WD1003-RAH, WD1003-WAH Hard Disk/Floppy Controller Settings and Configuration

CONNECTIONS
Function	Location
34-pin data cable connector-hard drive	J1
20-pin data cable connector-drive 0	J2
20-pin data cable connector-drive 1	J3
4-pin connector-drive active LED	J6

USER CONFIGURABLE SETTING - WD1003-RAH
Function		Location	Setting
»	Auto deselect enabled (PC/AT)	W1	closed
	Auto deselect disabled (Compaq)	W1	open
»	Hard drive port address is 1F0-1F7 & 3F0-3F7h	W2	open
	Hard drive port address is 170-177 & 370-377h	W2	closed
	WD11C00C-22 chip at U8 or if W5/pins 2-3 closed	W3	open
	WD11C00-22 chip at U8 & W5/pins 1-2 closed	W3	closed
»	Drive 0 translation disabled	W4	pins 2 & 3 closed
	Drive 0 translation enabled	W4	pins 1 & 2 closed
»	Write gate and drive select lines enabled only when drive is accessed	W5	pins 2 & 3 closed
	Write gate and drive select lines are disabled during power-up and when +5V is < +4.15V	W5	pins 1 & 2 closed
»	Drive 1 logical translation disabled	W6	pins 2 & 3 closed
	Drive 1 logical translation enabled	W6	pins 1 & 2 closed

USER CONFIGURABLE SETTINGS - WD1003-WAH
Function		Location	Setting
»	Auto deselect enabled (PC/AT)	W1	closed
	Auto deselect disabled (Compaq)	W1	open
»	Hard drive port address is 1F0-1F7 & 3F0-3F7	W2	open
	Hard drive port address is 170-177 & 370-377	W2	closed
	WD11C00A-22 chip at U8 or if W5/pins 2-3 closed	W3	open
	WD11C00-22 chip at U8 & W5/pins 1-2 closed	W3	closed
»	Ties firmware sense bit high	W4	pins 2 & 3 closed
	Supports 2 head, 612 cyl. second drive with tandard system setup for 4 head, 306 cyl. drive	W4	pins 1 & 2 closed
»	Write gate and drive select lines enabled only when drive is accessed	W5	pins 2 & 3 closed
	Write gate and drive select lines are disabled during power-up and when +5V is < +4.15V	W5	pins 1 & 2 closed
»	Ties input high, 35 m	W6	pins 2 & 3 closed
	Ties input low, 16 m	W6	pins 1 & 2 closed