From 35b7c7d2a4f0266abed95b8790fa6a93bf6c1e62 Mon Sep 17 00:00:00 2001
From: Jeff Parsons <jeff@pcjs.org>
Date: Wed, 27 Jul 2016 15:44:47 -0700
Subject: [PATCH] Support for loading the VT100 fontROM (but no actual
 font-building is happening yet)

---
 devices/pc8080/machine/vt100/README.md   |   6 +-
 devices/pc8080/machine/vt100/machine.xml |   3 +-
 modules/pc8080/lib/video.js              | 138 ++++++++-
 versions/pc8080/1.23.3/pc8080-dbg.js     | 347 ++++++++++++-----------
 versions/pc8080/1.23.3/pc8080.js         | 165 +++++------
 5 files changed, 400 insertions(+), 259 deletions(-)

diff --git a/devices/pc8080/machine/vt100/README.md b/devices/pc8080/machine/vt100/README.md
index 1083c0ca7..dafff42f9 100644
--- a/devices/pc8080/machine/vt100/README.md
+++ b/devices/pc8080/machine/vt100/README.md
@@ -11,11 +11,13 @@ machines:
 VT100 Terminal
 --------------
 
-This is where we'll be testing another 8080-based machine: a VT100 Terminal. Unlike other VT100 emulations,
+This is where we'll be testing another 8080-based machine: the VT100 Terminal. Unlike other VT100 emulations,
 this will simulate a VT100 by running the terminal's original firmware inside the [PC8080](/modules/pc8080/) CPU emulator.
 
 As described in the [Technical Manual (July 1982)](http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/terminal/vt100/EK-VT100-TM-003_VT100_Technical_Manual_Jul82.pdf),
-p. 4-15, 8Kb (0x2000) of ROM is located at 0x0000, and 3Kb (0x0C00) of RAM immediately follows it at 0x2000.  
+p. 4-15, 8Kb (0x2000) of ROM is located at 0x0000, and 3Kb (0x0C00) of RAM immediately follows it at 0x2000.  The ROM at
+0x0000 contains all the VT100's 8080 code.  The VT100 also contains a 2Kb character generator ROM, but it is not
+mapped into the 8080's address space.
 
 [vt100romhax](http://vt100romhax.tumblr.com/post/90697428973/the-vt100-memory-map-and-8080-disassembly)
 (aka [phooky](https://github.com/phooky)) further explains VT100 memory usage:
diff --git a/devices/pc8080/machine/vt100/machine.xml b/devices/pc8080/machine/vt100/machine.xml
index 9dc17d3e3..cbbb10173 100644
--- a/devices/pc8080/machine/vt100/machine.xml
+++ b/devices/pc8080/machine/vt100/machine.xml
@@ -6,7 +6,8 @@
 	<cpu id="cpu8080" model="8080" cycles="2000000"/>
 	<rom id="rom" addr="0x0000" size="0x2000" file="/devices/pc8080/rom/vt100/VT100.json"/>
 	<ram id="ram" addr="0x2000" size="0x0C00"/>
-	<video id="video" screenWidth="1600" screenHeight="800" smoothing="false" bufferAddr="0x2000" bufferRAM="true" bufferFormat="vt100" bufferCols="80" bufferRows="24" pos="left" padding="8px">
+	<video id="video" screenWidth="1600" screenHeight="800" smoothing="false" fontROM="/devices/pc8080/rom/vt100/23-018E2.json"
+		   bufferAddr="0x2000" bufferRAM="true" bufferFormat="vt100" bufferCols="80" bufferRows="24" pos="left" padding="8px">
 		<menu>
 			<title>VT100 Screen</title>
 			<control type="container" pos="right">
diff --git a/modules/pc8080/lib/video.js b/modules/pc8080/lib/video.js
index 2a3891b00..8ac0299ff 100644
--- a/modules/pc8080/lib/video.js
+++ b/modules/pc8080/lib/video.js
@@ -176,6 +176,7 @@ function Video(parmsVideo, canvas, context, textarea, container)
         cxBuffer = this.cyBuffer;
         cyBuffer = this.cxBuffer;
     }
+
     this.imageBuffer = this.contextScreen.createImageData(cxBuffer, cyBuffer);
