User's Manual

English 93
6 Technical Information
The PC’s Memory Map
The PC’s Memory Map
Memory Area Memory Range Hexadecimal
Address Range
Used By
Extended Memory: 1 MB to 4 MB
Extended memory 1024 KB upward 01000 to 0F0000 Windows Applications
Conventional Memory: 0 KB to 1024 KB (1 MB)
384 KB Reserved
Memory Area
960 KB to 1024 KB 0F0000 to 010000 64 KB BIOS area
896 KB to 960 KB 0E0000 to 0F0000 64 KB (available)
800 KB to 896 KB 0C8000 to 0E0000 96 KB available for
accessory boards
768 KB to 800 KB 0C0000 to 0C8000 32 KB Video BIOS Area
640 KB to 768 KB 0A0000 to 0C0000 128 KB Video Memory Area
640 KB Base
Memory Area
0 KB to 640 KB 09F000 to 0A0000 Extended BIOS Data Area
— User Application Program
Area
— MS-DOS Operating System
0500 to 0700 MS-DOS Temp Buffer
0400 to 04FF BIOS Data Area
0000 to 03FF Interrupt Vector Table
uno.bk : uno6_tec.fb4 Page 93 Monday, July 21, 1997 12:46 PM