--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/code_part1/OSTC_code_asm_part1/io.asm	Tue Jan 12 15:05:59 2010 +0100
@@ -0,0 +1,64 @@
+; OSTC - diving computer code
+; Copyright (C) 2009 HeinrichsWeikamp GbR
+;    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, either version 3 of the License, or
+;    (at your option) any later version.
+;    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, see <http://www.gnu.org/licenses/>.
+
+
+; low-level routines for i/O
+; written by: Matthias Heinrichs, info@heinrichsweikamp.com
+; written: 090801
+; last updated: 090801
+; known bugs:
+; ToDo:
+
+set_LEDy:	; Yellow LED
+	bsf		LED_red
+	return
+clear_LEDy	; Yellow LED
+	bcf		LED_red
+	return
+
+set_LEDr:	; Red LED
+	bsf		LED_red
+	return
+clear_LEDr	; Red LED
+	bcf		LED_red
+	return
+toggle_LEDr	; Red LED
+	btg		LED_red
+	return
+
+
+set_LEDg:	; Green LED
+	bsf		LED_red
+	return
+clear_LEDg	; Green LED
+	bcf		LED_red
+	return
+
+set_LEDusb:	; USB LED
+	bsf		LED_blue
+	return
+clear_LEDusb;  USB LED
+	bcf		LED_blue
+	return
+
+set_LEDnofly:	; nofly LED
+	bsf		LED_blue
+	return
+clear_LEDnofly;  nofly LED
+	bcf		LED_blue
+	return
+toggle_LEDnofly	; nofly LED
+	btg		LED_blue
+	return
+
+