     this.canvasBuffer = document.createElement("canvas");
     this.canvasBuffer.width = cxBuffer;
@@ -215,6 +216,17 @@ function Video(parmsVideo, canvas, context, textarea, container)
         }
     }
 
+    this.sFontROM = parmsVideo['fontROM'];
+    if (this.sFontROM) {
+        var sFileExt = str.getExtension(this.sFontROM);
+        if (sFileExt != "json") {
+            this.sFontROM = web.getHost() + DumpAPI.ENDPOINT + '?' + DumpAPI.QUERY.FILE + '=' + this.sFontROM + '&' + DumpAPI.QUERY.FORMAT + '=' + DumpAPI.FORMAT.BYTES;
+        }
+        web.getResource(this.sFontROM, null, true, function(sURL, sResponse, nErrorCode) {
+            video.doneLoad(sURL, sResponse, nErrorCode);
+        });
+    }
+
     if (DEBUG) this.nCyclesPrev = 0;
 }
 
@@ -256,6 +268,7 @@ Video.prototype.initBus = function(cmp, bus, cpu, dbg)
         this.chipset = cmp.getMachineComponent("ChipSet");
         if (this.chipset && this.chipset.model == ChipSet.SI_1978.MODEL) {
             this.nFormat = Video.FORMAT.SI1978;
+            this.initColors();  // this needs to be called whenever nFormat may changed
         }
     }
 
@@ -285,7 +298,130 @@ Video.prototype.initBus = function(cmp, bus, cpu, dbg)
         this.kbd.setBinding(this.textareaScreen? "textarea" : "canvas", "kbd", this.inputScreen);
     }
 
-    this.setReady();
+    if (!this.sFontROM) this.setReady();
+};
+
+/**
+ * doneLoad(sURL, sFontData, nErrorCode)
+ *
+ * @this {Video}
+ * @param {string} sURL
+ * @param {string} sFontData
+ * @param {number} nErrorCode (response from server if anything other than 200)
+ */
+Video.prototype.doneLoad = function(sURL, sFontData, nErrorCode)
+{
+    if (nErrorCode) {
+        this.notice("Unable to load font ROM (error " + nErrorCode + ": " + sURL + ")");
+        return;
+    }
+
+    Component.addMachineResource(this.idMachine, sURL, sFontData);
+
+    try {
+        /*
+         * The most likely source of any exception will be right here, where we're parsing the JSON-encoded data.
+         */
+        var abFontData = eval("(" + sFontData + ")");
+
+        var ab = abFontData['bytes'] || abFontData;
+
+        if (!ab.length) {
+            Component.error("Empty font ROM: " + sURL);
+            return;
+        }
+        else if (ab.length == 1) {
+            Component.error(ab[0]);
+            return;
+        }
+
+        /*
+         * Translate the character data into separate "fonts", each of which will be a separate canvas object, with all
+         * 256 characters arranged in a 16x16 grid.
+         */
+        if (ab.length == 2048) {
+            /*
+             * The assumption here is that we're dealing with the original (IBM) MDA/CGA font data, which apparently
+             * was identical on both MDA and CGA cards (even though the former had no use for the latter, and vice versa).
+             *
+             * First, let's take a look at the MDA portion of the data.  Here are the first few rows of MDA font data,
+             * at the 0K and 2K boundaries:
+             *
+             *      00000000  00 00 00 00 00 00 00 00  00 00 7e 81 a5 81 81 bd  |..........~.....|
+             *      00000010  00 00 7e ff db ff ff c3  00 00 00 36 7f 7f 7f 7f  |..~........6....|
+             *      ...
