ACB-2370 Hard Disk/Floppy Controller Settings and Configuration

Data bus:	16-bit, ISA
Size:	Half-length, full-height card
Hard drives supported:	Two RLL ST506/412 drives
Floppy drives supported:	None

CONNECTIONS
Function	Location
20-pin data cable connector-drive 1	J1
20-pin data cable connector-drive 0	J2
34-pin control cable connector-hard drive	J3
3-pin connector-drive active LED	J5
Serial monitor output	J10

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Hard drive port address 1F0-1F7h	J6/jumper 1	open
	Hard drive port address 170-177h	J6/jumper 1	closed
»	Zero wait state enabled	J6/jumper 3	open
	Zero wait state disabled	J6/jumper 3	closed
»	35 m sec step rate and recalibrate to 0 minus 1	J6/jumper 4	open
	16 m sec step rate and recalibrate to 0	J6/jumper 4	closed
»	Serial monitor mode disabled	J6/jumper 6	open
	Serial monitor mode enabled (2400 baud)	J6/jumper 6	closed
»	Hard drive Interrupt is IRQ14	J13	pins 1 & 2 closed
	Hard drive Interrupt is IRQ15	J13	pins 2 & 3 closed
»	BIOS address C800h	J14	pins 1 & 2 closed
	BIOS address CC00h	J14	pins 2 & 3 closed
	BIOS disabled	J14	all pins open

MISCELLANEOUS TECHNICAL NOTES

Jumpers J6/jumper 2 and J6/jumper 5 are not used. Jumpers J4, J7, J8, J9, J11, J12 and J15 are for factory tests and should not be altered. Pins 3 & 4 on jumper J13 should never be closed. J13 or J14 should never have more than two pins closed at a time.