Compaq 1670, 1675 IRQ3, IRQ4, IRQ5, IRQ6, IRQ7, IRQ8, IRQ9, IRQ10, IRQ10, IRQ11, IRQ11, IRQ11, IRQ11, IRQ11, IRQ12, IRQ13, IRQ14, IRQ14, IRQ15, IRQ15, (free), (free), (free)

"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1270, 1670, and 1675

IRQ3	Compaq Prosignia 56K-DF
IRQ4	Communications Port (COM1)
IRQ5	ES1869 Plug and Play Audio Drive
IRQ6	Standard Floppy Disk Controller
IRQ7	Printer Port (LPT1)
IRQ8	System CMOS / real-time clock
IRQ9	(free)
IRQ10	OPTi 82C861 PCI to USB Open Host Controller
IRQ10	IRQ Holder for PCI Steering
IRQ11	IRQ Holder for PCI Steering
IRQ11	IRQ Holder for PCI Steering
IRQ11	NeoMagic MagicGraph 128XD
IRQ11	Texas Instruments PCI-1131 CardBus Controller
IRQ11	Texas Instruments PCI-1131 CardBus Controller
IRQ12	Synaptics PS/2 TouchPad
IRQ13	Numeric data processor
IRQ14	Primary IDE controller (dual fifo)
IRQ14	Opti Viper Max Dual PCI IDE Controller
IRQ15	Secondary IDE controller (dual fifo)
IRQ15	Opti Viper Max Dual PCI IDE Controller

System DMA

	System DMA
Hardware DMA		System Function
0		ES1869 Plug and Play AudioDrive
1		ES1869 Plug and Play AudioDrive
2		Standard Floppy Disk Controller
3		(free)
4		Direct memory access controller
5		(free)
6		(free)
7		(free)

System I/O Address

	System I/O Address
I/O Address (Hex)		System Function (Shipping Configuration)
x0000 - x000F			Direct memory access controller
x0020 - x0021			Programmable interrupt controller

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