rcx.c

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "MPL"); you may not use this file except in
 * compliance with the MPL.  You may obtain a copy of the MPL at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the MPL is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the MPL
 * for the specific language governing rights and limitations under the
 * MPL.
 *
 * The Initial Developer of this code under the MPL is Christopher
 * R. Waterson. Portions created by Christopher R. Waterson are
 * Copyright (C) 2000 Christopher R. Waterson. All Rights Reserved.
 *
 * Contributor(s):
 *   Christopher R. Waterson <waterson@maubi.net>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or 
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
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 *
 */

#include "rcx.h"

/*
 * Display a number on the RCX's LCD. Adapted from:
 *
 *   <http://www.daimi.au.dk/dArkOS/Vaerktoejer.dir/RCX.vejledning.dir/Vejledning.html>
 *     ``RCX Manual'', Ole Caprani <ocaprani@daimi.au.dk>
 */
void
rcx_lcd_show_number(unsigned format, int value, unsigned scalecode)
{
    asm("\tpush r2\n"
        "\tpush r1\n"
        "\tmov.w r0,r6\n"
        "\tjsr lcd_number  ; call show_number\n"
        "\tadds #0x2,r7    ; cleanup stack \n"
        "\tadds #0x2,r7\n"
        "\tjsr lcd_refresh ; call refresh\n"
       );
}