4-1
Chapter 4 – Programming
Memory Map
Table Chapter 4 -1 illustrates the XVME-655’s memory map.
Table Chapter 4 -1. XVME-655 Memory Map
Address Range
Size
Usage
FFFB0000-FFFFFFFF
256 Kbytes
System BIOS
04000000-FEFFFFFF
Allocated to PCI bus by BIOS or operating system
00100000-007FFFFF
00100000-00FFFFFF
00100000-01FFFFFF
00100000-03FFFFFF
8 Mbytes
16 Mbytes
32 Mbytes
64 Mbytes
System DRAM
000F0000-000FFFFF
64 Kbytes
System BIOS
000E0000-000EFFFF
64 Kbytes
System BIOS or real mode window or I/O channel memory
00D0000-00DFFFF
64 Kbytes
Real mode window or I/O channel memory or on-board
BIOS
000C8000-000CFFFF
32 Kbytes
I/O channel memory or on-board BIOS
000C0000-000C7FFF
32 Kbytes
Video BIOS
000A0000-000BFFFF
128 Kbytes
VGA DRAM memory
00000000-0009FFFF
640 Kbytes
System DRAM
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