7-6 Physical and Operating Specifications
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| Table | ||
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| Memory Addresses | ||
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Memory Address | Size |
| System Function | ||
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FFFFFFFFh to FFF80000h | 512 KB |
| System ROM | ||
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FEEFFFFFh to FEE00000h | 1024 KB |
| Local APIC address range | ||
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FECFFFFFh to FEC00000h | 1024 KB |
| I/O APIC address range | ||
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C7FFFFFFh to 50000000h | 1,966,080 KB |
| PCI Memory expansion | ||
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3FFFFFFFh to 01000000h | 1,032,192 KB |
| HOST Memory expansion | ||
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00FFFFFFh to 00100000h | 15,360 KB |
| HOST or ISA Memory expansion | ||
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000FFFFFh to 000F0000h | 64 KB |
| System ROM | ||
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000EFFFFh to 000E0000h | 64 KB |
| Expansion system ROM | ||
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000DFFFFh to 000C0000h | 128 KB |
| Option ROM | ||
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000BFFFFh to 000A0000h | 128 KB |
| Video RAM | ||
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0009FFFFh to 00000000h | 640 KB |
| Base memory | ||
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1 KB = 1024 bytes. Any memory above host memory is
