WD1002S-WX2 Hard Disk/Floppy Controller Settings and Configuration

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

USER CONFIGURABLE SETTINGS
Function		Location	Setting
	Reserved for BIOS	SW1/8	open
	Reserved for BIOS	SW1/7	open
	Reserved for BIOS Virtual option	SW1/6	open
	Reserved for BIOS Auto-config option	SW1/5	open
»	Normal operation	W1	pins 1 & 2 closed
	Factory test	W1	pins 2 & 3 closed
»	Normal operation	W2	pins 1 & 2 closed
	Factory test	W2	pins 2 & 3 closed
»	BIOS enabled	W3	closed
	BIOS disabled	W3	open
»	I/O port address 320h	W4	pins 2 & 3 closed
	I/O port address 324h	W4	pins 1 & 2 closed
»	BIOS size 32K or 64K (hard-wired)	W5	pins 1 & 2 closed
	BIOS size 16K	W5	pins 2 & 3 closed
»	8 Head hard drive with RWC supported	W6	pins 2 & 3 closed
	16 head hard drive supported (Head Select 3)	W6	pins 1 & 2 closed
»	Hard Drive Interrupt is IRQ5 (hard-wired)	W7	pins 1 & 2 closed
	Hard Drive Interrupt is IRQ2	W7	pins 2 & 3 closed

BIOS DRIVE TYPE TABLE - SW1 JUMPERS 1 AND 2 CONFIGURE DRIVE 1 JUMPERS 3 AND 4 CONFIGURE DRIVE 0
#	Jumper 1 & 3	Jumper 2 & 4	Cap.	Hds.	Cyls.	WP	RWC
0	closed	closed	21MB	4	612	613	613
1	open	closed	10MB	2	612	128	128
2	closed	open	21MB	4	612	128	613
3	open	open	10MB	4	306	all (0)	306

MISCELLANEOUS TECHNICAL NOTES

This controller has a built-in low-level format program. To enter the program run the DEBUG utility supplied with DOS and at the prompt enter: G=C800:5.