+             *      00000800  00 00 00 00 00 00 00 00  99 81 7e 00 00 00 00 00  |..........~.....|
+             *      00000810  e7 ff 7e 00 00 00 00 00  3e 1c 08 00 00 00 00 00  |..~.....>.......|
+             *
+             * 8 bytes of data from a row in each of the 2K chunks are combined to form a 8-bit wide character with
+             * a maximum height of 16 bits.  Assembling the bits for character 0x01 (a happy face), we observe the following:
+             *
+             *      0 0 0 0 0 0 0 0  <== 00 from offset 0x0008
+             *      0 0 0 0 0 0 0 0  <== 00 from offset 0x0009
+             *      0 1 1 1 1 1 1 0  <== 7e from offset 0x000A
+             *      1 0 0 0 0 0 0 1  <== 81 from offset 0x000B
+             *      1 0 1 0 0 1 0 1  <== a5 from offset 0x000C
+             *      1 0 0 0 0 0 0 1  <== 81 from offset 0x000D
+             *      1 0 0 0 0 0 0 1  <== 81 from offset 0x000E
+             *      1 0 1 1 1 1 0 1  <== bd from offset 0x000F
+             *      1 0 0 1 1 0 0 1  <== 99 from offset 0x0808
+             *      1 0 0 0 0 0 0 1  <== 81 from offset 0x0809
+             *      0 1 1 1 1 1 1 0  <== 7e from offset 0x080A
+             *      0 0 0 0 0 0 0 0  <== 00 from offset 0x080B
+             *      0 0 0 0 0 0 0 0  <== 00 from offset 0x080C
+             *      0 0 0 0 0 0 0 0  <== 00 from offset 0x080D
+             *      0 0 0 0 0 0 0 0  <== 00 from offset 0x080E
+             *      0 0 0 0 0 0 0 0  <== 00 from offset 0x080F
+             *
+             * In the second 2K chunk, we observe that the last two bytes of every font cell definition are zero;
+             * this confirms our understanding that MDA font cell size is 8x14.
+             *
+             * Finally, there's the issue of screen cell size, which is actually 9x14 on the MDA.  We compensate for that
+             * by building a 9x14 font, even though there's only 8x14 bits of data. As http://www.seasip.info/VintagePC/mda.html
+             * explains:
+             *
+             *      "For characters C0h-DFh, the ninth pixel column is a duplicate of the eighth; for others, it's blank."
+             *
+             * This last point is confirmed by "The IBM Personal Computer From The Inside Out", p.295:
+             *
+             *      "Another unique feature of the monochrome adapter is a set of line-drawing and area-fill characters
+             *      that give continuous lines and filled areas. This is unusual for a display with a 9x14 character box
+             *      because the character generator provides a row only eight dots wide. On most displays, a blank 9th
+             *      dot is then inserted between characters. On the monochrome display, there is circuitry that duplicates
+             *      the 8th dot into the 9th dot position for characters whose ASCII codes are 0xB0 [sic] through 0xDF."
+             *
+             * However, the above text is mistaken about the start of the range.  While there ARE line-drawing characters
+             * in the range 0xB0-0xBF, none of them extend all the way to the right edge; IBM carefully segregated them.
+             * And in fact, characters 0xB0-0xB2 contain hash patterns that you would NOT want extended into the 9th column.
+             *
+             * The CGA font is part of the same ROM.  In fact, there are TWO CGA fonts in the ROM: a thin 5x7 "single dot"
+             * font located at offset 0x1000, and a thick 7x7 "double dot" font at offset 0x1800.  The latter is the default
+             * font, unless overridden by a jumper setting on the CGA card, so it is our default CGA font as well (although
+             * someday we may provide a virtual jumper setting that allows you to select the thinner font).
+             *
+             * The first offset we must pass to setFontData() is the offset of the CGA font; we choose the thicker "double dot"
+             * CGA font at 0x1800 (which was the PC's default font as well), instead of the thinner "single dot" font at 0x1000.
+             * The second offset is for the MDA font.
+             */
+            // this.setFontData(ab);
+        }
+        else {
+            this.notice("Unrecognized font data length (" + ab.length + ")");
+            return;
+        }
+
+    } catch (e) {
+        this.notice("Font ROM data error: " + e.message);
+        return;
+    }
+    /*
+     * If we're still here, then we're ready!
+     *
+     * UPDATE: Per issue #21, I'm issuing setReady() *only* if a valid contextScreen exists *or* a Debugger is attached.
+     *
+     * TODO: Consider a more general-purpose solution for deciding whether or not the user wants to run in a "headless" mode.
