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