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jsspeccy.html
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<!DOCTYPE HTML>
<!--
JSSpeccy: A ZX Spectrum emulator in Javascript
Copyright (C) 2009 Matthew Westcott
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/>.
Contact details: <matthew@west.co.tt>
Matthew Westcott, 14 Daisy Hill Drive, Adlington, Chorley, Lancs PR6 9NE UNITED KINGDOM
-->
<html>
<head>
<title>JSSpeccy</title>
<link rel="stylesheet" href="jsspeccy.css" type="text/css">
<!--[if IE]><script type="text/javascript" src="excanvas-compressed.js"></script><![endif]-->
<script type="text/javascript" src="z80/z80_full.js"></script>
<script type="text/javascript" src="z80/z80_ops_full.js"></script>
<script type="text/javascript" src="spectrum.js"></script>
<script type="text/javascript" src="roms.js"></script>
<script type="text/javascript" src="sna.js"></script>
<script type="text/javascript" src="tap.js"></script>
<script type="text/javascript" src="snapshots.js"></script>
<script type="text/javascript">/* <![CDATA[ */
var tstates = 0;
var flashFrame = 0;
var running;
var event_next_event;
function addSnapshotToList(snapshot) {
var li = document.createElement('li');
var a = document.createElement('a');
a.appendChild(document.createTextNode(snapshot));
li.appendChild(a);
a.href = 'javascript:void(0)';
a.onclick = function() {
loadSna(snapshots[snapshot]);
hideSnapshotChooser();
start();
}
document.getElementById('snapshot_list').appendChild(li);
}
function addKeySelect(id, code, label, initial) {
var opt = document.createElement('option')
opt.appendChild(document.createTextNode(label));
opt.value = code;
if (label == initial) opt.selected = true;
document.getElementById(id).appendChild(opt);
}
function populateJoystickKeySelect(id, initial) {
addKeySelect(id, 32, 'Space', initial);
addKeySelect(id, 13, 'Enter', initial);
for (i = 48; i < 58; i++) {
addKeySelect(id, i, String.fromCharCode(i), initial);
}
for (i = 65; i < 91; i++) {
addKeySelect(id, i, String.fromCharCode(i), initial);
}
}
function go() {
hideSnapshotChooser();
hideAbout();
hideJoystickKeys();
populateJoystickKeySelect('select_key_up', 'Q');
populateJoystickKeySelect('select_key_down', 'A');
populateJoystickKeySelect('select_key_left', 'O');
populateJoystickKeySelect('select_key_right', 'P');
for (snapshot in snapshots) {
addSnapshotToList(snapshot);
}
/* Snapshot uploader */
document.getElementById('file_upload').onchange = function() {
var filename = this.files[0].fileName;
if (filename.match(/\.sna$/i)) {
snapshotData = this.files[0].getAsBinary();
loadSna(snapshotData);
hideSnapshotChooser();
start();
} else if (filename.match(/\.tap$/i)) {
tapData = this.files[0].getAsBinary();
loadTap(tapData);
hideSnapshotChooser();
start();
} else {
alert('Unrecognised file type - ' + filename);
}
}
z80_init();
spectrum_init();
}
function frame() {
event_next_event = 69888;
tstates = 0;
z80_do_opcodes();
/* dumpScreen(); */
/* dumpKeys(); */
flashFrame = (flashFrame + 1) & 0x1f;
paintScreen();
z80_interrupt();
}
function dumpScreen() {
var out = '';
for (var i = 0x4000; i < 0x5800; i++) {
out += Number(memory[i]).toString(16) + ' ';
}
document.getElementById('screendump').value = out;
}
function dumpKeys() {
var out = '';
for (var i = 0; i < 8; i++) {
out += Number(keyStates[i]).toString(16) + ' ';
}
document.getElementById('keydump').value = out;
}
function start() {
if (running) return;
running = true;
document.getElementById('menu').className = 'running';
run();
}
function run() {
if (!running) return;
frame();
setTimeout(run, 20);
}
function stop() {
document.getElementById('menu').className = 'stopped';
running = false;
}
function reset() {
z80_reset();
}
function showSnapshotChooser() {
document.getElementById('snapshot_chooser').style.display = 'block';
}
function hideSnapshotChooser() {
document.getElementById('snapshot_chooser').style.display = 'none';
}
function showAbout() {
document.getElementById('about').style.display = 'block';
}
function hideAbout() {
document.getElementById('about').style.display = 'none';
}
function showJoystickKeys() {
document.getElementById('joystick_keys').style.display = 'block';
}
function hideJoystickKeys() {
document.getElementById('joystick_keys').style.display = 'none';
}
/* ]]> */</script>
</head>
<body onload="go()">
<canvas id="screen" width="256" height="192"></canvas>
<ul id="menu" class="stopped">
<li id="menu_run"><a href="javascript:void(0)" onclick="start()" title="Play">Play</a></li>
<li id="menu_stop"><a href="javascript:void(0)" onclick="stop()" title="Pause">Pause</a></li>
<li id="menu_reset"><a href="javascript:void(0)" onclick="reset()" title="Reset">Reset</a></li>
<li id="menu_open"><a href="javascript:void(0)" onclick="showSnapshotChooser()" title="Open snapshot">Open snapshot</a></li>
<li id="menu_joystick"><a href="javascript:void(0)" onclick="showJoystickKeys()" title="Set joystick keys">Set joystick keys</a></li>
<li id="menu_about"><a href="javascript:void(0)" onclick="showAbout()" title="About JSSpeccy">About JSSpeccy</a></li>
</ul>
<!-- <textarea rows="24" cols="96" id="screendump"></textarea> -->
<!-- <textarea id="keydump"></textarea> -->
<br />
<div id="snapshot_chooser">
<div>Open SNA or TAP file: <input type="file" id="file_upload" /></div>
<p>Or select a game:</p>
<ul id="snapshot_list"></ul>
<a href="javascript:void(0)" class="close_button" onclick="hideSnapshotChooser()">Close</a>
</div>
<div id="about">
<h1>JSSpeccy</h1>
<h2>a ZX Spectrum emulator in Javascript</h2>
<p>By <a href="http://matt.west.co.tt/">Matt Westcott</a></p>
<p><a href="http://matt.west.co.tt/category/javascript/jsspeccy/">JSSpeccy homepage</a> (including downloads and source code)</p>
<p>Based on <a href="http://fuse-emulator.sourceforge.net/">Fuse</a> by Philip Kendall et al. Icons from <a href="http://www.icon-king.com/projects/nuvola/">Nuvola</a> by David Vignoni.</p>
<div id="licence">
<p>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.</p>
<p>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.</p>
<p>You should have received a copy of the GNU General Public License
along with this program. If not, see <<a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>>.</p>
</div>
<a href="javascript:void(0)" class="close_button" onclick="hideAbout()">Close</a>
</div>
<div id="joystick_keys">
<p>Joystick keys (clicking on the appropriate areas of the Spectrum screen will activate the keys selected below):</p>
<ul>
<li>
<label for="select_key_up">Up:</label>
<div><select id="select_key_up">
</select></div>
</li>
<li>
<label for="select_key_down">Down:</label>
<div><select id="select_key_down">
</select></div>
</li>
<li>
<label for="select_key_left">Left:</label>
<div><select id="select_key_left">
</select></div>
</li>
<li>
<label for="select_key_right">Right:</label>
<div><select id="select_key_right">
</select></div>
</li>
</ul>
<a href="javascript:void(0)" class="close_button" onclick="hideJoystickKeys()">Close</a>
</div>
</body>
</html>