G1-266P-85-1.8
| Model | G1-266P-85-1.8 |
| Description | Processor Series Low Power Integrated x86 Solution |
| PDF file | Total 247 pages (File size: 4M) |
| Chip Manufacturer | NSC |
Geode™ GX1 Processor Series
Integrated Functions
(Continued)
Physical Address Map
ROM Access
(256 KB)
PCI Access
GX_BASE+8800000h
Graphics Memory
(Frame Buffer, etc.)
GX_BASE+800000h
SMM System Code
GX_BASE+400000h
GX_BASE+9000h
Power Management Registers
(See Table 5-1 on page 182)
GX_BASE+8500h
DRAM Map
FFFF FFFFh
MAX
Graphics Memory
(Frame Buffer, etc.)
Memory Controller Registers
(See Table 4-14 on page 112)
GX_BASE+8400h
Display Controller Registers
(See Table 4-28 on page 141)
Graphics Pipeline Registers
(See Table 4-23 on page 129)
Internal Bus IF Unit Registers
(See Table 4-8 on page 104)
PCI Access
Available to the system
Scratchpad RAM
(See Table 4-3 on page 100)
GX_BASE
PCI Access
Available to the system
*GBADD or Top of DRAM
Extended Memory
100000h (1 MB)
Shadowed System BIOS
E8000h
Shadowed Video BIOS
E0000h
UMBs and
Expansion ROMs
C0000h
SMM System Code
A0000h (640 KB)
Conventional Memory
0h
* See BC_DRAM_TOP in Table 4-8 on page 104 or MC_GBASE_ADD in Table 4-15 on Page 116.
FFFFFFFFh (4 GB)
MAX
FFFC0000h
GX_BASE+8300h
GX_BASE+8100h
GX_BASE+8000h
GX_BASE+1000h
Top of DRAM*
Extended Memory
100000h (1 MB)
System BIOS
E8000h
Video BIOS
UMBs and Expansion ROMs
VGA/MDA
Frame Buffers
(Soft VGA and/or PCA/ISA)
Conventional Memory
0h
E0000h
C0000h
A0000h (640 KB)
Figure 4-2. GX1 Processor Memory Space
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98
Revision 1.0
