《操作系统》的实验代码。
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  1. #include <stdio.h>
  2. #include <ulib.h>
  3. int
  4. main(void) {
  5. cprintf("I read %08x from 0xfac00000!\n", *(unsigned *)0xfac00000);
  6. panic("FAIL: T.T\n");
  7. }