2013-10-10 18:03:07 +00:00
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/* -*- mode: JavaScript; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* Copyright 2010-2013 Will Scullin <scullin@scullinsteel.com>
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation. No representations are made about the suitability of this
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* software for any purpose. It is provided "as is" without express or
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* implied warranty.
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*/
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/*globals allocMemPages: false, charset: false, base64_encode: false, base64_decode: false */
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/*exported LoresPage, HiresPage, VideoModes */
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var GREEN = [0x00,0xff,0x00];
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// var WHITE = [0xff,0xff,0xff];
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var MONO = GREEN;
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var textMode = true;
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var mixedMode = false;
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var hiresMode = false;
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var pageMode = 1;
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var _80colMode = false;
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var altCharMode = false;
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var doubleHiresMode = false;
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var pages = [];
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var context = null;
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/****************************************************************************
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*
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* Text/Lores Graphics
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*
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***************************************************************************/
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function LoresPage(page)
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{
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2013-11-16 20:26:31 +00:00
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// $00-$3F inverse
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// $40-$7F flashing
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// $80-$FF normal
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2013-10-10 18:03:07 +00:00
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var _page = page;
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var _buffer = [];
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var _refreshing = false;
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var _greenMode = false;
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2013-11-16 20:26:31 +00:00
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var _blink = false;
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2013-10-10 18:03:07 +00:00
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var _black = [0x00,0x00,0x00];
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var _white = [0xff,0xff,0xff];
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var _green = [0x00,0xff,0x00];
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var _colors = [
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[0x00,0x00,0x00], // 0 Black 0000 0 0
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[0x90,0x17,0x40], // 1 Red 0001 8 1
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[0x3c,0x22,0xa5], // 2 Dark Blue 1000 1
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[0xd0,0x43,0xe5], // 3 Purple 1001 9
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[0x00,0x69,0x40], // 4 Dark Green 0100 4
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[0xb0,0xb0,0xb0], // 5 Gray 1 0101 5
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[0x2f,0x95,0xe5], // 6 Medium Blue 1100 12
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[0xbf,0xab,0xff], // 7 Light Blue 1101 13
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[0x40,0x54,0x00], // 8 Brown 0010 2
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[0xd0,0x6a,0x1a], // 9 Orange 0011 3
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[0x40,0x40,0x40], // 10 Gray 2 1010 10
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[0xff,0x96,0xbf], // 11 Pink 1011 11
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[0x2f,0xbc,0x1a], // 12 Light Green 0110 6
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[0xb9,0xd0,0x60], // 13 Yellow 0111 7
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[0x6f,0xe8,0xbf], // 14 Aqua 1110 14
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[0xff,0xff,0xff] // 15 White 1111 15
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];
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function _init() {
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_buffer[0] = allocMemPages(0x4);
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_buffer[1] = allocMemPages(0x4);
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for (var idx = 0; idx < 0x400; idx++) {
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_buffer[0][idx] = 0; // idx & 0x2 ? 0xff : 0x00;
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_buffer[1][idx] = 0; // idx & 0x2 ? 0xff : 0x00;
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}
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}
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_init();
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return {
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2013-11-16 20:26:31 +00:00
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start: function() {
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var self = this;
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window.setInterval(function() {
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self.blink();
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}, 267);
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},
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2013-10-10 18:03:07 +00:00
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bank0: function() {
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var self = this;
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return {
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start: function() {
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return self._start();
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},
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end: function() {
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return self._end();
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},
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read: function(page, off) {
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return self._read(page, off, 0);
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},
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write: function(page, off, val) {
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return self._write(page, off, val, 0);
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}
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};
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},
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bank1: function() {
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var self = this;
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return {
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start: function() {
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return self._start();
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},
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end: function() {
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return self._end();
