Memory Map
The system supports system and video shadowing, both controlled through
complementary metal oxide semiconductor (CMOS). The system supports BIOS as a
cacheable area with write protection. The following table shows the system's memory
map.
Memory Space
0000 0000h-0009 FFFFh
000A 0000h-000B FFFFh
000C 000h-000D FFFFh
000E 0000h-000F FFFFh
0010 0000h-09FF FFFFh
000A 0000h-FFEF FFFFh
FFF0 0000h-FFF7 FFFFh
FFF8 0000h-FFF9 FFFFh
FFFA 0000h-FFFBFFFFh
FFFE 0000h-FFFF FFFFh
B-8 Specifications
System Memory Map
Size
640K
128K
128K
128K
up to 160MB
128K
512K
256K
128K
128K
Function
System/Application Memory
Video Buffer RAM
Available for applications
Upper ROM, System and Video
BIOS
Extended Memory
Video RAM Frame Buffer
1MB Extended BIOS
New Extended BIOS
Lower ROM, Power Management
BIOS
System BIOS (alias)
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