// File : m10_port.c 

#include <GC80C520_PL44I.H>

void init_port()
{
	ADCSEL &= 0xFE; // set P0.0 i/o instead of adc.
	ADCSEL &= 0xF1; // set P1.1,P1.2,P1.3 i/o instead of adc.
	
	P0SEL = 0x00;   // pull-up ON.
	P1SEL = 0x00;   // pull-up ON.
	P2SEL = 0x00;
	P3SEL = 0x00;
	P4SEL = 0x00;
	
	P0 = 0x55;
	P1 = 0xAA;
}

void main()
{
	init_port();
	while(1);
}