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MVME4100 Single Board Computer Programmer’s Reference (6806800H19D)
21
Chapter 2
Memory Maps
2.1
Overview
The following sections describe the memory maps for the MVME4100. Refer to the
MPC8548E Reference Manual
for additional details and/or programming information.
2.1.1
Default Processor Memory Map
The following table describes a default memory map from the point of view of the processor
after a processor reset.
2.1.2
Suggested Processor Memory Map
The following table describes a suggested physical memory map from the point of view of
the processor. This table reflects the address map implemented by the board level firmware
at release time.
Table 2-1
Default Processor Address Map
Processor Address
Size
Definition
Notes
Start
End
0000 0000
FF6F FFFF
4087 M
Not mapped
FF70 0000
FF7F FFFF
1 M
MPC8548E CCSR
Registers
FF80 0000
FFFF FFFF
8 M
Flash
1
1. The e500 core fetches the first instruction from FFFF FFFC following a reset.
Table 2-2
Suggested Processor Address Map
Processor Address
Size
Definition
Start
End
0000 0000
top_dram - 1
dram_size
(2 GB max)
System Memory
(on-board DRAM)
8000 0000
CFFF FFFF
1.25 GB
PCI 0 Memory Space / VME
D000 0000
DFFF FFFF
256 MB
PCI 1 Memory Space
E000 0000
EFFF FFFF
256 MB
Not used
F000 0000
F07F FFFF
8 MB
PCI 0 I/O Space
Содержание MVME4100
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