mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-12-13 00:29:25 +00:00
476 lines
15 KiB
TypeScript
476 lines
15 KiB
TypeScript
"use strict";
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import { Platform, BaseZ80Platform } from "../baseplatform";
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import { PLATFORMS, RAM, newAddressDecoder, padBytes, noise, setKeyboardFromMap, AnimationTimer, RasterVideo, Keys, makeKeycodeMap } from "../emu";
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import { hex, lzgmini, stringToByteArray, rgb2bgr, clamp } from "../util";
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import { MasterAudio, AY38910_Audio } from "../audio";
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const ASTROCADE_PRESETS = [
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{id:'01-helloworlds.asm', name:'Hello World'},
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{id:'02-telephone.asm', name:'Telephone'},
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{id:'03-horcbpal.asm', name:'Paddle Demo'},
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{id:'cosmic.c', name:'Cosmic Impalas Game'},
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];
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const ASTROCADE_BIOS_PRESETS = [
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{id:'bios.c', name:'BIOS'},
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];
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// TODO: fix keys, more controllers, vibrato/noise, border color, debug info, rotate
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// http://atariage.com/forums/topic/251416-programming-the-bally-arcadeastrocade/
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const ASTROCADE_KEYCODE_MAP = makeKeycodeMap([
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// player 1
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[Keys.VK_UP, 0x10, 0x1],
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[Keys.VK_DOWN, 0x10, 0x2],
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[Keys.VK_LEFT, 0x10, 0x4],
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[Keys.VK_RIGHT, 0x10, 0x8],
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[Keys.VK_SPACE, 0x10, 0x10],
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// keypad $14
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[Keys.VK_P, 0x14, 0x1],
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[Keys.VK_SLASH, 0x14, 0x2],
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[Keys.VK_X, 0x14, 0x4],
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[Keys.VK_MINUS, 0x14, 0x8],
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[Keys.VK_COMMA, 0x14, 0x10],
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[Keys.VK_EQUALS,0x14, 0x20],
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// keypad $15
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[Keys.VK_Z, 0x15, 0x1],
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[Keys.VK_H, 0x15, 0x2],
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[Keys.VK_9, 0x15, 0x4],
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[Keys.VK_6, 0x15, 0x8],
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[Keys.VK_3, 0x15, 0x10],
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[Keys.VK_PERIOD,0x15, 0x20],
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// keypad $16
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[Keys.VK_A, 0x16, 0x1],
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[Keys.VK_S, 0x16, 0x2],
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[Keys.VK_8, 0x16, 0x4],
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[Keys.VK_5, 0x16, 0x8],
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[Keys.VK_2, 0x16, 0x10],
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[Keys.VK_0, 0x16, 0x20],
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// keypad $17
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[Keys.VK_C, 0x17, 0x1],
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[Keys.VK_R, 0x17, 0x2],
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[Keys.VK_7, 0x17, 0x4],
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[Keys.VK_4, 0x17, 0x8],
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[Keys.VK_1, 0x17, 0x10],
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[Keys.VK_E, 0x17, 0x20],
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]);
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const _BallyAstrocadePlatform = function(mainElement, arcade) {
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var cpu, ram, membus, iobus, rom, bios;
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var video, timer, pixels;
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var audio, psg;
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//var watchdog_counter;
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const swidth = arcade ? 320 : 160;
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const sheight = arcade ? 204 : 102;
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const swbytes = Math.floor(swidth / 4);
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const cpuFrequency = 1789000;
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const cpuCyclesPerLine = cpuFrequency/(60*sheight); // TODO: wait states?
