ACB-2372B Hard Disk/Floppy Controller Settings and Configuration

Data bus:	16-bit, ISA
Size:	Half-length, full-height card
Hard drives supported:	2 RLL ST506 drives
Floppy drives supported:	Two 360KB, 720KB, 1.2MB, or 1.44MB

CONNECTIONS
Function	Location
34-pin data cable connector-floppy drive	J1
20-pin data cable connector-drive 1	J3
20-pin data cable connector-drive 0	J4
34-pin control cable connector-hard drive	J5
3-pin connector-drive active LED	J6

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Hard drive address 1F0-1F7h	J2- 1	open
	Hard drive address 170-177h	J2- 1	closed
»	Floppy drive address 3F0-3F7h	J2- 2	open
	Floppy drive address 370-377h	J2- 2	closed
»	Zero wait state disabled	J2- 3	open
	Zero wait state enabled	J2- 3	closed
»	16msec step rate and recalibrate to 0	J2- 4	open
	35msec step rate and recalibrate to 0 minus 1	J2- 4	closed
»	Read ahead cache enabled	J2- 5	open
	Read ahead cache disabled	J2- 5	closed
»	Not used	J2-6	open
»	Not used	J2-7	open
»	BIOS address C800h	J7	pins 1 & 2 closed
	BIOS address CC00h	J7	pins 2 & 3 closed
	BIOS address disabled	J7/pin 2 to top pin	closed
»	Hard drive Interrupt is IRQ14	J13	pins 1 & 2 closed
	Hard drive Interrupt is IRQ15	J13	pins 2 & 3 closed
»	Floppy drive DMA Request is DREQ2	J20	pins 1 & 2 closed
	Floppy drive DMA Request is DREQ3	J20	pins 2 & 3 closed
»	Floppy drive DMA Acknowledge Is DACK2	J21	pins 1 & 2 closed
	Floppy drive DMA Acknowledge is DACK3	J21	pins 2 & 3 closed
»	Floppy drive Interrupt is IRQ6	J22	pins 1 & 2 closed
	Floppy drive Interrupt is IRQ10	J22	pins 2 & 3 closed