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},
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read: function(page, off) {
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return self._read(page, off, 1);
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},
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write: function(page, off, val) {
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return self._write(page, off, val, 1);
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}
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};
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},
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// These are used by both bank 0 and 1
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2013-11-16 20:26:31 +00:00
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_start: function() {
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return (0x04 * _page);
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},
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2013-10-10 18:03:07 +00:00
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_end: function() { return (0x04 * _page) + 0x03; },
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_read: function(page, off, bank) {
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var addr = (page << 8) | off,
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base = addr - 0x400 * _page;
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return _buffer[bank][base];
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},
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_write: function(page, off, val, bank) {
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var addr = (page << 8) | off,
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base = addr - 0x400 * _page,
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fore, back;
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if (_buffer[bank][base] == val && !_refreshing)
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return;
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_buffer[bank][base] = val;
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if (bank !== 0 && !_80colMode)
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return;
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var col = (base % 0x80) % 0x28,
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adj = off - col;
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// 000001cd eabab000 -> 000abcde
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var ab = (adj & 0x18),
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cd = (page & 0x03) << 1,
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e = adj >> 7;
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var idx, jdx;
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var row = ab | cd | e;
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var data = pages[_page].data;
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if ((row < 24) && (col < 40)) {
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if (!textMode && hiresMode && !(mixedMode && row > 19))
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return;
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var color;
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if (textMode || (mixedMode && row > 19)) {
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var b;
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2013-11-16 20:26:31 +00:00
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var flash = ((val & 0xc0) == 0x40) &&
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_blink && !_80colMode;
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fore = flash ? _black : (_greenMode ? _green : _white);
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back = flash ? _white : _black;
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2013-10-10 18:03:07 +00:00
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if (!altCharMode && !_80colMode) {
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val = (val >= 0x40 && val < 0x80) ? val - 0x40 : val;
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}
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2013-11-16 20:26:31 +00:00
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2013-10-10 18:03:07 +00:00
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if (_80colMode) {
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off = (col * 14 + (bank ? 0 : 1) * 7 + row * 560 * 8) * 4;
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for (jdx = 0; jdx < 8; jdx++) {
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b = charset[val * 8 + jdx];
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for (idx = 0; idx < 7; idx++) {
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color = (b & 0x01) ? back : fore;
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data[off + 0] = color[0];
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data[off + 1] = color[1];
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data[off + 2] = color[2];
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b >>= 1;
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off += 4;
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}
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off += 553 * 4;
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}
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} else {
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off = (col * 14 + row * 560 * 8) * 4;
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for (jdx = 0; jdx < 8; jdx++) {
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b = charset[val * 8 + jdx];
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for (idx = 0; idx < 7; idx++) {
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color = (b & 0x01) ? back : fore;
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data[off + 0] = color[0];
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data[off + 1] = color[1];
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data[off + 2] = color[2];
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data[off + 4] = color[0];
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data[off + 5] = color[1];
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data[off + 6] = color[2];
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b >>= 1;
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off += 8;
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}
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off += 546 * 4;
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}
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}
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} else {
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if (_80colMode) {
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off = (col * 14 + (bank ? 0 : 1) * 7 + row * 560 * 8) * 4;
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for (jdx = 0; jdx < 8; jdx++) {
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color = _colors[(jdx < 4) ?
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(val & 0x0f) : (val >> 4)];
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for (idx = 0; idx < 7; idx++) {
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data[off + 0] = color[0];
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data[off + 1] = color[1];
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data[off + 2] = color[2];
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off += 4;
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}
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off += 553 * 4;
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}
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} else {
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off = (col * 14 + row * 560 * 8) * 4;
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for (jdx = 0; jdx < 8; jdx++) {
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color = _colors[(jdx < 4) ?
