drives supported	Up to 7 SCSI devices
Floppy drives supported	None
Data Bus	32-bit VESA Local Bus
Card Size	Full-length, full-height card

CONNECTIONS
Function	Location	Function	Location
4-pin LED connector	J1	50-pin SCSI connector - external	J4
50-pin SCSI connector - internal	J3

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Write-back enabled	J5	Closed
	Write-back disabled	J5	Open
»	Factory configured - do not alter	S1/5	Reserved
»	Host adapter BIOS enabled	S1/8	Off
	Host adapter BIOS disabled	S1/8	On

I/O ADDRESS SELECTION
Address		S1/1	S1/2	S1/3	S1/4
»	1C00h	Off	Off	Off	Off
	2C00h	On	Off	Off	Off
	3C00h	Off	On	Off	Off
	4C00h	On	On	Off	Off
	5C00h	Off	Off	On	Off
	6C00h	On	Off	On	Off
	7C00h	Off	On	On	Off
	8C00h	On	On	On	Off
	9C00h	Off	Off	Off	On
	AC00h	On	Off	Off	On
	BC00h	Off	On	Off	On
	CC00h	On	On	Off	On
	DC00h	Off	Off	On	On
	EC00h	On	Off	On	On
	FC00h	Off	On	On	On
	Reserved	On	On	On	On

BIOS ADDRESS SELECTION
Address		S1/6	S1/7
	C8000h	On	Off
	D0000h	Off	On
»	D8000h	Off	Off
	E0000h	On	On