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const INITIAL_WATCHDOG = 256;
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const PIXEL_ON = 0xffeeeeee;
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const PIXEL_OFF = 0xff000000;
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// state variables
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var inputs = new Uint8Array(0x20);
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var magicop = 0;
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var xpand = 0;
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var xplower = false;
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var shift2 = 0;
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var horcb = 0;
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var inmod = 0;
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var inlin = 0;
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var infbk = 0;
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var verbl = sheight;
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var palette = new Uint32Array(8);
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// default palette
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for (var i=0; i<8; i++)
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palette[i] = ASTROCADE_PALETTE[i];
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var refreshlines = 0;
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function ramwrite(a:number, v:number) {
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ram.mem[a] = v;
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ramupdate(a, v);
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}
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function ramupdate(a:number, v:number) {
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var ofs = a*4+3; // 4 pixels per byte
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for (var i=0; i<4; i++) {
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var lr = ((a % swbytes) >= (horcb & 0x3f)) ? 0 : 4;
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pixels[ofs--] = palette[lr + (v & 3)];
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v >>= 2;
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}
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}
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function refreshline(y:number) {
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var ofs = y*swidth/4;
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for (var i=0; i<swidth/4; i++)
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ramupdate(ofs+i, ram.mem[ofs+i]);
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}
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function magicwrite(a:number, v:number) {
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// expand
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if (magicop & 0x8) {
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var v2 = 0;
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if (!xplower)
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v >>= 4;
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for (var i=0; i<4; i++) {
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var pix = (v&1) ? ((xpand>>2)&3) : (xpand&3);
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v2 |= pix << (i*2);
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v >>= 1;
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}
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v = v2;
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xplower = !xplower;
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}
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// shift
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var sh = (magicop & 3) << 1;
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var v2 = (v >> sh) | shift2;
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shift2 = (v << (8-sh)) & 0xff;
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v = v2;
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// flop
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if (magicop & 0x40) {
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var v2 = 0;
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for (var i=0; i<4; i++) {
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v2 |= (v & 3) << (6-i*2);
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v >>= 2;
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}
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v = v2;
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}
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// or/xor
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if (magicop & 0x30) {
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var oldv = ram.mem[a];
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if (magicop & 0x10)
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v |= oldv;
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if (magicop & 0x20)
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v ^= oldv; // TODO: what if both?
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// collision detect
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var icpt = 0;
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for (var i=0; i<8; i+=2) {
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icpt <<= 1;
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// pixel changed from off to on?
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if ( !((oldv>>i)&3) && ((v>>i)&3) )
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icpt |= 1;
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}
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// upper 4 bits persist, lower are just since last write
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inputs[8] = (inputs[8] & 0xf0) | icpt | (icpt<<4);
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}
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// commit write to ram/screen
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ramwrite(a, v);
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}
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function setpalette(a:number, v:number) {
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palette[a&7] = ASTROCADE_PALETTE[v&0xff];
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refreshall();
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}
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function setbordercolor() {
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var col = horcb >> 6;
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// TODO
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}
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function refreshall() {
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refreshlines = sheight;
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}
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class BallyAstrocadePlatform extends BaseZ80Platform implements Platform {
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getPresets() {
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return ASTROCADE_PRESETS;
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}
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start = function() {
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ram = new RAM(arcade ? 0x5000 : 0x1000);
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var lzgrom = window['ASTROCADE_LZGROM'] || window['ASTROCADE_BIOS_LZG'];
