added coleco machine, base VDP

This commit is contained in:
Steven Hugg 2019-08-25 12:15:22 -04:00
parent dba3060535
commit 67c1223dbf
6 changed files with 263 additions and 209 deletions

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@ -88,6 +88,7 @@ function require(modname) {
<script src="gen/devices.js"></script>
<script src="gen/cpu/MOS6502.js"></script>
<script src="gen/cpu/ZilogZ80.js"></script>
<script src="gen/machine/vdp_z80.js"></script>
<script src="lib/liblzg.js"></script>

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@ -546,6 +546,7 @@ function require(modname) {
<script src="gen/devices.js"></script>
<script src="gen/cpu/MOS6502.js"></script>
<script src="gen/cpu/ZilogZ80.js"></script>
<script src="gen/machine/vdp_z80.js"></script>
<script>
// submenus open on click + hover

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@ -1730,6 +1730,9 @@ export class Z80 implements CPU, InstructionBased, IOBusConnected, SavesState<Z8
interrupt(itype:number) {
this.cpu.requestInterrupt(itype);
}
NMI() {
this.cpu.nonMaskableInterrupt();
}
getSP() {
return this.cpu.getSP();
}

155
src/machine/coleco.ts Normal file
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@ -0,0 +1,155 @@
import { Z80, Z80State } from "../cpu/ZilogZ80";
import { BasicScanlineMachine } from "../devices";
import { BaseZ80VDPBasedMachine } from "./vdp_z80";
import { KeyFlags, newAddressDecoder, padBytes, Keys, makeKeycodeMap, newKeyboardHandler } from "../emu";
import { hex, lzgmini, stringToByteArray } from "../util";
import { TssChannelAdapter, MasterAudio, SN76489_Audio } from "../audio";
import { TMS9918A } from "../video/tms9918a";
// http://www.colecovision.eu/ColecoVision/development/tutorial1.shtml
// http://www.colecovision.eu/ColecoVision/development/libcv.shtml
// http://www.kernelcrash.com/blog/recreating-the-colecovision/2016/01/27/
// http://www.atarihq.com/danb/files/CV-Tech.txt
// http://www.atarihq.com/danb/files/CV-Sound.txt
// http://www.colecoboxart.com/faq/FAQ05.htm
// http://www.theadamresource.com/manuals/technical/Jeffcoleco.html
// http://bifi.msxnet.org/msxnet//tech/tms9918a.txt
// http://www.colecovision.dk/tools.htm?refreshed
// http://www.theadamresource.com/manuals/technical/ColecoVision%20Coding%20Guide.pdf
// http://www.unige.ch/medecine/nouspikel/ti99/tms9918a.htm
// http://map.grauw.nl/articles/vdp_tut.php
// http://www.msxcomputermagazine.nl/mccw/91/msx1demos1/en.html
// http://www.segordon.com/colecovision.php
// http://samdal.com/svvideo.htm
// https://github.com/tursilion/convert9918
// http://www.harmlesslion.com/cgi-bin/showprog.cgi?ColecoVision
var COLECOVISION_KEYCODE_MAP = makeKeycodeMap([
[Keys.UP, 0, 0x1],
[Keys.DOWN, 0, 0x4],
[Keys.LEFT, 0, 0x8],
[Keys.RIGHT, 0, 0x2],
[Keys.A, 0, 0x40],
[Keys.B, 1, 0x40],
[Keys.P2_UP, 2, 0x1],
[Keys.P2_DOWN, 2, 0x4],
[Keys.P2_LEFT, 2, 0x8],
[Keys.P2_RIGHT, 2, 0x2],
[Keys.P2_A, 2, 0x40],
[Keys.P2_B, 3, 0x40],
]);
const audioOversample = 2;
export class ColecoVision extends BaseZ80VDPBasedMachine {
defaultROMSize = 0x8000;
ram = new Uint8Array(0x400);
bios: Uint8Array;
keypadMode: boolean;
constructor() {
super();
this.init(this, this.newIOBus(), COLECOVISION_KEYCODE_MAP, new SN76489_Audio(new MasterAudio()));
this.bios = new lzgmini().decode(stringToByteArray(atob(COLECO_BIOS_LZG)));
}
read = newAddressDecoder([
[0x0000, 0x1fff, 0x1fff, (a) => { return this.bios ? this.bios[a] : 0; }],
[0x6000, 0x7fff, 0x03ff, (a) => { return this.ram[a]; }],
[0x8000, 0xffff, 0x7fff, (a) => { return this.rom ? this.rom[a] : 0; }],
]);
write = newAddressDecoder([
[0x6000, 0x7fff, 0x03ff, (a, v) => { this.ram[a] = v; }],
]);
newIOBus() {
return {
read: (addr:number):number => {
addr &= 0xff;
//console.log('IO read', hex(addr,4));
switch (addr) {
case 0xfc: return this.inputs[this.keypadMode ? 1 : 0] ^ 0xff;
case 0xff: return this.inputs[this.keypadMode ? 3 : 2] ^ 0xff;
}
if (addr >= 0xa0 && addr <= 0xbf) {
if (addr & 1)
return this.vdp.readStatus();
else
return this.vdp.readData();
}
return 0;
},
write: (addr:number, val:number) => {
addr &= 0xff;
val &= 0xff;
//console.log('IO write', hex(addr,4), hex(val,2));
switch (addr >> 4) {
case 0x8: case 0x9: this.keypadMode = true; break;
case 0xc: case 0xd: this.keypadMode = false; break;
case 0xa: case 0xb:
if (addr & 1)
return this.vdp.writeAddress(val);
else
return this.vdp.writeData(val);
case 0xf: this.psg.setData(val); break;
}
}
};
}
loadState(state) {
super.loadState(state);
this.keypadMode = state['kpm'];
}
saveState() {
var state = super.saveState();
state['kpm'] = this.keypadMode;
return state;
}
reset() {
super.reset();
this.keypadMode = false;
}
}
var COLECO_BIOS_LZG = `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=`;

