Chapter 4 - Programming; Memory Map - Xycom XVME-654 Manual

Chapter 4 – Programming

Memory Map

Table Chapter 4 -1 illustrates the XVME-654's memory map.
Address Range
FFFF0000-FFFFFFFF
F8000000-FFFEFFFF
80000000-F7FFFFFF
08000000-7FFFFFFF
04000000-07FFFFFF
00100000-03FFFFFF
00100000-01FFFFFF
00100000-00FFFFFF
00100000-007FFFFF
000F0000-000FFFFF
000E0000-000EFFFF
00D0000-00DFFFF
000C8000-000CFFFF
000C0000-000C7FFF
000A0000-000BFFFF
00000000-0009FFFF
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Table Chapter 4 -1. XVME-654 Memory Map
Size Usage
64 Kbytes System BIOS
~128 Mbytes Allocated to PCI bus by BIOS or operating system
15 x 128 Mbytes 128 Mbyte blocks of F8000000-FFFFFFFF
shadowed 15 times
15 x 128 Mbytes 128 Mbtye blocks of 0-07FFFFFF shadowed 15 times
64 Mbytes Allocated to PCI bus by BIOS or operating system
64 Mbytes System DRAM
32 Mbytes
16 Mbytes
8 Mbytes
64 Kbytes System BIOS
64 Kbytes System BIOS or real mode window or I/O channel
memory
64 Kbytes Real mode window or I/O channel memory or on-board
BIOS
32 Kbytes I/O channel memory or on-board BIOS
32 Kbytes Video BIOS
128 Kbytes VGA DRAM memory
640 Kbytes System DRAM
4-1