Microsoft user manual Table A.2 UNO-3074 Interrupt Assignments, Interrupt No Interrupt Source

Table A.1: UNO-3074 System I/O Port

3D0-3DF	Color/graphics monitor adapter
3F0-3F7	Diskette controller
3E8-3EF	Serial port 3
3F8-3FF	Serial port 1
443	Watchdog timer
DC000-DFFFF	Battery backup resource

Table A.2: UNO-3074 Interrupt Assignments

Interrupt No.	Interrupt Source
IRQ 0	Interval timer
IRQ 1	Keyboard
IRQ 2	Interrupt from controller 2 (cascade)
IRQ 3	COM2
IRQ 4	COM1
IRQ 5	COM4 (Independent IRQ)
IRQ 6	Diskette controller (FDC)
IRQ 7	DIO
IRQ 8	Real-time clock
IRQ 9	PCMCIA
IRQ 10	COM3 (Independent IRQ)/COM3&COM4 Share IRQ
IRQ 11	Reserved for watchdog timer
IRQ 12	PS/2 mouse
IRQ 13	INT from co-processor
IRQ 14	Primary IDE
IRQ 15	Secondary IDE

55 AppendixA