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(val & 0x0f) : (val >> 4)];
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for (idx = 0; idx < 7; idx++) {
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data[off + 0] = color[0];
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data[off + 1] = color[1];
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data[off + 2] = color[2];
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data[off + 4] = color[0];
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data[off + 5] = color[1];
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data[off + 6] = color[2];
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off += 8;
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}
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off += 546 * 4;
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}
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}
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}
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}
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},
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refresh: function() {
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var page, off, addr = 0x400 * _page;
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_refreshing = true;
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for (var idx = 0; idx < 0x400; idx++, addr++) {
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page = addr >> 8;
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off = addr & 0xff;
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this._write(addr >> 8, addr & 0xff, _buffer[0][idx], 0);
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if (_80colMode)
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this._write(addr >> 8, addr & 0xff, _buffer[1][idx], 1);
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}
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_refreshing = false;
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},
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blink: function() {
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var addr = 0x400 * _page;
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_refreshing = true;
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_blink = !_blink;
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for (var idx = 0; idx < 0x400; idx++, addr++) {
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var b = _buffer[0][idx];
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if ((b & 0xC0) == 0x40) {
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this._write(addr >> 8, addr & 0xff, _buffer[0][idx], 0);
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}
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}
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_refreshing = false;
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},
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2013-10-10 18:03:07 +00:00
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green: function(on) {
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_greenMode = on;
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},
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blit: function() {
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context.putImageData(pages[_page], 0, 0);
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},
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getState: function() {
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return {
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page: _page,
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green: _green,
