--- avrdude-5.10/config_gram.y.orig	2010-11-05 11:01:14.895247246 +0100
+++ avrdude-5.10/config_gram.y	2010-11-05 11:02:15.219259178 +0100
@@ -1212,10 +1212,10 @@
 
   value = v->value.number;
 
-  if ((value <= 0) || (value >= 18)) {
+  if ((value < 0) || (value >= 18)) {
     fprintf(stderr, 
             "%s: error at line %d of %s: pin must be in the "
-            "range 1-17\n",
+            "range 0-17\n",
             progname, lineno, infile);
     exit(1);
   }
--- avrdude-5.10/gpio.c.orig	2010-11-05 20:46:03.363248072 +0100
+++ avrdude-5.10/gpio.c	2010-11-05 20:46:10.051256461 +0100
@@ -101,6 +101,26 @@
 
 
 
+static int gpio_rdy_led(PROGRAMMER * pgm, int value)
+{
+	/* nothing */
+}
+
+static int gpio_err_led(PROGRAMMER * pgm, int value)
+{
+	/* nothing */
+}
+
+static int gpio_pgm_led(PROGRAMMER * pgm, int value)
+{
+	/* nothing */
+}
+
+static int gpio_vfy_led(PROGRAMMER * pgm, int value)
+{
+	/* nothing */
+}
+
 static void gpio_display(PROGRAMMER *pgm, const char *p)
 {
 	/* nothing */
@@ -128,40 +148,34 @@
 
 static int gpio_open(PROGRAMMER *pgm, char *port)
 {
-	int i;
-
-	bitbang_check_prerequisites(pgm);
-
 	if ((gpio_fd = open("/dev/gpio", O_RDWR)) < 0) {
 		perror("cannot open /dev/gpio");
 		return -1;
 	}
 	
-	for (i = 0; i < N_PINS; i++) {
-		if (i == PIN_AVR_MISO)
-			_gpio_dir(pgm->pinno[i], AVRDUDE_GPIO_DIR_IN);
-		else
-			_gpio_dir(pgm->pinno[i], AVRDUDE_GPIO_DIR_OUT);
-	}
+	_gpio_dir(pgm->pinno[PIN_AVR_RESET], AVRDUDE_GPIO_DIR_OUT);
+	_gpio_dir(pgm->pinno[PIN_AVR_SCK], AVRDUDE_GPIO_DIR_OUT);
+	_gpio_dir(pgm->pinno[PIN_AVR_MOSI], AVRDUDE_GPIO_DIR_OUT);
+	_gpio_dir(pgm->pinno[PIN_AVR_MISO], AVRDUDE_GPIO_DIR_IN);
 
-	return(0);
+	return 0;
 }
 
 static void gpio_close(PROGRAMMER *pgm)
 {
 	gpio_setpin(pgm, pgm->pinno[PIN_AVR_RESET], 1);
 	close(gpio_fd);
-	return;
+	return 0;
 }
 
 void gpio_initpgm(PROGRAMMER *pgm)
 {
 	strcpy(pgm->type, "GPIO");
 
-	pgm->rdy_led        = bitbang_rdy_led;
-	pgm->err_led        = bitbang_err_led;
-	pgm->pgm_led        = bitbang_pgm_led;
-	pgm->vfy_led        = bitbang_vfy_led;
+	pgm->rdy_led        = gpio_rdy_led;
+	pgm->err_led        = gpio_err_led;
+	pgm->pgm_led        = gpio_pgm_led;
+	pgm->vfy_led        = gpio_vfy_led;
 	pgm->initialize     = bitbang_initialize;
 	pgm->display        = gpio_display;
 	pgm->enable         = gpio_enable;