c_prog.c

Keil Cx51 V7.0单片机高级语言编程与uVision2应用实践

#include <stdio.h>
#include <reg51.h>
extern code char *message0[];
extern code char *message1[];
extern switchbank (unsigned char);

void main(void) {
/* 串行口初始化为: 2400 BAUD @12MHz */
  SCON = 0x52;  
  TMOD = 0x20;  
  TCON = 0x69;  
  TH1 =  0xf3;  
  switchbank(0);                /* 切换到代码组 0 */
  printf(message0[0]);
  switchbank(1);                /* 切换到代码组 1 */
  printf(message1[0]);
  while(1);
}