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if (lzgrom)
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bios = new lzgmini().decode(stringToByteArray(atob(lzgrom)));
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else
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bios = padBytes([0xf3, 0x31, 0x00, 0x50, 0x21, 0x05, 0x20, 0x7e, 0x23, 0x66, 0x6f, 0xe9], 0x2000); // SP=$5000, jump to ($2005)
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if (!arcade) {
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// game console
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membus = {
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read: newAddressDecoder([
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[0x0000, 0x1fff, 0x1fff, function(a) { return bios[a]; }],
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[0x2000, 0x3fff, 0x1fff, function(a) { return rom ? rom[a] : 0; }],
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[0x4000, 0x4fff, 0xfff, function(a) { return ram.mem[a]; }],
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]),
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write: newAddressDecoder([
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[0x4000, 0x4fff, 0xfff, ramwrite],
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[0x0000, 0x3fff, 0x3fff, magicwrite],
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]),
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isContended: function() { return false; },
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};
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} else {
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// arcade game
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membus = {
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read: newAddressDecoder([
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[0x4000, 0x7fff, 0x3fff, function(a) { return ram.mem[a]; }], // screen RAM
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[0xd000, 0xdfff, 0xfff, function(a) { return ram.mem[a+0x4000]; }], // static RAM
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[0x0000, 0xafff, 0xffff, function(a) { return rom ? rom[a] : 0; }], // ROM (0-3fff,8000-afff)
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]),
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write: newAddressDecoder([
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[0x4000, 0x7fff, 0x3fff, ramwrite],
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[0xd000, 0xdfff, 0xfff, function(a,v) { ramwrite(a+0x4000, v); } ], // static RAM
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[0x0000, 0x3fff, 0x3fff, magicwrite],
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]),
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isContended: function() { return false; },
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};
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}
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iobus = {
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read: function(addr) {
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addr &= 0x1f;
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var rtn = inputs[addr];
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if (addr == 8)
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inputs[addr] = 0;
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// $10 = watchdog
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return rtn;
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},
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write: function(addr, val) {
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addr &= 0x1f;
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val &= 0xff;
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switch (addr) {
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case 0:
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case 1:
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case 2:
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case 3:
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case 4:
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case 5:
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case 6:
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case 7:
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setpalette(addr,val);
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break;
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case 9: // HORCB (horizontal boundary byte)
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horcb = val;
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setbordercolor();
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refreshall();
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break;
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case 0xa: // VERBL (vertical blank)
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verbl = arcade ? val : val >> 1;
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refreshall();
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break;
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case 0xb: // OTIR (set palette)
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setpalette(cpu.getBC()>>8, membus.read(cpu.getHL()));
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break;
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case 0xc: // magic register
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magicop = val;
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shift2 = 0;
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break;
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case 0xd: // INFBK (interrupt feedback)
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infbk = val;
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break;
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case 0xe: // INMOD (interrupt enable)
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inmod = val;
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break;
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case 0xf: // INLIN (interrupt line)
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inlin = arcade ? val : val >> 1;
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break;
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case 0x10:
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case 0x11:
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case 0x12:
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case 0x13:
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case 0x14:
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case 0x15:
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case 0x16:
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case 0x17:
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psg.setACRegister(addr, val);
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break;
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case 0x18:
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psg.setACRegister(cpu.getBC()>>8, membus.read(cpu.getHL()));
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break;
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case 0x19: // XPAND
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xpand = val;
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xplower = false;
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break;
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default:
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console.log('IO write', hex(addr,4), hex(val,2));
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break;