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buffer: [base64_encode(_buffer[0]),
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base64_encode(_buffer[1])]
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};
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},
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setState: function(state) {
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_page = state.page;
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_green = state.green;
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_buffer[0] = base64_decode(state.buffer[0]);
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_buffer[1] = base64_decode(state.buffer[1]);
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this.refresh();
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}
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};
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}
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/****************************************************************************
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*
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* Hires Graphics
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*
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***************************************************************************/
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function HiresPage(page)
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{
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var _page = page;
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var r4 = [0, // Black
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2, // Dark Blue
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4, // Dark Green
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6, // Medium Blue
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8, // Brown
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5, // Gray 1
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12, // Light Green
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14, // Aqua
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1, // Red
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3, // Purple
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10, // Gray 2
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7, // Pink
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9, // Orange
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11, // Light Blue
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13, // Yellow
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15]; // White
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var dcolors = [
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[0x00,0x00,0x00], // 0 Black 0000 0 0
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[0x90,0x17,0x40], // 1 Red 0001 8 1
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|
[0x3c,0x22,0xa5], // 2 Dark Blue 1000 1
|
|
|
|
|
[0xd0,0x43,0xe5], // 3 Purple 1001 9
|
|
|
|
|
[0x00,0x69,0x40], // 4 Dark Green 0100 4
|
|
|
|
|
[0xb0,0xb0,0xb0], // 5 Gray 1 0101 5
|
|
|
|
|
[0x2f,0x95,0xe5], // 6 Medium Blue 1100 12
|
|
|
|
|
[0xbf,0xab,0xff], // 7 Light Blue 1101 13
|
|
|
|
|
[0x40,0x54,0x00], // 8 Brown 0010 2
|
|
|
|
|
[0xd0,0x6a,0x1a], // 9 Orange 0011 3
|
|
|
|
|
[0x40,0x40,0x40], // 10 Gray 2 1010 10
|
|
|
|
|
[0xff,0x96,0xbf], // 11 Pink 1011 11
|
|
|
|
|
[0x2f,0xbc,0x1a], // 12 Light Green 0110 6
|
|
|
|
|
[0xb9,0xd0,0x60], // 13 Yellow 0111 7
|
|
|
|
|
[0x6f,0xe8,0xbf], // 14 Aqua 1110 14
|
|
|
|
|
[0xff,0xff,0xff] // 15 White 1111 15
|
|
|
|
|
];
|
|
|
|
|
|
|
|
|
|
// hires colors
|
|
|
|
|
var orangeCol = [0xff, 0x65, 0x00];
|
|
|
|
|
var greenCol = [0x00, 0xff, 0x00];
|
|
|
|
|
