relaunch ontop of latest grbl edge

code very messy but tested

sim/util/delay.c

@@ -0,0 +1,27 @@
+/*
+  delay.c - replacement for the avr library of the same name to provide
+  dummy functions
+
+  Part of Grbl Simulator
+
+  Copyright (c) 2012 Jens Geisler
+
+  Grbl 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, either version 3 of the License, or
+  (at your option) any later version.
+
+  Grbl 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 Grbl.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+// TODO: the simulation time should reflect when grbl dwells
+// Maybe this becomes a no-issue when dwell is executed in a buffered block
+void _delay_ms(int i) {}
+
+void _delay_us(int i) {}

sim/util/delay.h

@@ -0,0 +1,29 @@
+/*
+  delay.h - replacement for the avr include of the same name to provide
+  dummy functions
+
+  Part of Grbl Simulator
+
+  Copyright (c) 2012 Jens Geisler
+
+  Grbl 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, either version 3 of the License, or
+  (at your option) any later version.
+
+  Grbl 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 Grbl.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef delay_h
+#define delay_h
+
+void _delay_ms(int i);
+void _delay_us(int i);
+
+#endif

sim/util/floatunsisf.c

@@ -0,0 +1,3 @@
+float __floatunsisf (unsigned long v) {
+	return v;
+}