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Specifications B-7
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.
System Memory Map
Memory Space Size Function
FFFE 0000H-FFFF FFFFH 128K Upper ROM, System and Video
BIOS
FFFC 0000H-FFFD FFFFH 128K Lower ROM, Power Management
BIOS
FFFA 0000H-FFFB FFFFH
FFF8 0000H-FFF9 FFFFH
128K
128K
New Extended Area
FFF0 0000H-FFF7 FFFFH 512K 1MB Extended, BIOS 512KB
0A00 0000H-0BFF FFFFH Up to 176MB Extended Memory
000F 0000H-000F FFFFH
000E 0000H-000E FFFFH
64K
64K
System BIOS, 128K
000A 0000H-000B FFFFH 128K Video Buffer Ram
000C 0000H-000D FFFFH 128K Available for Applications
0000 0000H-0009 FFFFH 640K System/Application Memory