Intel OPEN (660) 120/140/150 II - Manual (Page 155)

User Manual version 2.1
OPEN (660) 120/140/150
9-145
F: First MB Memory Map
Address range (Hex) Device
F000h-FFFFh
System ROM
C800h-EFFFh Unused
C000h-C7FFh Expansion ROM
B800h-BFFFh CGA/EGA/VGA text
B000h-B7FFh Unused
A000h-AFFFh EGA/VGA graphics
0000h-9FFFh Base memory
D000-DFFFH DiskOnChip 