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"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1683, 1685, 1687, 1688, and 1690
IRQ14 Primary IDE controller (dual fifo)
IRQ15
ALi M5229 PCI Bus Master IDE Controller
IRQ15 Secondary IDE controller (dual fifo)
System DMA
System DMA
Hardware DMA System Function
0
(free)
1
ESS SOLO-1 DOS Emulation
2
Standard Floppy Disk Controller
3
(free)
4
Direct memory access controller
5
(free)
System I/O Address
System I/O Address
I/O Address (Hex) System Function (Shipping Configuration)
0000 - 000Fh Direct memory access controller
0020h - 0021h Programmable interrupt controller
0040h - 0043h System timer
0060h - x0060h Standard 101/102-Key or Microsoft Natural Keyboard
0061h - x0061h System speaker
0064h - x0064h Standard 101/102-Key or Microsoft Natural Keyboard
0070h - 0071h System CMOS/real time clock
0080h - 0080h Motherboard resources
0081h - 008Fh Direct memory access controller
0092h - 0092h Motherboard resources
00A0h - 00A1h Programmable interrupt controller
file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20checked%20ok/NOTEBOOK...00%20SERIES%201683%201685%201687%201688%201690%201694/spec.html (4 of 12)6/27/2004 2:57:31 AM