+     */
+    if (this.contextScreen || this.dbg) this.setReady();
 };
 
 /**
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index d47239c2a..68de4e557 100644
--- a/versions/pc8080/1.23.3/pc8080-dbg.js
+++ b/versions/pc8080/1.23.3/pc8080-dbg.js
@@ -2,215 +2,216 @@
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-Cd.prototype.Da=function(){if(this.Ea){if(this.G){var a=this.G,b=this.id,c=this.H,d=this.B,e=this.Ea,f=[],h;for(h in e){var g=e[h];"number"==typeof g&&(e[h]=g={o:g});var k=g.o,l=g.a;if(void 0!==k){var n=f,k=[k>>>0,h],p=ja(n,k,a.hb);0>p&&n.splice(-(p+1),0,k)}l&&(g.a=l.replace(/''/g,'"'))}a.I.push({oc:b,D:c,hc:d,Ea:e,Jb:f})}delete this.Ea}return!0};Cd.prototype.Ca=function(){return!0};
-function Dd(a,b,c,d){if(d)a.oa("Unable to load system ROM (error "+d+": "+b+")");else{Ya(a.Mb,b,c);if("["==c.charAt(0)||"{"==c.charAt(0))try{var e=eval("("+c+")"),f=e.bytes,h=e.data;if(f)a.u=f;else if(h)for(a.u=Array(4*h.length),d=c=0;c<h.length;c++)a.u[d++]=h[c]&255,a.u[d++]=h[c]>>8&255,a.u[d++]=h[c]>>16&255,a.u[d++]=h[c]>>24&255;else a.u=e;a.Ea=e.symbols;if(!a.u.length){t("Empty ROM: "+b);return}if(1==a.u.length){t(a.u[0]);return}}catch(g){a.oa("ROM data error: "+g.message);return}else for(b=c.replace(/\n/gm,
+function Bd(a,b,c){a.B&=~b;c&&(a.B|=b)}m.dc=function(a,b){var c=this.J;bb(this,a,null,b,"STATUS0",c);return c};m.ec=function(a,b){var c=this.B;bb(this,a,null,b,"STATUS1",c);return c};m.fc=function(a,b){var c=this.K;bb(this,a,null,b,"STATUS2",c);return c};m.cc=function(a,b){var c=this.w>>8-this.F&255;bb(this,a,null,b,"SHIFT.RESULT",c);return c};m.jc=function(a,b,c){bb(this,a,b,c,"SHIFT.COUNT",null);this.F=b};m.lc=function(a,b,c){bb(this,a,b,c,"SOUND1",null);this.H=b};
+m.kc=function(a,b,c){bb(this,a,b,c,"SHIFT.DATA",null);this.w=b<<8|this.w>>8};m.mc=function(a,b,c){bb(this,a,b,c,"SOUND2",null);this.I=b};m.nc=function(a,b,c){bb(this,a,b,c,"WATCHDOG",null)};var zd={0:S.prototype.dc,1:S.prototype.ec,2:S.prototype.fc,3:S.prototype.cc},Ad={2:S.prototype.jc,3:S.prototype.lc,4:S.prototype.kc,5:S.prototype.mc,6:S.prototype.nc};Ja(function(){for(var a=z(document,"pc8080","chipset"),b=0;b<a.length;b++){var c=a[b],d=x(c),d=new S(d);ab(d,c)}});
+function Cd(a){v.call(this,"ROM",a,Cd);this.u=null;this.H=a.addr;this.B=a.size;this.I=a.writable;this.w=a.alias;this.F=a.file;this.J=ba(this.F);if(this.F){a=this.F;var b=ca(this.J);"json"!=b&&"hex"!=b&&(a=pa()+"/api/v1/dump?file="+this.F+"&format=bytes&decimal=true");var c=this;oa(a,null,!0,function(a,b,f){Dd(c,a,b,f)})}}Wa(Cd);var Ed=[0,5];Cd.prototype.Ga=function(a,b,c,d){this.C=b;this.b=c;this.G=d;Fd(this)};
+Cd.prototype.Da=function(){if(this.Fa){if(this.G){var a=this.G,b=this.id,c=this.H,d=this.B,e=this.Fa,f=[],h;for(h in e){var g=e[h];"number"==typeof g&&(e[h]=g={o:g});var k=g.o,l=g.a;if(void 0!==k){var n=f,k=[k>>>0,h],p=ja(n,k,a.hb);0>p&&n.splice(-(p+1),0,k)}l&&(g.a=l.replace(/''/g,'"'))}a.I.push({oc:b,D:c,hc:d,Fa:e,Lb:f})}delete this.Fa}return!0};Cd.prototype.Ca=function(){return!0};
