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$B$=$7$F!"$=$l$i$N4X?t$O$^$? #define virt_to_bus virt_to_phys #define bus_to_virt phys_to_virt extern inline unsigned long virt_to_phys(volatile void * address) { return __pa(address); } extern inline void * phys_to_virt(unsigned long address) { return __va(address); } in /usr/src/linux/include/asm/page.h #define __pa(x) ((unsigned long)(x)-PAGE_OFFSET) #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) #define __PAGE_OFFSET (0xC0000000) #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) $B$3$l$i$NDj5A$+$i!"%$%s%F%k(Bx86 CPU$B$K$*$$$F$O(B $B$K$J$j$^$9!#(B $B;29M$N$?$a!"8=:_$NJ*M}%"%I%l%9$,$I$N$h$&$K$J$C$F$$$k$+$rCN$k$?$a$K(B /proc/iomem$B$r8+$F$/$@$5$$!#(B 
00000000-0009fbff : System RAM
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000c8000-000cc7ff : Extension ROM
000f0000-000fffff : System ROM
00100000-07ffffff : System RAM
  00100000-0022f8d5 : Kernel code
  0022f8d6-002aa143 : Kernel data
f8000000-fbffffff : S3 Inc. ViRGE/DX or /GX
ffbeb000-ffbebfff : Adaptec AIC-7881U
ffbefc00-ffbefc7f : Digital Equipment Corporation DECchip 21140 [FasterNet]
  ffbefc00-ffbefc7f : eth0
fff80000-ffffffff : reserved

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