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32 AMD Geode™ LX Processor/CS5536 Companion Device GeodeROM Porting Guide
Memory Map
40680B
Figure 7-3. CPU Core Cache Region Configurations
ROM
PCI
Memory Mapped
PCI
PCI
Memory Mapped VSA
PCI
Memory Mapped Frame Buffer
Memory Mapped Video Registers
PCI
Frame Buffer
VSA
Extended Memory
System and Option ROMs
Conventional Memory
RCONF_DEFAULT ROMRC
RCONF_DEFAULT ROMBASE
RCONF_DEFAULT DEVRG
RCONF_SMM
RCONF_DEFAULT SYSTOP
RCONF_DEFAULT SYSRC
RCONF_A0_BF-RCONF_E0_FF
RCONF_DEFAULT SYSRC
RCONF_BYPASS
RCONF-RCONF7
FFFC0000h
40400000h
50000000h
Top of DRAM
VSA and Frame Buffer
Top of System
(OS) RAM
Not Used
SMM and DMM header and
table walk properties
PCI
subtracted from
Extended Memory