+function Dd(a,b,c,d){if(d)a.ga("Unable to load system ROM (error "+d+": "+b+")");else{Ya(a.Ab,b,c);if("["==c.charAt(0)||"{"==c.charAt(0))try{var e=eval("("+c+")"),f=e.bytes,h=e.data;if(f)a.u=f;else if(h)for(a.u=Array(4*h.length),d=c=0;c<h.length;c++)a.u[d++]=h[c]&255,a.u[d++]=h[c]>>8&255,a.u[d++]=h[c]>>16&255,a.u[d++]=h[c]>>24&255;else a.u=e;a.Fa=e.symbols;if(!a.u.length){t("Empty ROM: "+b);return}if(1==a.u.length){t(a.u[0]);return}}catch(g){a.ga("ROM data error: "+g.message);return}else for(b=c.replace(/\n/gm,
 " ").replace(/ +$/,"").split(" "),a.u=Array(b.length),e=0;e<b.length;e++)a.u[e]=aa(b[e],16);Fd(a)}}
 function Fd(a){if(!jb(a))if(!a.F)C(a);else if(a.u&&a.C){a.B||(a.B=a.u.length);if(a.u.length!=a.B)kb(a,"ROM size (0x"+q(a.u.length)+") does not match specified size ("+("0x"+q(a.B))+")");else if(Gd(a,a.H)){var b=[];"number"==typeof a.w?b.push(a.w):null!=a.w&&a.w.length&&(b=a.w);for(var c=0;c<b.length;c++){for(var d=a,e=b[c],f=d.C,h=d.B,g=[],k=d.H>>>f.fa;0<h&&k<f.U.length;)g.push(f.U[k++]),h-=f.wa;f=d.C;d=d.B;h=0;for(e>>>=f.fa;0<d&&e<f.U.length;){k=g[h++];if(!k)break;f.U[e++]=k;d-=f.wa}}delete a.u}C(a)}}
 function Gd(a,b){if(sb(a.C,b,a.B,a.I?1:Rb)){var c;for(c=0;c<a.u.length;c++)xb(a.C,b+c,a.u[c]);if(a.I&&256==b){for(c=0;c<Ed.length;c++)xb(a.C,Ed[c],118);Dc(a.b,function(a){return function(b){if(0<=Ed.indexOf(b)){var c=!1,h=a.b,g=a.G;if(5==b)switch(c=!0,h.O){case 2:Hd(a,String.fromCharCode(h.R));break;case 9:for(var k=Kc(h),l="",n=255;n--;){var p=a.b.W(k++);if(36==p)break;l+=String.fromCharCode(p)}Hd(a,l);break;default:c=!1}c?vd.call(h):g&&(a.g("\nCP/M vector "+r(b)),E(h,b),g.da());b=!0}else b=!1;return b}}(a));
-Fc(a.b,b)}return!0}return!1}function Hd(a,b){b=b.replace(/\r/g,"");a.va&&(a.va.value+=b,a.va.scrollTop=a.va.scrollHeight)}Ja(function(){for(var a=z(document,"pc8080","rom"),b=0;b<a.length;b++){var c=a[b],d=y(c),d=new Cd(d);ab(d,c)}});function Id(a){v.call(this,"RAM",a,Id);this.w=a.addr;this.B=a.size;this.u=!1}Wa(Id);m=Id.prototype;m.Fa=function(a,b,c,d){this.C=b;this.b=c;this.G=d;C(this)};m.Da=function(a,b){b||this.reset();return!0};m.Ca=function(a){return a?this.save():!0};
-m.reset=function(){!this.u&&this.B&&sb(this.C,this.w,this.B,1)&&(this.u=!0);this.u||t("No RAM allocated")};m.save=function(){return null};m.restore=function(){return!0};Ja(function(){for(var a=z(document,"pc8080","ram"),b=0;b<a.length;b++){var c=a[b],d=y(c),d=new Id(d);ab(d,c)}});function Jd(a){v.call(this,"Keyboard",a,Jd,65536);this.reset();C(this)}Wa(Jd);var Kd={"1p":49,"2p":50,coin:51,left:37,right:39,fire:32},Ld={65:37,68:39,76:32};Jd.prototype.reset=function(){this.b={}};
-Jd.prototype.ma=function(a,b,c){var d=this;a=a+"-"+b;if(void 0===this.L[a])switch(b){case "kbd":return c.onkeydown=function(a){return Md(d,a,!0)},c.onkeyup=function(a){return Md(d,a,!1)},!0;default:if(void 0!==Kd[b])return this.L[a]=c,a=function(a,b){return function(){Nd(a,b,!0)}}(this,b),b=function(a,b){return function(){Nd(a,b,!1)}}(this,b),"ontouchstart"in window?(c.ontouchstart=a,c.ontouchend=b):(c.onmousedown=a,c.onmouseup=c.onmouseout=b),!0}return!1};
