Card Type	Hard drive controller card
Hard Drives supported	Two ESDI drives
Floppy drives supported	Two 360KB, 720KB, 1.2MB, or 1.44MB
Data Bus	16-bit ISA
Card Size	Three-quarter length, full-height card

CONNECTIONS
Function	Location	Function	Location
34-pin control cable connector-hard drive	J1	34-pin data cable connector-floppy drive	J4
20-pin data cable connector-drive 0	J2	4-pin connector-drive active LED	J5
20-pin data cable connector-drive 1	J3

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured (BIOS enabled)	W3	Closed
»	Factory configured (floppy drive controller)	W4	Open
»	Factory configured (single spindle speed select)	W5	Open
»	Floppy drive port address is 3F0-3F7h	W6	Pins 2 & 3 closed
	Floppy drive port address is 370-377h	W6	Pins 1 & 2 closed
»	Factory configured (floppy drive select)	W7	Pins 1 & 2 closed
»	WD1007 emulation mode	W8	Open
	WD1005 emulation mode	W8	Closed
»	Factory configured (chassis ground disconnected)	W9	Open
»	Digital input register unlatched	W10	Open
	Digital input register latched	W10	Closed
»	Factory configured (floppy change enable with FDC option)	W11	Closed
»	Factory configured (secondary address select)	W12	Open
»	Floppy controller enabled (diskette drive controller enabled in etch)	W13	Uncut
»	Sector translation enabled	W14	Open
	Sector translation disabled	W14	Closed
»	Factory configured (ECC length is 4 bytes)	W15	Open

BIOS ADDRESS SELECTION
Address		W1	W2
»	C8000-C9FFFh	Pins 2 & 3 closed	Pins 2 & 3 closed
	CA000-CBFFFh	Pins 2 & 3 closed	Pins 1 & 2 closed
	CC000-CDFFFh	Pins 1 & 2 closed	Pins 2 & 3 closed
	CE000-CFFFFh	Pins 1 & 2 closed	Pins 1 & 2 closed

MISCELLANEOUS TECHNICAL INFORMATION

The WD1007A supports 1:1 interleave drives with up to 2048 cylinders and 16 heads.