ASC-88 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	8-bit ISA
Card Size	Quarter-length, full-height card

CONNECTIONS
Function	Location	Function	Location
50-pin SCSI connector - external	CN1	Terminating resistors	RN1-RN3

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Power to external pull-ups disabled	BUS-PWR	Pins 1 & 2 closed
	+5V power to external pull-ups enabled	BUS-PWR	Pins 3 & 4 closed

SEGMENT ADDRESS SELECTION
Setting	A16	A15	A14
C000h	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
C400h	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
C800h	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
CC00h	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
D000h	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
D400h	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
D800h	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
DC00h	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
Note: A total of 8 segment address settings are available. The settings are a binary representation of the hexidecimal segment addresses. A16 is the Most Significant Bit and switch A14 is the Least Significant Bit. The jumpers have the following decimal values: A16=1000h, A15=800h, and A14=400h. Turn off the jumpers by closing pins 1 & 2 and turn on the jumpers by closing pins 2 & 3. Add the values of the jumpers with pins 2 & 3 closed to obtain the correct memory address. (Pins 1 & 2 = Off, Pins 2 & 3 = On.)