WD1003A-WA2 Hard Disk/Floppy Controller Settings and Configuration

Chipset	Western Digital
Data Bus	16-bit ISA
Card Size	Full height, full length
Hard Drives Supported	Two ST506/412(MFM) devices
Floppy Drives Supported	Two 360KB or 1.2MB drives

CONNECTIONS
Function	Label	Function	Label
2-pin drive active LED	J1	34-pin control cable connector - hard drive	J4
20-pin data cable connector - drive 2	J2	34-pin cable connector - floppy drive	J5
20-pin data cable connector - drive 1	J3

USER CONFIGURABLE SETTINGS
Setting		Label	Position
»	Factory configured - do not alter	W1	Pins 1 & 2 closed
»	Factory configured - do not alter	W2/A	Open
»	Factory configured - do not alter	W2/B	Open
»	Factory configured - do not alter	W2/C	Open
»	RWC-NOT signal enabled	W5	Pins 1 & 2 closed
	RWC-NOT signal disabled, HS3-NOT signal enabled	W5	Pins 2 & 3 closed
»	Factory configured - do not alter	W6	Unidentified
»	Factory configured - do not alter	W7	Open
Note:W6 may not be present on all versions of this board.

HARD DRIVE 1 TYPE SELECTION
Setting		W3
»	Standard	Pins 1 & 2 closed
	SyQuest	Pins 1 & 2 open

HARD DRIVE 2 TYPE SELECTION
Setting		W3
»	Standard	Pins 3 & 4 closed
	SyQuest	Pins 3 & 4 open

HARD DRIVE ADDRESS SELECTION
Setting		W4
»	Primary	Pins 3 & 5 closed
	Secondary	Pins 1 & 3 closed

FLOPPY DRIVE ADDRESS SELECTION
Setting		W4
»	Primary	Pins 4 & 6 closed
	Secondary	Pins 2 & 4 closed