#include <reg51.h>
sbit P1b0 =  P1^0;
sbit regAMSB = ACC^7;
void main(void)
  { 
    unsigned char conbyte = 0x44;
    unsigned char x;
    ACC = conbyte;
    for(x=0; x<8; x++)
      {
        P1b0 = regAMSB;
        ACC = ACC << 1;
      }
  }