94
src/machine/vdp_z80.ts Normal file
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@ -0,0 +1,94 @@
import { Z80, Z80State } from "../cpu/ZilogZ80";
import { BasicScanlineMachine, Bus } from "../devices";
import { newAddressDecoder, newKeyboardHandler } from "../emu";
import { TssChannelAdapter } from "../audio";
import { TMS9918A } from "../video/tms9918a";
const audioOversample = 2;
export abstract class BaseZ80VDPBasedMachine extends BasicScanlineMachine {
cpuFrequency = 3579545; // MHz
canvasWidth = 304;
numTotalScanlines = 262;
numVisibleScanlines = 240;
cpuCyclesPerLine = this.cpuFrequency / (262*60);
sampleRate = 262*60*audioOversample;
overscan = true;
cpu: Z80 = new Z80();
vdp: TMS9918A;
psg;
handler;
audioadapter;
init(membus:Bus, iobus:Bus, keycodemap, psg) {
this.connectCPUMemoryBus(membus);
this.connectCPUIOBus(iobus);
this.handler = newKeyboardHandler(this.inputs, keycodemap);
this.psg = psg;
this.audioadapter = psg && new TssChannelAdapter(psg.psg, audioOversample, this.sampleRate);
}
setKeyInput(key:number, code:number, flags:number) : void {
this.handler(key,code,flags);
}
connectVideo(pixels) {
super.connectVideo(pixels);
this.vdp = this.newVDP(this.pixels);
}
newVDP(frameData) {
var cru = {
setVDPInterrupt: (b) => {
if (b) {
this.cpu.NMI();
} else {
// TODO: reset interrupt?
}
}
};
return new TMS9918A(frameData, cru, true);
}
startScanline() {
this.audio && this.audioadapter && this.audioadapter.generate(this.audio);
}
drawScanline() {
this.vdp.drawScanline(this.scanline);
}
loadState(state) {
super.loadState(state);
this.vdp.restoreState(state['vdp']);
}
saveState() {
var state = super.saveState();
state['vdp'] = this.vdp.getState();
return state;
}
reset() {
super.reset();
this.vdp.reset();
this.psg.reset();
}
getDebugCategories() {
return ['VDP'];
}
getDebugInfo(category, state) {
switch (category) {
case 'VDP': return this.vdpStateToLongString(state.vdp);
}
}
vdpStateToLongString(ppu) {
return this.vdp.getRegsString();
}
readVRAMAddress(a : number) : number {
return this.vdp.ram[a & 0x3fff];
}
}

