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3 lines
6.2 KiB
JavaScript
3 lines
6.2 KiB
JavaScript
import{I as G,m as S,r as k}from"./chunk-AK5O5EFA.js";import{K as P,W as c,X as v,Z as R,aa as C}from"./chunk-TYDI7JZQ.js";import"./chunk-KT7KMEQC.js";var T=R([[c.START,1,-1],[c.RIGHT,1,-4],[c.LEFT,1,-8],[c.A,1,-16],[c.UP,1,-32],[c.DOWN,1,-64],[c.SELECT,1,-128]]);var U={collision_mask:4,collision_invert:4,scrnbase:16384,charbase:18432};var b=class extends k{constructor(){super();this.cpuFrequency=705562;this.sampleRate=894886;this.numVisibleScanlines=256;this.numTotalScanlines=262;this.cpuCyclesPerLine=42;this.canvasWidth=256;this.defaultROMSize=45056;this.cpu=new S;this.ram=new Uint8Array(28672);this.color_latch=[84,238,107];this.palette=[4278190080,4278190335,4294901760,4294902015,4278255360,4278255615,4294967040,4294967295];this.inputs=new Uint8Array(4);this.keyMap=T;this.handler=v(this.inputs,this.keyMap);this.scrnbase=16384;this.charbase=18432;this.collision_mask=0;this.collision_invert=0;this.current_collision=0;this.pia_regs=new Uint8Array(4);this.bus={read:C([[0,1023,0,t=>this.ram[t]],[4096,16383,0,t=>this.rom[t-4096]],[16384,20479,0,t=>this.ram[t]],[20736,20991,3,t=>t==3?this.int_latch():this.inputs[t]],[20992,21007,3,t=>this.readPIA(t)],[24576,28671,0,t=>this.ram[t]],[32768,65535,0,t=>this.rom[t-32768]]]),write:C([[0,1023,0,(t,e)=>{this.ram[t]=e}],[16384,20479,0,(t,e)=>{this.ram[t]=e}],[20480,20737,0,(t,e)=>{this.ram[t]=e}],[20992,21007,3,(t,e)=>{this.writePIA(t,e)}],[21008,21010,3,(t,e)=>{this.setColorLatch(t,e)}],[24576,28671,0,(t,e)=>{this.ram[t]=e}]])};this.connectCPUMemoryBus(this),this.updatePalette(),this.inputs[0]=234,this.inputs[1]=255}configure(t){this.collision_mask=t.collision_mask,this.collision_invert=t.collision_invert,this.scrnbase=t.scrnbase,this.charbase=t.charbase}loadROM(t){if(super.loadROM(t),t.length==11616)this.rom.set(t.slice(10240,12288),32768),this.rom.set(t.slice(9984,10240),32512),this.rom.set(t.slice(0,10240),2048),this.scrnbase=16384,this.charbase=18432;else if(t.length==14336)this.rom.set(t.slice(13312,14336),32768),this.rom.set(t.slice(12032,12288),32512),this.scrnbase=16384,this.charbase=18432;else if(t.length==32768)this.rom.set(t.slice(30720,32768),32768),this.rom.set(t.slice(0,24576),8192),this.scrnbase=16384,this.charbase=24576;else if(t.length==45056)this.configure(U);else if(t.length!=45056)throw new Error("Warning: ROM size not recognized: "+t.length);let e=32768;this.sprite_gfx=this.rom.subarray(e,e+2048)}read(t){return this.bus.read(t)}readConst(t){return t==20739?this.inputs[3]:this.bus.read(t)}write(t,e){this.bus.write(t,e)}readPIA(t){return this.pia_regs[t&3]}writePIA(t,e){this.pia_regs[t&3]=e}int_latch(){let t=this.inputs[3];t|=this.inputs[1]&128?0:64;let e=this.current_collision^this.collision_invert;return e&=this.collision_mask,t|=e,this.inputs[3]=128,t}checkCollisionM1CHAR(){let t=this.ram[20480],e=this.ram[20544],r=236-t-4,i=244-e-4,a=this.ram[20737];if(a&128&&!(a&16)&&this.collision_mask!=0)return!1;let l=a&32?1:0,o=((this.ram[20736]&15)+16*l)*32;for(let s=0;s<16;s++){let x=i+s;if(x<0||x>=256)continue;let d=x>>3,y=x&7,M=this.sprite_gfx[o+s],m=this.sprite_gfx[o+s+16];for(let n=0;n<16;n++){let _=n<8?M:m,p=n<8?128>>n:128>>n-8;if(!