Microsoft UNO-3074 user manual System I/O Address and Interrupt Assignments

Appendix A System Settings and Pin Assignments

A.1 System I/O Address and Interrupt Assignments

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

Address Range	Device
000-01F	DMA controller (slave)
020-03F	Interrupt controller 1 (master)
040-05F	8254 timer/counter
060-06F	8042 (keyboard controller)
070-07F	Real-time clock, non-maskable interrupt (NMI)
080-09F	DMA page register
0A0-0BF	Interrupt controller 2 (slave)
0C0-0DF	DMA controller (master)
0F0	Clear math co-processor
0F1	Reset math co-processor
0F8-0FF	Math co-processor
1D0	Vector address; for COM port share IRQ
1E0	Reserved
11E	Reserved
1F0-1F8	1st fixed disk
200-218	DI/O and counter
278-27F	Reserved
2E8-2EF	Serial port 4
2F8-2FF	Serial port 2
300-31F	Ethernet
360-36F	LPT2
378-37F	Parallel printer port 1 (LPT1)
380-38F	SDLC, bisynchronous 2
3A0-3AF	Bisynchronous 1
3B0-3BF	Monochrome display
3C0-3CF	Reserved

UNO-3074 User Manual 54