--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/libcommon/defgetchar.c	Sun Jun 02 23:59:12 2019 +0000
@@ -0,0 +1,22 @@
+/*
+ * The interactive command entry (editing) function in libcommon
+ * will call mygetchar() for its character input.  It is supposed
+ * to be a blocking wait for input, but in some programs other
+ * processing can be done while waiting - for example, check for
+ * keypad presses as well.  This is the basic version which waits
+ * for serial input and nothing else - specific programs can
+ * override it if necessary, but this library version is the default.
+ */
+
+extern int serial_in_poll();
+
+int
+mygetchar()
+{
+	register int c;
+
+	do
+		c = serial_in_poll();
+	while (c < 0);
+	return c;
+}