CyberResearch CEL-24-X, P4-24-X, P4-32-X Appendix C Address Mapping, C.1 IO Address Map, C.2 1st MB Memory Address Map, Range, I/O address, Description, Description, Memory address, *Default setting

CPEX Series CyberResearch® CPU Cards

Appendix C Address Mapping

C.1 IO Address Map

I/O address	Description
Range
000-01F	DMA Controller
020-021	Interrupt Controller
040-043	System time
060-06F	Keyboard Controller
070-07F	System CMOS/Real time Clock
080-09F	DMA Controller
0A0-0A1	Interrupt Controller
0C0-0DF	DMA Controller
0F0-0FF	Numeric data processor
1F0-1F7	Primary IDE Channel
2F8-2FF	Serial Port 2 (COM2)
378-37F	Parallel Printer Port 1 (LPT1)
3B0-3BB	Intel(R) 82915 Graphics Controller
3C0-3DF	Intel(R) 82915 Graphics Controller
3F6-3F6	Primary IDE Channel
3F7-3F7	Standard floppy disk controller
3F8-3FF	Serial Port 1 (COM1)

C.2 1st MB Memory Address Map

Memory address	Description
00000-9FFFF	System memory
A0000-BFFFF	VGA buffer
F0000-FFFFF	System BIOS
1000000-	Extend BIOS

*Default setting

64 ©Copyright 2005 CyberResearch, Inc.