var blueCol = [0x09, 0x2a, 0xff];
|
|
|
|
|
var violetCol = [0xc9, 0x39, 0xc7];
|
|
|
|
|
var whiteCol = [0xff, 0xff, 0xff];
|
|
|
|
|
var blackCol = [0x00, 0x00, 0x00];
|
|
|
|
|
|
|
|
|
|
var _buffer = [];
|
|
|
|
|
var _refreshing = false;
|
|
|
|
|
|
|
|
|
|
var _green = false;
|
|
|
|
|
var _garish = false;
|
|
|
|
|
|
|
|
|
|
function _init() {
|
|
|
|
|
_buffer[0] = allocMemPages(0x20);
|
|
|
|
|
_buffer[1] = allocMemPages(0x20);
|
|
|
|
|
for (var idx = 0; idx < 0x2000; idx++) {
|
|
|
|
|
_buffer[0][idx] = 0; // idx & 0x2 ? 0xff : 0x00;
|
|
|
|
|
_buffer[1][idx] = 0; // idx & 0x2 ? 0xff : 0x00;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
_init();
|
|
|
|
|
|
|
|
|
|
return {
|
|
|
|
|
bank0: function() {
|
|
|
|
|
var self = this;
|
|
|
|
|
return {
|
|
|
|
|
start: function() {
|
|
|
|
|
return self._start();
|
|
|
|
|
},
|
|
|
|
|
end: function() {
|
|
|
|
|
return self._end();
|
|
|
|
|
},
|
|
|
|
|
read: function(page, off) {
|
|
|
|
|
return self._read(page, off, 0);
|
|
|
|
|
},
|
|
|
|
|
write: function(page, off, val) {
|
|
|
|
|
return self._write(page, off, val, 0);
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
},
|
|
|
|
|
|
|
|
|
|
bank1: function() {
|
|
|
|
|
var self = this;
|
|
|
|
|
return {
|
|
|
|
|
start: function() {
|
|
|
|
|
return self._start();
|
|
|
|
|
},
|
|
|
|
|
end: function() {
|
|
|
|
|
return self._end();
|
|
|
|
|
},
|
|
|
|
|
read: function(page, off) {
|
|
|
|
|
return self._read(page, off, 1);
|
|
|
|
|
},
|
|
|
|
|
write: function(page, off, val) {
|
|
|
|
|
return self._write(page, off, val, 1);
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
},
|
|
|
|
|
|
|
|
|
|
_start: function() { return (0x20 * _page); },
|
|
|
|
|
_end: function() { return (0x020 * _page) + 0x1f; },
|
|
|
|
|
_read: function(page, off, bank) {
|
|
|
|
|
var addr = (page << 8) | off, base = addr - 0x2000 * _page;
|
|
|
|
|
return _buffer[bank][base];
|
|
|
|
|
},
|
|
|
|
|
_write: function(page, off, val, bank) {
|
|
|
|
|
var addr = (page << 8) | off, base = addr - 0x2000 * _page,
|
|
|
|
|
idx, jdx;
|
|
|
|
|
if (_buffer[bank][base] == val && !_refreshing)
|
|
|
|
|
return;
|
|
|
|
|
_buffer[bank][base] = val;
|
|
|
|
|
|
|
|
|
|
if (bank !== 0 && !doubleHiresMode)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
var hbs = val & 0x80;
|
|
|
|
|
val &= 0x7f;
|
|
|
|
|
|
|
|
|
|
var col = (base % 0x80) % 0x28,
|
|
|
|
|
adj = off - col;
|
|
|
|
|
|
|
|
|
|
// 000001cd eabab000 -> 000abcde
|
|
|
|
|
var ab = (adj & 0x18),
|
|
|
|
|
cd = (page & 0x03) << 1,
|
|
|
|
|
e = adj >> 7;
|
|
|
|
|
|
|
|
|
|
var rowa = ab | cd | e,
|
|
|
|
|
rowb = base >> 10;
|
|
|
|
|
|
|
|
|
|
var dx, dy, data = pages[_page].data;
|
|
|
|
|
if ((rowa < 24) && (col < 40)) {
|
|
|
|
|
if (textMode || !hiresMode || (mixedMode && rowa > 19))
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
dy = rowa * 16 + rowb * 2;
|
|
|
|
|
var b0, b1, b2, b3, b4, c;
|
|
|
|
|
if (doubleHiresMode) {
|
|
|
|
|
// Every 4 bytes is 7 pixels
|
|
|
|
|
// 2 bytes per bank
|
|
|
|
|
var mod = col % 2, mcol = col - mod;
|
|
|
|
|
b0 = _buffer[1][base - mod];
|
|
|
|
|
b1 = _buffer[0][base - mod];
|
|
|
|
|
b2 = _buffer[1][base - mod + 1];
|
|
|
|
|
b3 = _buffer[0][base - mod + 1];
|
|
|
|
|
b4 = _buffer[1][base - mod + 2];
|
|
|
|
|
c = [((b0 & 0x0f) >> 0), // 0
|
|
|
|
|
((b0 & 0x70) >> 4) | ((b1 & 0x01) << 3), // 1
|
|
|
|
|
((b1 & 0x1e) >> 1), // 2
|
|
|
|
|
((b1 & 0x60) >> 5) | ((b2 & 0x03) << 2), // 3
|
|
|
|
|
((b2 & 0x3c) >> 2), // 4
|
|
|
|
|
((b2 & 0x40) >> 6) | ((b3 & 0x07) << 1), // 5
|
|
|
|
|
((b3 & 0x78) >> 3), // 6
|
|
|
|
|
0]; // 7
|
|
|
|
|
if (col < 39) {
|
|
|
|
|
c[7] = b4 & 0x0f;
|
|
|
|
|
}
|
|
|
|
|
dx = mcol * 14;
|
|
|
|
|
off = dx * 4 + dy * 280 * 4;
|
|
|
|
|
|
|
|
|
|