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}
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}
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};
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cpu = this.newCPU(membus, iobus);
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audio = new MasterAudio();
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psg = new AstrocadeAudio(audio);
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video = new RasterVideo(mainElement,swidth,sheight,{});
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video.create();
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video.setupMouseEvents();
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var idata = video.getFrameData();
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setKeyboardFromMap(video, inputs, ASTROCADE_KEYCODE_MAP);
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pixels = video.getFrameData();
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timer = new AnimationTimer(60, this.nextFrame.bind(this));
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}
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readAddress(addr) {
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return membus.read(addr);
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}
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loadControls() {
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inputs[0x1c] = video.paddle_x & 0xff;
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inputs[0x1d] = video.paddle_y & 0xff;
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}
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advance(novideo : boolean) {
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this.loadControls();
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for (var sl=0; sl<sheight; sl++) {
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//console.log(sl, hex(cpu.getPC(),4), cpu.saveState());
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this.runCPU(cpu, cpuCyclesPerLine);
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if (sl == inlin && (inmod & 0x8)) {
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this.requestInterrupt(cpu, infbk);
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}
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if (refreshlines>0) {
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refreshline(sl);
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refreshlines--;
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}
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}
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if (!novideo) {
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video.updateFrame(0, 0, 0, 0, swidth, verbl);
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}
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/*
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if (watchdog_counter-- <= 0) {
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console.log("WATCHDOG FIRED"); // TODO: alert on video
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this.reset();
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}
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*/
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}
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loadROM(title, data) {
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rom = padBytes(data, arcade ? 0xb000 : 0x2000);
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this.reset();
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}
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loadBIOS(title, data) {
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bios = padBytes(data, 0x2000);
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this.reset();
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}
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loadState(state) {
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cpu.loadState(state.c); // TODO: this causes problems on reset+debug
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ram.mem.set(state.b);
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palette.set(state.palette);
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magicop = state.magicop;
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xpand = state.xpand;
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xplower = state.xplower;
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shift2 = state.shift2;
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horcb = state.horcb;
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inmod = state.inmod;
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inlin = state.inlin;
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infbk = state.infbk;
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verbl = state.verbl;
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this.loadControlsState(state);
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refreshall();
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}
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saveState() {
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return {
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c: this.getCPUState(),
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b: ram.mem.slice(0),
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in: inputs.slice(0),
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palette: palette.slice(0),
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magicop: magicop,
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xpand: xpand,
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xplower: xplower,
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shift2: shift2,
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horcb: horcb,
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inmod: inmod,
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inlin: inlin,
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infbk: infbk,
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verbl: verbl,
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};
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}
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loadControlsState(state) {
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inputs.set(state.in);
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}
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saveControlsState() {
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return {
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in:inputs.slice(0)
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};
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}
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getCPUState() {
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return cpu.saveState();
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}
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isRunning() {
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return timer && timer.isRunning();
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}
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pause() {
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timer.stop();
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audio.stop();
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}
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resume() {
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timer.start();
