x86上的Bios内存分布

xu_bin

0x0000:0 Interrupt Vector Table
0x0040:0 BIOS Data Area
0x0050:0 PrtScr Status / Unused
0x0060:0 Image Load Address
0x07C0:0 Boot code is loaded here at startup (31k mark)
0xA000:0 EGA/VGA RAM for graphics display mode 0Dh & above
0xB000:0 MDA RAM, Hercules graphics display RAM
0xB800:0 CGA display RAM
0xC000:0 EGA/VGA BIOS ROM (thru C7FF)
0xC400:0 Video adapter ROM space
0xC600:0 256 B PGA communication area
0xC800:0 16 KB Hard disk adapter BIOS ROM
0xC800:5 XT Hard disk ROM format, AH=Drive, AL=Interleave
0xD000:0 32 KB Cluster adapter BIOS ROM
0xD800:0 PCjr conventionalsoftware cartridge address
0xE000:0 64 KB Expansion ROM space (hardwired on AT+)
128 KB PS/2 System ROM (thru F000)
0xF000:0 System monitor ROM
PCjr: software cartridge override address
0xF400:0 System expansion ROMs
0xF600:0 IBM ROM BASIC (AT)
0xF800:0 PCjr software cartridge override address
0xFC00:0 BIOS ROM
0xFF00:0 System ROM
0xFFA6:E ROM graphics character table
0xFFFF:0 ROM bootstrap code
0xFFFF:5 8 B ROM date (not applicable for all clones)
0xFFFF:E 1 B ROM machine id
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