#include <stdio.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <asm/io.h>

char *binprint( unsigned char x, char *buf )
{
  int i;
  for( i=0; i<8; i++ )
    buf[7-i]=(x&(1<<i))?'1':'0';
  buf[8]=0;
  return buf;
}

int main( int argc, char *argv[] )
{
  char c;
  unsigned char val;
  char buf[9];
  int x,base=0x280,off=0;
  if( argc!=4 )
  {
    printf("  example usage: bits 1 a 65 (sets 1st 8255 port a to 65)\n");
    return 2;
  }
  if( argv[1][0] == '1' ) base = 0x280;
  if( argv[1][0] == '2' ) base = 0x2a0;
  if( argv[1][0] == '3' ) base = 0x2c0; 
  if( ioperm(base,4,1) )
  {
    printf("Couldn't get port perm\n");
    return 1;
  }
  off = argv[2][0]-'a';
  val = atoi(argv[3]); 
  printf("%s\n",binprint(val,buf));
  outb(val,base+off); 
  return 0;
}