for (idx = 0; idx < 7; idx++) {
|
|
|
|
|
var dcolor = _green ? MONO : dcolors[r4[c[idx]]];
|
|
|
|
|
var bits = c[idx] | (c[idx + 1] << 4);
|
|
|
|
|
for (jdx = 0; jdx < 4; jdx++, off += 4) {
|
|
|
|
|
var saturate = !MONO && (_garish || bits & 0xe);
|
|
|
|
|
if (bits & 0x1 || saturate) {
|
|
|
|
|
data[off + 0] = dcolor[0];
|
|
|
|
|
data[off + 1] = dcolor[1];
|
|
|
|
|
data[off + 2] = dcolor[2];
|
|
|
|
|
} else {
|
|
|
|
|
data[off + 0] = 0; // dcolor[0] >> 1;
|
|
|
|
|
data[off + 1] = 0; // dcolor[1] >> 1;
|
|
|
|
|
data[off + 2] = 0; // dcolor[2] >> 1;
|
|
|
|
|
}
|
|
|
|
|
bits >>= 1;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
dx = col * 14 - 2;
|
|
|
|
|
b0 = col > 0 ? _buffer[bank][base - 1] : 0;
|
|
|
|
|
b2 = col < 39 ? _buffer[bank][base + 1] : 0;
|
|
|
|
|
val |= (b2 & 0x3) << 7;
|
|
|
|
|
var v0 = b0 & 0x20, v1 = b0 & 0x40, v2 = val & 0x1,
|
|
|
|
|
odd = !(col & 0x1), color,
|
|
|
|
|
oddCol = (hbs ? orangeCol : greenCol),
|
|
|
|
|
evenCol = (hbs ? blueCol : violetCol);
|
|
|
|
|
|
|
|
|
|
off = dx * 4 + dy * 280 * 4;
|
|
|
|
|
for (idx = 0; idx < 9; idx++, off += 8) {
|
|
|
|
|
val >>= 1;
|
|
|
|
|
if (v1) {
|
|
|
|
|
if (_green) {
|
|
|
|
|
color = MONO;
|
|
|
|
|
} else if (v0 || v2) {
|
|
|
|
|
color = whiteCol;
|
|
|
|
|
} else {
|
|
|
|
|
color = odd ? oddCol : evenCol;
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
if (_green) {
|
|
|
|
|
color = blackCol;
|
|
|
|
|
} else if (odd && v2 && (_garish || v0)) {
|
|
|
|
|
color = evenCol;
|
|
|
|
|
} else if (!odd && v0 && (_garish || v2)) {
|
|
|
|
|
color = oddCol;
|
|
|
|
|
} else {
|
|
|
|
|
color = blackCol;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (dx > -1 && dx < 560) {
|
|
|
|
|
data[off + 0] = color[0];
|
|
|
|
|
data[off + 1] = color[1];
|
|
|
|
|
data[off + 2] = color[2];
|
|
|
|
|
data[off + 4] = color[0];
|
|
|
|
|
data[off + 5] = color[1];
|
|
|
|
|
data[off + 6] = color[2];
|
|
|
|
|
}
|
|
|
|
|
dx += 2;
|
|
|
|
|
|
|
|
|
|
v0 = v1;
|
|
|
|
|
v1 = v2;
|
|
|
|
|
v2 = val & 0x01;
|
|
|
|
|
odd = !odd;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
refresh: function() {
|
|
|
|
|
var page, off, idx, addr = 0x2000 * _page;
|
|
|
|
|
_refreshing = true;
|
|
|
|
|
for (idx = 0; idx < 0x2000; idx++, addr++) {
|
|
|
|
|
page = addr >> 8;
|
|
|
|
|
off = addr & 0xff;
|
|
|
|
|
this._write(page, off, _buffer[0][idx], 0);
|
|
|
|
|
if (_80colMode)
|
|
|
|
|
this._write(page, off, _buffer[1][idx], 1);
|
|
|
|
|
}
|
|
|
|
|
_refreshing = false;
|
|
|
|
|
},
|
|
|
|
|
green: function(on) {
|
|
|
|
|
_green = on;
|
|
|
|
|
this.refresh();
|
|
|
|
|
},
|
|
|
|
|
garish: function(on) {
|
|
|
|
|
_garish = on;
|
|
|
|
|
this.refresh();
|
|
|
|
|
},
|
|
|
|
|
blit: function() {
|
|
|
|
|
context.putImageData(pages[_page], 0, 0);
|
|
|
|
|
},
|
|
|
|
|
getState: function() {
|
|
|
|
|
return {
|
|
|
|
|
page: _page,
|
|
|
|
|
green: _green,
|
|
|
|
|
garish: _garish,
|
|
|
|
|
buffer: [base64_encode(_buffer[0]),
|
|
|
|
|
base64_encode(_buffer[1])]
|
|
|
|
|
};
|
|
|
|
|
},
|
|
|
|
|
setState: function(state) {
|
|
|
|
|
_page = state.page;
|
|
|
|
|
_green = state.green;
|
|
|
|
|
_garish = state.garish;
|
|
|
|
|
_buffer[0] = base64_decode(state.buffer[0]);
|
|
|
|
|
_buffer[1] = base64_decode(state.buffer[1]);
|
|
|
|
|
|
|
|
|
|
this.refresh();
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function VideoModes(gr,hgr,gr2,hgr2) {
|
|
|
|
|
var _grs = [gr, gr2];
|
|
|
|
|
var _hgrs = [hgr, hgr2];
|
|
|
|
|
|
|
|
|
|
function _refresh() {
|
|
|
|
|
gr.refresh();
|
|
|
|
|
gr2.refresh();
|
|
|
|
|
hgr.refresh();
|
|
|
|
|
hgr2.refresh();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return {
|
|
|
|
|
refresh: function() {
|
|
|
|
|
_refresh();
|
|
|
|
|
},
|
|
|
|
|
reset: function() {
|
|
|
|
|
