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GXM データシート(PDF) 93 Page - National Semiconductor (TI) |
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GXM データシート(HTML) 93 Page - National Semiconductor (TI) |
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93 / 244 page  Revision 3.1 93 www.national.com Integrated Functions (Continued) Figure 4-2. Geode™ GXm Processor Memory Space Conventional Memory UMBs and Expansion ROMs Video BIOS System BIOS Extended Memory PCI Access Scratchpad VGA/MDA Frame Buffers (Soft VGA and/or PCA/ISA) Internal Bus IF Unit Registers Graphics Pipeline Registers SMMSystemCode (Frame Buffer, etc.) PCI Access ROM Access (256 KB) 0h A0000h (640 KB) C0000h E0000h 100000h (1 MB) E8000h GX_BASE+8000h GX_BASE+9000h GX_BASE+400000h GX_BASE+800000h GX_BASE+1000000h FFFC0000h FFFFFFFFh (4 GB) Extended Memory Graphics Memory (Frame Buffer, etc.) 0h A0000h (640 KB) C0000h E0000h 100000h (1 MB) E8000h Shadowed Video BIOS Shadowed System BIOS SMMSystemCode Physical Address Map DRAM Map MAX *GBADD or Top of DRAM *Top of DRAM PCI Access PCI Access Display Controller Registers Memory Controller Registers Graphics Memory * See BC_DRAM_TOP Table 4-10 on page 101 or MC_GBASE_ADD on page 111. (See Table 4-29 on page 136) (See Table 4-24 on page 124) (See Table 4-9 on page 101) GX_BASE (See Table 4-1 on page 92) FFFF FFFFh MAX Conventional Memory UMBs and Expansion ROMs GX_BASE+8500h GX_BASE+8400h (See Table 4-15 on page 108) GX_BASE+8300h GX_BASE+8100h (See Table 4-5 on page 97) GX_BASE+1000h Power Management Registers (See Table 6-1 on page 179) |
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