text: #include "io.h"
  
  int main(void)
  {
      long long rs, rt, ach, acl;
      long long result, resulth, resultl;
  
      rs  = 0x00FFBBAA;
      rt  = 0x4B231000;
      resulth = 0x4b0f01;
      resultl = 0x71f8a000;
      __asm
          ("mult $ac1, %2, %3\n\t"
           "mfhi %0, $ac1\n\t"
           "mflo %1, $ac1\n\t"
           : "=r"(ach), "=r"(acl)
           : "r"(rs), "r"(rt)
          );
      if ((ach != resulth) || (acl != resultl)) {
          printf("mult wrong\n");
  
          return -1;
      }
  
      return 0;
  }
  