Chassis Plans ATXP-875P, Technical Reference

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Appendix A: Technical Specifications ATXP-875P – Technical Reference
52 Chassis Plans
Memory Map
Address
Range
Decimal Address
Range
Hexadecimal
Size Description
960K-1M
0F0000-
0FFFFF
64 KB Upper BIOS
896K-960K
0E0000-
0EFFFF
64 KB Lower BIOS
768K-896K
0C0000-
0DFFFF
128 KB
Expansion
Card BIOS
and Buffer
640K-768K
0A0000-
0BFFFF
128 KB
Standard
PCI/ISA
Video
Memory
633K-640K
09E400-
09FFFF
7KB
BIOS
Reserved
512K-633K
080000-
09E3FF
121 KB
Ext.
Conventional
memory
0K- 512K
000000-
07FFFF
512 KB
Conventional
memory
DMA Channels
DMA # Data Width System Resource
0 8- or 16-bits Open
1 8- or 16-bits Parallel port (for ECP) (if selected)
2 8- or 16-bits Floppy Drive
3
8- or 16-bits Parallel port (for ECP) (if selected)
4 Reserved- cascade channel
5 16-bits Open
6 16-bits Open
7 16-bits Open