test5.c

来自「5402开发板附带的源程序」· C语言 代码 · 共 30 行

#include"REG5402.h"
ioport unsigned port8000;
ioport unsigned port8100;

unsigned int  WRITE;
unsigned int  READ;  

void cpu_init()
{
   PMST=0x3FA0;
   SWWSR=0x7fff;
   SWCR=0x0000;
   IMR=0;
   IFR=IFR;
}    

void main(void)
{
   cpu_init();
   READS=0;

   for(;;)
   {
     READ=(READS&0x00ff); 
    
    READS=READ<<8;
   }
}