-Jd.prototype.Fa=function(a,b,c,d){this.G=d;this.B=ob(a,"ChipSet")};function Md(a,b,c){var d=!0,e;a:{e=b.keyCode;e=Ld[e]||e;for(var f in Kd)if(Kd[f]===e){e=f;break a}e=null}e&&(d=Nd(a,e,c));d||b.preventDefault();return d}function Nd(a,b,c){a.b[b]=c;if(a.B)switch(b){case "1p":Bd(a.B,4,c);break;case "2p":Bd(a.B,2,c);break;case "coin":Bd(a.B,1,c);break;case "left":Bd(a.B,32,c);break;case "right":Bd(a.B,64,c);break;case "fire":Bd(a.B,16,c)}return!1}
-Ja(function(){for(var a=z(document,"pc8080","keyboard"),b=0;b<a.length;b++){var c=a[b],d=y(c),d=new Jd(d);ab(d,c)}});
-function Od(a,b,c,d,e){var f=this;this.Ha=wa("Gecko/");var h=["","moz","ms","webkit"];v.call(this,"Video",a,Od,262144);this.ra=a.screenWidth;this.ba=a.screenHeight;this.ya=a.bufferAddr;this.ub=a.bufferRAM;var g=a.bufferFormat;this.ta=g&&Pd[g.toLowerCase()]||Qd;this.K=a.bufferCols;this.Z=a.bufferRows;this.sa=a.bufferBits||1;this.wb=a.bufferLeft||0;if(this.F=a.bufferRotate)this.F=this.F%360,0<this.F&&(this.F-=360),-90!=this.F&&(this.oa("unsupported buffer rotation: "+this.F),this.F=0);this.ac=a.interruptRate;
-this.Ga=a.refreshRate||60;this.I=b;this.J=c;this.ea=(this.Db=d)||b||null;b=a.smoothing;(c=Ra.smoothing)&&(b="true"==c);if(null!=b)for(c=0;c<h.length;c++)if(d=(d=h[c])?d+"ImageSmoothingEnabled":"imageSmoothingEnabled",void 0!==this.J[d]){this.J[d]=b;break}if(this.H=a.screenRotate)this.H=this.H%360,0<this.H&&(this.H-=360),-90!=this.H?(this.oa("unsupported screen rotation: "+this.H),this.H=0):(this.J.translate(0,this.ba),this.J.rotate(this.H*Math.PI/180),this.J.scale(this.ba/this.ra,this.ra/this.ba));
-this.ha=1<<this.sa;this.Y=Array(this.ha+2);this.Y[0]=[0,0,0,255];this.Y[1]=[255,255,255,255];1==this.ta&&(this.Y[this.ha+0]=[255,255,0,255],this.Y[this.ha+1]=[0,255,0,255]);a=this.K;b=this.Z;this.F&&(a=this.Z,b=this.K);this.Qa=this.J.createImageData(a,b);this.T=document.createElement("canvas");this.T.width=a;this.T.height=b;this.sb=this.T.getContext("2d");if(this.w=e)if(this.w.Ra=e.requestFullscreen||e.msRequestFullscreen||e.mozRequestFullScreen||e.webkitRequestFullscreen,this.w.Ra){for(c=0;c<h.length;c++)if(d=
-h[c]+"fullscreenchange","on"+d in document){document.addEventListener(d,function(){Rd(f,document.fullscreenElement||document.msFullscreenElement||document.mozFullScreenElement||document.webkitFullscreenElement?!0:!1)},!1);break}for(c=0;c<h.length;c++)if(d=h[c]+"fullscreenerror","on"+d in document){document.addEventListener(d,function(){Rd(f,null)},!1);break}}}Wa(Od);var Qd=0,Pd={vt100:2};
-Od.prototype.Fa=function(a,b,c,d){this.u=a;this.C=b;this.b=c;this.G=d;this.ta||(this.B=ob(a,"ChipSet"))&&this.B.Ma==yd&&(this.ta=1);!this.ub&&(this.ua=(this.K*this.sa>>3)*this.Z,sb(this.C,this.ya,this.ua,3)&&(this.gb=this.ua>>1,this.hb=16/this.sa|0,this.za=!1,void 0===this.qa||this.qa.length!=this.gb))&&(this.qa=Array(this.gb));(this.ga=ob(a,"Keyboard"))&&this.I&&this.ga.ma(this.Db?"textarea":"canvas","kbd",this.ea);C(this)};
