UN-1085 Hard Disk/Floppy Controller Settings and Configuration

Data bus:	32-bit VL-Bus
Size:	Three/quarter-length, full-height card
Hard drive supported:	Four IDE (AT) interface drives
Floppy drives supported:	Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS
Function	Location
40-pin Primary IDE (AT) interface connector	CN1
40-pin Secondary IDE (AT) interface connector	CN2
34-pin control cable connector - floppy drive	CN3
16-pin game port - internal	CN4
10-pin serial port - internal	COMA
10-pin serial port - internal	COMB
2-pin connector - drive active LED	LED1
25-pin parallel port - external	P1

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Factory configured - do not alter	W1	N/A
»	Factory configured - do not alter	W2	N/A
»	Factory configured - do not alter	W3	N/A
»	Factory configured - do not alter	W4	N/A
»	Factory configured - do not alter	W5	N/A
	IOCHRDY 759AF select	W6/pins 2 & 3	closed
	IOCHRDY ISA select	W6/pins 1 & 2	closed
»	Primary IDE (AT) interface enabled	W8/pins 2 & 3	closed
	Primary IDE (AT) interface disabled	W8/pins 1& 2	closed
»	Secondary IDE (AT) interface enabled	W9/pins 2 & 3	closed
	Secondary IDE (AT) interface disabled	W9/pins 1 & 2	closed
»	Speed 50MHz select	W10/pins 2 & 3	closed
	Speed 33MHz select	W10/ pins 1 & 2	closed
»	Factory configured - do not alter	W13	N/A
»	Floppy drive address is 3F0h-3F7h	W21	open
	Floppy drive address is 370h-377h	W21	closed
»	Floppy controller enabled	W22	open
	Floppy controller disabled	W22	closed
»	Parallel port output only select	W23	closed
	Parallel port bi-directional select	W23	open
»	Game port enabled	W24	open
	Game port disabled	W24	closed
»	Parallel port address is 378h	W25	open
	Parallel port address is 278h	W25	closed
»	COMA address is 3F8h	W26	open
	COMA address is 3E8h	W26	closed
»	COMA enabled	W27	open
	COMA disabled	W27	closed
»	Parallel port enabled	W28	open
	Parallel port disabled	W28	closed
»	COMB address is 2F8h	W29	open
	COMB address is 2E8h	W29	closed
»	COMB enabled	W30	open
	COMB disabled	W30	closed

IDE (AT) TIMMING & MODE CONFIGURATION
Timming	Mode	W11	W12
240ns	3	pins 1 & 2 closed	pins 1 & 2 closed
400ns	2	pins 1 & 2 closed	pins 2 & 3 closed
500ns	1	pins 2 & 3 closed	pins 1 & 2 closed
600ns	0	pins 2 & 3 closed	pins 2 & 3 closed

HARD DRIVE DMA SELECTION
Channel	W14	W15	W16	W17	W18	W19
5	open	open	closed	open	open	closed
6	open	closed	open	open	closed	open
7	closed	open	open	closed	open	open

SERIAL PORT 1 INTERRUPT SELECTION
IRQ		W36	W37	W38
»	4	closed	open	open
	3	open	closed	open
	5	open	open	closed

SERIAL PORT 2 INTERRUPT SELECTION
IRQ		W39	W40	W41
»	3	closed	open	open
	4	open	closed	open
	5	open	open	closed

PARALLEL PORT INTERRUPT SELECTION
IRQ		W42	W43
»	7	closed	open
	5	open	closed