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audio.start();
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}
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reset() {
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cpu.reset();
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cpu.setTstates(0);
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//watchdog_counter = INITIAL_WATCHDOG;
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}
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}
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return new BallyAstrocadePlatform();
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}
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/////
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class AstrocadeAudio extends AY38910_Audio {
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setACRegister(addr : number, val : number) {
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addr &= 0x7;
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val &= 0xff;
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//console.log(addr,val);
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switch (addr) {
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case 0:
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this.psg.setClock(1789000 * 16 / (val + 1));
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this.psg.writeRegisterAY(7, 0x7 ^ 0xff); // disable noise
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break;
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case 1:
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case 2:
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case 3:
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var i = (addr-1)*2;
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var j = val*2+1;
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this.psg.writeRegisterAY(i, j&0xff); // freq lo
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this.psg.writeRegisterAY(i+1, (j>>8)&0xff); // freq hi
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break;
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case 5:
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this.psg.writeRegisterAY(10, val & 0xf); // tone c vol
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break;
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case 6:
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this.psg.writeRegisterAY(8, val & 0xf); // tone a vol
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this.psg.writeRegisterAY(9, (val>>4) & 0xf); // tone b vol
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break;
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}
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}
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}
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const _BallyArcadePlatform = function(mainElement) {
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this.__proto__ = new (_BallyAstrocadePlatform as any)(mainElement, true);
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// TODO: inputs[0x13] = 0xfe; // dip switch on arcade
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// TODO: arcade controls, bit blit
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var _in = this.saveControlsState();
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_in.in[0x10] = 0xff; // switches
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_in.in[0x13] = 0xfe; // dip switches
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this.loadControlsState(_in);
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}
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const _BallyAstrocadeBIOSPlatform = function(mainElement) {
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this.__proto__ = new (_BallyAstrocadePlatform as any)(mainElement);
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this.getPresets = function() {
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return ASTROCADE_BIOS_PRESETS;
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}
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this.loadROM = this.loadBIOS;
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}
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/////
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PLATFORMS['astrocade'] = _BallyAstrocadePlatform;
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PLATFORMS['astrocade-bios'] = _BallyAstrocadeBIOSPlatform;
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PLATFORMS['astrocade-arcade'] = _BallyArcadePlatform;
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//http://glankonian.com/~lance/astrocade_palette.html
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var ASTROCADE_PALETTE = [0x000000,0x242424,0x484848,0x6D6D6D,0x919191,0xB6B6B6,0xDADADA,0xFFFFFF,0x2500BB,0x4900E0,0x6E11FF,0x9235FF,0xB75AFF,0xDB7EFF,0xFFA3FF,0xFFC7FF,0x4900B0,0x6D00D5,0x9201F9,0xB625FF,0xDA4AFF,0xFF6EFF,0xFF92FF,0xFFB7FF,0x6A009F,0x8E00C3,0xB300E7,0xD718FF,0xFB3CFF,0xFF61FF,0xFF85FF,0xFFA9FF,0x870087,0xAB00AB,0xD000D0,0xF40EF4,0xFF32FF,0xFF56FF,0xFF7BFF,0xFF9FFF,0x9F006A,0xC3008E,0xE700B3,0xFF07D7,0xFF2CFB,0xFF50FF,0xFF74FF,0xFF99FF,0xB00049,0xD5006D,0xF90092,0xFF05B6,0xFF29DA,0xFF4DFF,0xFF72FF,0xFF96FF,0xBB0025,0xE00049,0xFF006E,0xFF0692,0xFF2AB7,0xFF4FDB,0xFF73FF,0xFF98FF,0xBF0000,0xE30024,0xFF0048,0xFF0B6D,0xFF3091,0xFF54B6,0xFF79DA,0xFF9DFF,0xBB0000,0xE00000,0xFF0023,0xFF1447,0xFF396C,0xFF5D90,0xFF82B5,0xFFA6D9,0xB00000,0xD50000,0xF90000,0xFF2124,0xFF4548,0xFF6A6C,0xFF8E91,0xFFB3B5,0x9F0000,0xC30000,0xE70C00,0xFF3003,0xFF5527,0xFF794B,0xFF9E70,0xFFC294,0x870000,0xAB0000,0xD01E00,0xF44200,0xFF670A,0xFF8B2E,0xFFAF53,0xFFD477,0x6A0000,0x8E0D00,0xB33100,0xD75600,0xFB7A00,0xFF9E17,0xFFC33B,0xFFE75F,0x490000,0x6D2100,0x924500,0xB66A00,0xDA8E00,0xFFB305,0xFFD729,0xFFFC4E,0x251100,0x493500,0x6E5A00,0x927E00,0xB7A300,0xDBC700,0xFFEB1E,0xFFFF43,0x002500,0x244900,0x486D00,0x6D9200,0x91B600,0xB6DB00,0xDAFF1B,0xFFFF3F,0x003700,0x005B00,0x238000,0x47A400,0x6CC900,0x90ED00,0xB5FF1E,0xD9FF43,0x004700,0x006C00,0x009000,0x24B400,0x48D900,0x6CFD05,0x91FF29,0xB5FF4E,0x005500,0x007900,0x009D00,0x03C200,0x27E600,0x4BFF17,0x70FF3B,0x94FF5F,0x005F00,0x008300,0x00A800,0x00CC00,0x0AF00A,0x2EFF2E,0x53FF53,0x77FF77,0x006500,0x008A00,0x00AE00,0x00D203,0x00F727,0x17FF4B,0x3BFF70,0x5FFF94,0x006800,0x008C00,0x00B100,0x00D524,0x00F948,0x05FF6C,0x29FF91,0x4EFFB5,0x006600,0x008B00,0x00AF23,0x00D447,0x00F86C,0x00FF90,0x1EFFB5,0x43FFD9,0x006100,0x008524,0x00AA48,0x00CE6D,0x00F391,0x00FFB6,0x1BFFDA,0x3FFFFE,0x005825,0x007C49,0x00A16E,0x00C592,0x00EAB7,0x00FFDB,0x1EFFFF,0x43FFFF,0x004B49,0x00706D,0x009492,0x00B9B6,0x00DDDA,0x05FFFF,0x29FFFF,0x4EFFFF,0x003C6A,0x00608E,0x0085B3,0x00A9D7,0x00CEFB,0x17F2FF,0x3BFFFF,0x5FFFFF,0x002A87,0x004FAB,0x0073D0,0x0097F4,0x0ABCFF,0x2EE0FF,0x53FFFF,0x77FFFF,0x00179F,0x003BC3,0x0060E7,0x0384FF,0x27A8FF,0x4BCDFF,0x70F1FF,0x94FFFF,0x0002B0,0x0027D5,0x004BF9,0x2470FF,0x4894FF,0x6CB9FF,0x91DDFF,0xB5FFFF,0x0000BB,0x0013E0,0x2337FF,0x475BFF,0x6C80FF,0x90A4FF,0xB5C9FF,0xD9EDFF];
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// swap palette RGB to BGR
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for (var i=0; i<256; i++) {
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var x = ASTROCADE_PALETTE[i];
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ASTROCADE_PALETTE[i] = rgb2bgr(x) | 0xff000000;
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}
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//var ASTROCADE_BIOS_LZG = decodeURIComponent();
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