Appendix A – Technical Summary
ATXP-965Q Technical Reference
48
Chassis Plans
System Memory Map
ADRESS RANGE
(DECIMAL)
ADDRESS RANGE (HEX)
SIZE DESCRIPTION
1024K – 8388608K
100000-1FFFFFFFF
8191MB
EXTENDED MEMORY
960K – 1024K
F0000-FFFFFF
64K
RUNTIME BIOS
896K – 960K
E0000-EFFFF
64K
RESERVED
800K – 896K
C8000-DFFFF
96K
AVAILABLE TO ADAPTER ROMS
640K – 800K
A0000-C7FFF
160K
VIDEO MEMORY AND BIOS
639K – 640K
9FC00-9FFFF
1K EXTENDED
BIOS
DATA
512K – 639K
80000-9FBFF
127K
EXTENDED CONVENTIONAL
MEMORY
0K – 512K
00000-7FFFF
512K
CONVENTIONAL MEMORY
DMA Channels
DMA NUMBER
DATA WIDTH
RESOURCE
0 8/16
1 8/16
PARALLELPORT
2 8/16
FLOPPY
DRIVE
3 8/16
PARALLEL
PORT
4 8/16
DMA
5 16
6 16
7 16