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@ -1,28 +1,7 @@
"use strict";
import { Platform, BaseMAMEPlatform, BasicZ80ScanlinePlatform, getToolForFilename_z80 } from "../baseplatform";
import { PLATFORMS, newAddressDecoder, padBytes, noise, setKeyboardFromMap, AnimationTimer, RasterVideo, Keys, makeKeycodeMap } from "../emu";
import { hex, lzgmini, stringToByteArray } from "../util";
import { MasterAudio, SN76489_Audio } from "../audio";
import { TMS9918A } from "../video/tms9918a";
// http://www.colecovision.eu/ColecoVision/development/tutorial1.shtml
// http://www.colecovision.eu/ColecoVision/development/libcv.shtml
// http://www.kernelcrash.com/blog/recreating-the-colecovision/2016/01/27/
// http://www.atarihq.com/danb/files/CV-Tech.txt
// http://www.atarihq.com/danb/files/CV-Sound.txt
// http://www.colecoboxart.com/faq/FAQ05.htm
// http://www.theadamresource.com/manuals/technical/Jeffcoleco.html
// http://bifi.msxnet.org/msxnet//tech/tms9918a.txt
// http://www.colecovision.dk/tools.htm?refreshed
// http://www.theadamresource.com/manuals/technical/ColecoVision%20Coding%20Guide.pdf
// http://www.unige.ch/medecine/nouspikel/ti99/tms9918a.htm
// http://map.grauw.nl/articles/vdp_tut.php
// http://www.msxcomputermagazine.nl/mccw/91/msx1demos1/en.html
// http://www.segordon.com/colecovision.php
// http://samdal.com/svvideo.htm
// https://github.com/tursilion/convert9918
// http://www.harmlesslion.com/cgi-bin/showprog.cgi?ColecoVision
import { ColecoVision } from "../machine/coleco";
import { Platform, BaseZ80MachinePlatform, BaseMAMEPlatform, getToolForFilename_z80 } from "../baseplatform";
import { PLATFORMS } from "../emu";
export var ColecoVision_PRESETS = [
{ id: 'text.c', name: 'Text Mode' },
@ -41,194 +20,15 @@ export var ColecoVision_PRESETS = [
{ id: 'climber.c', name: 'Platform Game' },
];
var COLECOVISION_KEYCODE_MAP = makeKeycodeMap([
[Keys.UP, 0, 0x1],
[Keys.DOWN, 0, 0x4],
[Keys.LEFT, 0, 0x8],
[Keys.RIGHT, 0, 0x2],
[Keys.A, 0, 0x40],
[Keys.B, 1, 0x40],
class ColecoVisionPlatform extends BaseZ80MachinePlatform<ColecoVision> implements Platform {
[Keys.P2_UP, 2, 0x1],
[Keys.P2_DOWN, 2, 0x4],
[Keys.P2_LEFT, 2, 0x8],
[Keys.P2_RIGHT, 2, 0x2],
[Keys.P2_A, 2, 0x40],
[Keys.P2_B, 3, 0x40],
]);
newMachine() { return new ColecoVision(); }
getPresets() { return ColecoVision_PRESETS; }
getDefaultExtension() { return ".c"; };
readAddress(a) { return this.machine.read(a); }
// TODO loadBios(bios) { this.machine.loadBIOS(a); }
class ColecoVisionPlatform extends BasicZ80ScanlinePlatform implements Platform {
cpuFrequency = 3579545; // MHz
canvasWidth = 304;
numTotalScanlines = 262;
numVisibleScanlines = 240;
defaultROMSize = 0x8000;
vdp: TMS9918A;
bios: Uint8Array;
keypadMode: boolean;
audio;
psg;
getPresets() { return ColecoVision_PRESETS; }