-Od.prototype.ma=function(a,b,c){var d=this;switch(b){case "fullScreen":return this.L[b]=c,this.w&&this.w.Ra?c.onclick=function(){d.Ra()}:c.parentNode.removeChild(c),!0}return!1};
-Od.prototype.Ra=function(){var a=!1;if(this.w){if(this.w.Ra){a="100%";if(screen&&screen.width&&screen.height){var b=screen.width/screen.height,c=this.ra/this.ba;b>c&&(a=Math.round(c/b*100)+"%")}this.Ha?(this.I.style.width=a,this.I.style.width=a,this.I.style.display="block",this.I.style.margin="auto"):(this.w.style.width=a,this.w.style.height="auto");this.w.style.backgroundColor="black";this.w.Ra();a=!0}this.ea&&this.ea.focus()}return a};
-function Rd(a,b){!b&&a.w&&(a.Ha?a.I.style.width=a.I.style.height="":a.w.style.width=a.w.style.height="");db(a,"notifyFullScreen("+b+")",!0)}
-Ja(function(){for(var a=z(document,"pc8080","video"),b=0;b<a.length;b++){var c=a[b],d=y(c),e=document.createElement("canvas");if(void 0===e||!e.getContext){c.innerHTML="<br/>Missing &lt;canvas&gt; support. Please try a newer web browser.";break}e.setAttribute("class","pcjs-canvas");e.setAttribute("width",d.screenWidth);e.setAttribute("height",d.screenHeight);e.style.backgroundColor=d.screenColor;e.style.height="auto";0<=qa().indexOf("MSIE")&&(c.onresize=function(a,b,c,d){return function(){b.style.height=
+Fc(a.b,b)}return!0}return!1}function Hd(a,b){b=b.replace(/\r/g,"");a.va&&(a.va.value+=b,a.va.scrollTop=a.va.scrollHeight)}Ja(function(){for(var a=z(document,"pc8080","rom"),b=0;b<a.length;b++){var c=a[b],d=x(c),d=new Cd(d);ab(d,c)}});function Id(a){v.call(this,"RAM",a,Id);this.w=a.addr;this.B=a.size;this.u=!1}Wa(Id);m=Id.prototype;m.Ga=function(a,b,c,d){this.C=b;this.b=c;this.G=d;C(this)};m.Da=function(a,b){b||this.reset();return!0};m.Ca=function(a){return a?this.save():!0};
+m.reset=function(){!this.u&&this.B&&sb(this.C,this.w,this.B,1)&&(this.u=!0);this.u||t("No RAM allocated")};m.save=function(){return null};m.restore=function(){return!0};Ja(function(){for(var a=z(document,"pc8080","ram"),b=0;b<a.length;b++){var c=a[b],d=x(c),d=new Id(d);ab(d,c)}});function Jd(a){v.call(this,"Keyboard",a,Jd,65536);this.reset();C(this)}Wa(Jd);var Kd={"1p":49,"2p":50,coin:51,left:37,right:39,fire:32},Ld={65:37,68:39,76:32};Jd.prototype.reset=function(){this.b={}};
+Jd.prototype.na=function(a,b,c){var d=this;a=a+"-"+b;if(void 0===this.L[a])switch(b){case "kbd":return c.onkeydown=function(a){return Md(d,a,!0)},c.onkeyup=function(a){return Md(d,a,!1)},!0;default:if(void 0!==Kd[b])return this.L[a]=c,a=function(a,b){return function(){Nd(a,b,!0)}}(this,b),b=function(a,b){return function(){Nd(a,b,!1)}}(this,b),"ontouchstart"in window?(c.ontouchstart=a,c.ontouchend=b):(c.onmousedown=a,c.onmouseup=c.onmouseout=b),!0}return!1};
+Jd.prototype.Ga=function(a,b,c,d){this.G=d;this.B=ob(a,"ChipSet")};function Md(a,b,c){var d=!0,e;a:{e=b.keyCode;e=Ld[e]||e;for(var f in Kd)if(Kd[f]===e){e=f;break a}e=null}e&&(d=Nd(a,e,c));d||b.preventDefault();return d}function Nd(a,b,c){a.b[b]=c;if(a.B)switch(b){case "1p":Bd(a.B,4,c);break;case "2p":Bd(a.B,2,c);break;case "coin":Bd(a.B,1,c);break;case "left":Bd(a.B,32,c);break;case "right":Bd(a.B,64,c);break;case "fire":Bd(a.B,16,c)}return!1}
