Chapter 3 Hardware
CoreModule 420 Reference Manual 19
Table 3-1. Memory Map (continued)
Address Size Use
0400 0000 1MB RAM or Unused if Framebuffer is set to 1MB or more
03F0 0000 1MB RAM or Unused if Framebuffer is set to 2MB or more
03E0 0000 1MB RAM or Unused if Framebuffer is set to 3MB or more
03D0 0000 1MB RAM or Unused if Framebuffer is set to 4MB
03C0 0000 44MB RAM
Use
Memory hole size selected
Address Size
8MB 4MB 2MB 1MB 0MB
0100 0000 1MB H H H H R
00F0 0000 1MB H H H R R
00E0 0000 1MB H H R R R
00D0 0000 1MB H H R R R
00C0 0000 1MB H R R R R
00B0 0000 1MB H R R R R
00A0 0000 1MB H R R R R
0090 0000 1MB H R R R R
R = RAM
H = Memory Hole, forwarded to ISA
The board can be configured to have access to the 1MB
Flash anywhere in the memory hole, on 1MB alignment.
0080 0000 7MB RAM
0010 0000 128kB Shadowed BIOS
000E 0000 8kB Unused
000D E000 8kB DiskOnChip, if DC000-DDFFF window selected.
Unused if no DOC present.
000D C000 56kB Unused
000C E000 8kB DiskOnChip, if CC000-CDFFF window selected.
Unused if no DOC present.
000C C000 48kB Unused
000C 0000 128kB Unused, reserved for Video RAM, or
in SMI mode, mapped to RAM
000A 0000 -
0000 0000 640kB Base memory