getKeyboardMap() { return COLECOVISION_KEYCODE_MAP; }
getVideoOptions() { return { overscan: true }; }
newRAM() {
return new Uint8Array(0x400);
}
newMembus() {
return {
read: newAddressDecoder([
[0x0000, 0x1fff, 0x1fff, (a) => { return this.bios ? this.bios[a] : 0; }],
[0x6000, 0x7fff, 0x3ff, (a) => { return this.ram[a]; }],
[0x8000, 0xffff, 0x7fff, (a) => { return this.rom ? this.rom[a] : 0; }],
]),
write: newAddressDecoder([
[0x6000, 0x7fff, 0x3ff, (a, v) => { this.ram[a] = v; }],
]),
};
}
newIOBus() {
return {
read: (addr:number):number => {
addr &= 0xff;
//console.log('IO read', hex(addr,4));
switch (addr) {
case 0xfc: return this.inputs[this.keypadMode ? 1 : 0] ^ 0xff;
case 0xff: return this.inputs[this.keypadMode ? 3 : 2] ^ 0xff;
}
if (addr >= 0xa0 && addr <= 0xbf) {
if (addr & 1)
return this.vdp.readStatus();
else
return this.vdp.readData();
}
return 0;
},
write: (addr:number, val:number) => {
addr &= 0xff;
val &= 0xff;
//console.log('IO write', hex(addr,4), hex(val,2));
switch (addr >> 4) {
case 0x8: case 0x9: this.keypadMode = true; break;
case 0xc: case 0xd: this.keypadMode = false; break;
case 0xa: case 0xb:
if (addr & 1)
return this.vdp.writeAddress(val);
else
return this.vdp.writeData(val);
case 0xf: this.psg.setData(val); break;
}
}
};
}
start() {
super.start();
this.bios = new lzgmini().decode(stringToByteArray(atob(COLECO_BIOS_LZG)));
this.audio = new MasterAudio();
this.psg = new SN76489_Audio(this.audio);
var cru = {
setVDPInterrupt: (b) => {
if (b) {
this.cpu.nonMaskableInterrupt();
} else {
// TODO: reset interrupt?
}
}
};
this.vdp = this.newVDP(this.video.getFrameData(), cru, true); // true = 4 sprites/line
}
newVDP(frameData, cru, flicker) {
return new TMS9918A(frameData, cru, flicker);
}
startScanline(sl: number) {
}
drawScanline(sl: number) {
this.vdp.drawScanline(sl);
}
loadState(state) {
super.loadState(state);
this.vdp.restoreState(state['vdp']);
this.keypadMode = state['kpm'];
}
saveState() {
var state = super.saveState();
state['vdp'] = this.vdp.getState();
state['kpm'] = this.keypadMode;
return state;
}
reset() {
super.reset();
this.vdp.reset();
this.psg.reset();
this.keypadMode = false;
}
getDebugCategories() {
return super.getDebugCategories().concat(['VDP']);
}
getDebugInfo(category, state) {
switch (category) {
case 'VDP': return this.vdpStateToLongString(state.vdp);
default: return super.getDebugInfo(category, state);
}
}
vdpStateToLongString(ppu) {
return this.vdp.getRegsString();
}
readVRAMAddress(a : number) : number {
return this.vdp.ram[a & 0x3fff];
}
}
var COLECO_BIOS_LZG = `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FBQAOEQwKBhEAwNwAAB4eAMGIAchfBAHAQAHggMEqBh8GAfBABAwfDAH4gAAQEBAfAAAKCh8KCgG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/// MAME support
class ColecoVisionMAMEPlatform extends BaseMAMEPlatform implements Platform {