(_&p))continue;let h=r+n;if(h<0||h>=256)continue;let u=h>>3,g=this.ram[this.scrnbase+d*32+u];if(this.ram[this.charbase+g*8+y]&128>>(h&7))return!0}}return!1}checkCollisionM1M2(){let t=236-this.ram[20480]-4,e=244-this.ram[20544]-4,r=236-this.ram[20608]-4,i=244-this.ram[20672]-4;if(t+16<=r||r+16<=t||e+16<=i||i+16<=e)return!1;let a=this.ram[20737],l=a&32?1:0,f=((this.ram[20736]&15)+16*l)*32,o=a&64?1:0,s=((this.ram[20736]>>4)+32+16*o)*32,x=Math.max(t,r),d=Math.min(t+16,r+16),y=Math.max(e,i),M=Math.min(e+16,i+16);for(let m=y;m<M;m++){let n=m-e,_=m-i;for(let p=x;p<d;p++){let h=p-t,u=p-r,g=h<8?this.sprite_gfx[f+n]:this.sprite_gfx[f+n+16],E=h<8?128>>h:128>>h-8,I=u<8?this.sprite_gfx[s+_]:this.sprite_gfx[s+_+16],z=u<8?128>>u:128>>u-8;if(g&E&&I&z)return!0}}return!1}updatePalette(){this.set_1_color(0,0),this.set_1_color(1,7),this.set_1_color(2,0),this.set_1_color(3,6),this.set_1_color(4,4),this.set_1_color(5,3),this.set_1_color(6,2),this.set_1_color(7,1)}set_1_color(t,e){let r=this.color_latch[0]&1<<e?1:0,i=this.color_latch[1]&1<<e?2:0,a=this.color_latch[2]&1<<e?4:0;this.palette[t]=F[r|i|a]}setColorLatch(t,e){this.color_latch[t&3]=e,this.updatePalette()}drawSprite(t,e,r,i){var a=236-t-4,l=244-e-4;if(l+=15,l-=this.scanline,l>=0&&l<16){l=15-l;let f=this.scanline*this.canvasWidth,o=this.sprite_gfx[r+l];for(let s=0;s<8;s++)if(o&128>>s){let x=a+s;x>=0&&x<256&&(this.pixels[f+x]=this.palette[i])}o=this.sprite_gfx[r+l+16];for(let s=0;s<8;s++)if(o&128>>s){let x=a+s+8;x>=0&&x<256&&(this.pixels[f+x]=this.palette[i])}}}drawSprite1(){let t=this.ram[20737];if(t&128&&!(t&16)&&this.collision_mask!=0)return;let e=this.ram[20480],r=this.ram[20544],i=t&32?1:0,a=(this.ram[20736]&15)+16*i;this.drawSprite(e,r,a*32,1)}drawSprite2(){let t=this.ram[20737];if(t&64&&this.collision_mask!=0)return;let e=this.ram[20608],r=this.ram[20672],i=t&64?1:0,a=(this.ram[20736]>>4)+0+16*i;this.drawSprite(e,r,a*32,3)}startScanline(){}drawScanline(){let t=this.scanline,e=t>>3,r=t*this.canvasWidth;for(let i=0;i<256;i++){let a=i>>3,l=this.ram[this.scrnbase+e*32+a],f=4+(l>>6&3),s=this.ram[this.charbase+l*8+(t&7)]&128>>(i&7)?f:0;this.pixels[r+i]=this.palette[s]}this.drawSprite2(),this.drawSprite1()}postFrame(){this.current_collision=0,this.collision_mask&4&&this.checkCollisionM1CHAR()&&(this.current_collision|=4),this.collision_mask&16&&this.checkCollisionM1M2()&&(this.current_collision|=16),this.inputs[3]&=127,this.cpu.IRQ()}getVideoParams(){return{width:256,height:256,aspect:6/5}}};var F=[4278190080,4278190335,4278255360,4278255615,4294901760,4294902015,4294967040,4294967295];var L=[{id:"minimal.c",name:"Minimal Example",category:"C"}],w=class extends G{newMachine(){return new b}getPresets(){return L}readAddress(A){return this.machine.readConst(A)}getMemoryMap(){return{main:[{name:"RAM",start:0,size:1024,type:"ram"},{name:"Sprite I/O",start:20480,size:256,type:"io"},{name:"I/O",start:20736,size:3,type:"io"},{name:"PIA 6821",start:20992,size:15,type:"io"},{name:"Color Latches",start:21008,size:3,type:"io"},{name:"Screen RAM",start:16384,size:1024,type:"ram"},{name:"Character RAM",start:18432,size:2048,type:"ram"},{name:"Program ROM",start:32768,size:32768,type:"rom"}]}}};P.exidy=w;
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