textMode = true;
|
|
|
|
|
mixedMode = false;
|
|
|
|
|
hiresMode = true;
|
|
|
|
|
pageMode = 1;
|
|
|
|
|
_80colMode = false;
|
|
|
|
|
altCharMode = false;
|
|
|
|
|
doubleHiresMode = false;
|
|
|
|
|
|
|
|
|
|
_refresh();
|
|
|
|
|
},
|
|
|
|
|
text: function(on) {
|
|
|
|
|
var old = textMode;
|
|
|
|
|
textMode = on;
|
|
|
|
|
if (old != on) {
|
|
|
|
|
_refresh();
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
_80col: function(on) {
|
|
|
|
|
var old = _80colMode;
|
|
|
|
|
_80colMode = on;
|
|
|
|
|
if (old != on) {
|
|
|
|
|
_refresh();
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
altchar: function(on) {
|
|
|
|
|
var old = altCharMode;
|
|
|
|
|
altCharMode = on;
|
|
|
|
|
if (old != on) {
|
|
|
|
|
_refresh();
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
hires: function(on) {
|
|
|
|
|
var old = hiresMode;
|
|
|
|
|
hiresMode = on;
|
|
|
|
|
if (old != on) {
|
|
|
|
|
_refresh();
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
doublehires: function(on) {
|
|
|
|
|
var old = doubleHiresMode;
|
|
|
|
|
doubleHiresMode = on;
|
|
|
|
|
if (old != on) {
|
|
|
|
|
if (on) {
|
|
|
|
|
this.page(1);
|
|
|
|
|
}
|
|
|
|
|
_refresh();
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
mixed: function(on) {
|
|
|
|
|
var old = mixedMode;
|
|
|
|
|
mixedMode = on;
|
|
|
|
|
if (old != on) {
|
|
|
|
|
_refresh();
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
page: function(pageNo) {
|
|
|
|
|
pageMode = pageNo;
|
|
|
|
|
},
|
|
|
|
|
isText: function() {
|
|
|
|
|
return textMode;
|
|
|
|
|
},
|
|
|
|
|
isMixed: function() {
|
|
|
|
|
return mixedMode;
|
|
|
|
|
},
|
|
|
|
|
isPage2: function() {
|
|
|
|
|
return pageMode == 2;
|
|
|
|
|
},
|
|
|
|
|
isHires: function() {
|
|
|
|
|
return hiresMode;
|
|
|
|
|
},
|
|
|
|
|
is80Col: function() {
|
|
|
|
|
return _80colMode;
|
|
|
|
|
},
|
|
|
|
|
isAltChar: function() {
|
|
|
|
|
return altCharMode;
|
|
|
|
|
},
|
|
|
|
|
setContext: function(c) {
|
|
|
|
|
context = c;
|
|
|
|
|
|
|
|
|
|
pages[1] = c.createImageData(560, 192);
|
|
|
|
|
pages[2] = c.createImageData(560, 192);
|
|
|
|
|
for (var idx = 0; idx < 560 * 192 * 4; idx++) {
|
|
|
|
|
pages[1].data[idx] = 0xff;
|
|
|
|
|
pages[2].data[idx] = 0xff;
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
blit: function() {
|
|
|
|
|
if (hiresMode && !textMode) {
|
|
|
|
|
_hgrs[pageMode - 1].blit();
|
|
|
|
|
} else {
|
|
|
|
|
_grs[pageMode - 1].blit();
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
getState: function() {
|
|
|
|
|
return {
|
|
|
|
|
grs: [_grs[0].getState(), _grs[1].getState()],
|
|
|
|
|
hgrs: [_hgrs[0].getState(), _hgrs[1].getState()],
|
|
|
|
|
textMode: textMode,
|
|
|
|
|
mixedMode: mixedMode,
|
|
|
|
|
hiresMode: hiresMode,
|
|
|
|
|
pageMode: pageMode,
|
|
|
|
|
_80colMode: _80colMode,
|
|
|
|
|
altCharMode: altCharMode,
|
|
|
|
|
doubleHiresMode: doubleHiresMode
|
|
|
|
|
};
|
|
|
|
|
},
|
|
|
|
|
setState: function(state) {
|
|
|
|
|
textMode = state.textMode;
|
|
|
|
|
mixedMode = state.mixedMode;
|
|
|
|
|
hiresMode = state.hiresMode;
|
|
|
|
|
pageMode = state.pageMode;
|
|
|
|
|
_80colMode = state._80colMode;
|
|
|
|
|
altCharMode = state.altCharMode;
|
|
|
|
|
doubleHiresMode = state.doubleHiresMode;
|
|
|
|
|
|
|
|
|
|
_grs[0].setState(state.grs[0]);
|
|
|
|
|
_grs[1].setState(state.grs[1]);
|
|
|
|
|
_hgrs[0].setState(state.hgrs[0]);
|
|
|
|
|
_hgrs[1].setState(state.hgrs[1]);
|
|
|
|
|
},
|
|
|
|
|
green: function(on) {
|
|
|
|
|
_grs[0].green(on);
|
|
|
|
|
_grs[1].green(on);
|
|
|
|
|
_hgrs[0].green(on);
|
|
|
|
|
_hgrs[1].green(on);
|
|
|
|
|
},
|
|
|
|
|
garish: function(on) {
|
|
|
|
|
_hgrs[0].garish(on);
|
|
|
|
|
_hgrs[1].garish(on);
|
|
|
|
|
}
|
|
|
|
|
};
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
