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Compaq Deskpro 1000 Series of Personal Computers 8-3
Table 8-4
System I/O
I/O Address (Hex) * System Function (Shipping Configuration)
000 - 00F 8237 DMA Controller #1
020 - 02F 8259A Master Programmable Interrupt Controller
040 - 05F Programmable Internal Timer
060 - 06F Keyboard Controller
070 - 071 System CMOS/RTC, also NMI Enable/Disable
080 Manufacture System Check Point Port
081 - 09F DMA Page Registers
0A0 - 0BF Second 8259 Programmable Interrupt Controller
0C0 - 0DF DMA Controller #2
0F0 - 0FF Numeric Data Processor
170 – 17F Secondary IDE Controller
1F0 - 1FF Primary IDE Controller
200 Gameport (only if you have a sound card installed)
201 Gameport (only if you have a sound card installed)
278 - 27F Third Parallel Port
2E8 - 2EF COM4 (if you set COM4)
2F8 - 2FF COM2
370 - 377 Secondary Diskette Controller (if present))
378 - 37F Second Parallel Port
3B0 - 3BF Monochrome Display Adapter/Primary Parallel Port
3C0 - 3CF EGA/VGA Adapter
3D0 - 3DF Color Graphic Adapter
3E8 - 3EF COM3 (if you set COM3)
3F0 - 3F7 Primary Diskette Controller
3F8 - 3FF COM1
04D0 - 04D1 PIC Edge/Level Control Register
0CF8 - 0CFF PCI Configuration Register
6000 - FFFF PCI Device I/O Space
*All I/O addresses below 100 are reserved by the chipset even if they are not used.