--- /dev/null
+/*
+ * Copyright © 2011 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "ao.h"
+
+int
+stdio_put(char c, FILE *stream)
+{
+ if (ao_cur_task && ao_num_stdios)
+ putchar(c);
+ else
+ {
+ if (c == '\n')
+ stdio_put('\r', stream);
+ loop_until_bit_is_set(UCSR1A, UDRE1);
+ UDR1 = c;
+ }
+
+ return 0;
+}
+
+int
+stdio_get(FILE *stream)
+{
+ return (int) getchar() & 0xff;
+}
+
+static FILE mystdout = FDEV_SETUP_STREAM(stdio_put, NULL, _FDEV_SETUP_WRITE);
+
+static FILE mystdin = FDEV_SETUP_STREAM(NULL, stdio_get, _FDEV_SETUP_READ);
+
+void
+ao_stdio_init(void)
+{
+ stdout = &mystdout;
+ stdin = &mystdin;
+ printf("%d stdios registered\n", ao_num_stdios);
+}