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"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1230 and 1232
IRQ4 Serial Port (COM1)
IRQ5 Audio Controller
IRQ6 Diskette Drive
IRQ7 Parallel Port (LPT 1) (default)
IRQ8 System CMOS/Real-Time Clock
IRQ9 Video Controller
IRQ9 IRQ Holder for PCI Steering
IRQ10 PCI-1221 CardBus Controller
IRQ10 PCI-1221 CardBus Controller
IRQ10 IRQ Holder for PCI Steering
IRQ11 Compaq PCI to USB Open Host Controller
IRQ11 IRQ Holder for PCI Steering
IRQ12 PS/2 TouchPad/Mouse
IRQ13 Numeric processor
IRQ14 Primary IDE Controller
IRQ15 Secondary IDE Controller
System DMA
System DMA
Hardware DMA System Function
DMA 1 Audio Controller
DMA 2 Diskette Drive
DMA 4 DMA Controller
DMA 5 Audio Controller
System I/O Address
System I/O Address
I/O Address (Hex) System Function (Shipping Configuration)
0000h-000Fh DMA Controller # 1
0020h-0021h Interrupt Controller # 1
0022h-0023h Motherboard resources
0040h-0043h System timer
0060h-0060h Keyboard Controller
0061h-0061h System speaker
0064h-0064h Standard 101/102-Key or Microsoft Natural Keyboard
0070h-0071h System CMOS/real time clock
0081h-008Fh DMA Controller
0092h-0092h Motherboard resources
00A0h-00A1h Programmable interrupt controller
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