ACB-2320B Hard Disk/Floppy Controller Settings and Configuration

Data bus:	16-bit, ISA
Size:	Full-length, full-height card
Hard drives supported:	Two RLL ESDI drives
Floppy drives supported:	None

CONNECTIONS
Function	Location
20-pin data cable connector-drive 0	J1
20-pin data cable connector-drive 1	J2
34-pin control cable connector-hard drive	J3
4-pin connector-drive active LED	J4

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Hard drive address 1F0-1F7h	J5/jumper 1	open
	Hard drive address 170-177h	J5/jumper 1	closed
»	Zero wait state enabled	J5/jumper 3	open
	Zero wait state disabled	J5/jumper 3	closed
»	Read ahead cache enabled	J5/jumper 5	open
	Read ahead cache disabled	J5/jumper 5	closed
»	Hard Drive Interrupt is IRQ14	J12	pins 1 & 2 closed
	Hard Drive Interrupt is IRQ15	J12	pins 2 & 3 closed
	Not used	J12	pins 3 & 4 open
»	BIOS address C800h	J13	pins 1 & 2 closed
	BIOS address CC00h	J13	pins 2 & 3 closed
	BIOS disabled	J13	open

MISCELLANEOUS TECHNICAL NOTES

J5/jumpers 2, 4, 6 & 7 are Not used.