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Memory Maps
MVME3100 Single Board Computer Installation and Use (6806800M28C)
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6.1.2 MOTLoad’s Processor Memory Map
MOTLoad’s processor memory map is given in the following table.
After RESET, the MPC8540 does not map any PCI memory space (inbound or outbound), and
does not respond to Config cycles.
6.1.3 VME Memory Map
The MVME3100 is fully capable of supporting both the PReP and the CHRP VME Memory Map
examples with RAM size limited to 2GB.
Table 6-2 MOTLoad’s Processor Address Map
Processor Address
Size Definition NotesStart End
0000 0000 top_dram-1 dram_size
(2GB max)
System Memory (on-board DRAM)
8000 0000 DFFF FFFF 1.5GB PCI Memory Space/VME
E000 0000 E0FF FFFF 16MB PCI I/O Space
E100 0000 E10F FFFF 1MB MPC8540 CCSR
E1100 0000 E1FF FFFF 15MB Not Used
E200 0000 E2FF FFFF 16MB Status/Control Registers/UARTs,
External Timers
E300 0000 EFFF FFFF 208MB Not Used
F000 0000 F7FF FFFF 128MB Reserved
1
,
2
bottom_flash FFFF FFFF flash_size
(128MB max)
Flash
2
1. Reserved for future larger flash devices.
2. The flash is ligically one back but may be physically implemented in two banks.