+Ja(function(){for(var a=z(document,"pc8080","keyboard"),b=0;b<a.length;b++){var c=a[b],d=x(c),d=new Jd(d);ab(d,c)}});
+function Od(a,b,c,d,e){var f=this;this.Qa=wa("Gecko/");var h=["","moz","ms","webkit"];v.call(this,"Video",a,Od,262144);this.sa=a.screenWidth;this.ea=a.screenHeight;this.za=a.bufferAddr;this.wb=a.bufferRAM;var g=a.bufferFormat;this.ua=g&&Pd[g.toLowerCase()]||Qd;this.K=a.bufferCols;this.ba=a.bufferRows;this.ta=a.bufferBits||1;this.Eb=a.bufferLeft||0;if(this.F=a.bufferRotate)this.F=this.F%360,0<this.F&&(this.F-=360),-90!=this.F&&(this.ga("unsupported buffer rotation: "+this.F),this.F=0);this.bc=a.interruptRate;
+this.Ha=a.refreshRate||60;this.J=b;this.I=c;this.ha=(this.Fb=d)||b||null;b=a.smoothing;(c=Ra.smoothing)&&(b="true"==c);if(null!=b)for(c=0;c<h.length;c++)if(d=(d=h[c])?d+"ImageSmoothingEnabled":"imageSmoothingEnabled",void 0!==this.I[d]){this.I[d]=b;break}if(this.H=a.screenRotate)this.H=this.H%360,0<this.H&&(this.H-=360),-90!=this.H?(this.ga("unsupported screen rotation: "+this.H),this.H=0):(this.I.translate(0,this.ea),this.I.rotate(this.H*Math.PI/180),this.I.scale(this.ea/this.sa,this.sa/this.ea));
+Rd(this);b=this.K;c=this.ba;this.F&&(b=this.ba,c=this.K);this.gb=this.I.createImageData(b,c);this.T=document.createElement("canvas");this.T.width=b;this.T.height=c;this.ub=this.T.getContext("2d");if(this.w=e)if(this.w.Ra=e.requestFullscreen||e.msRequestFullscreen||e.mozRequestFullScreen||e.webkitRequestFullscreen,this.w.Ra){for(c=0;c<h.length;c++)if(d=h[c]+"fullscreenchange","on"+d in document){document.addEventListener(d,function(){Sd(f,document.fullscreenElement||document.msFullscreenElement||document.mozFullScreenElement||
+document.webkitFullscreenElement?!0:!1)},!1);break}for(c=0;c<h.length;c++)if(d=h[c]+"fullscreenerror","on"+d in document){document.addEventListener(d,function(){Sd(f,null)},!1);break}}if(this.X=a.fontROM)"json"!=ca(this.X)&&(this.X=pa()+"/api/v1/dump?file="+this.X+"&format=bytes"),oa(this.X,null,!0,function(a,b,c){Td(f,a,b,c)})}Wa(Od);var Qd=0,Pd={vt100:2};
+Od.prototype.Ga=function(a,b,c,d){this.u=a;this.C=b;this.b=c;this.G=d;this.ua||(this.B=ob(a,"ChipSet"))&&this.B.Ma==yd&&(this.ua=1,Rd(this));!this.wb&&(this.ya=(this.K*this.ta>>3)*this.ba,sb(this.C,this.za,this.ya,3)&&(this.hb=this.ya>>1,this.ib=16/this.ta|0,this.Ea=!1,void 0===this.ra||this.ra.length!=this.hb))&&(this.ra=Array(this.hb));(this.ia=ob(a,"Keyboard"))&&this.J&&this.ia.na(this.Fb?"textarea":"canvas","kbd",this.ha);this.X||C(this)};
+function Td(a,b,c,d){if(d)a.ga("Unable to load font ROM (error "+d+": "+b+")");else{Ya(a.Ab,b,c);try{var e=eval("("+c+")"),f=e.bytes||e;if(!f.length){t("Empty font ROM: "+b);return}if(1==f.length){t(f[0]);return}if(2048!=f.length){a.ga("Unrecognized font data length ("+f.length+")");return}}catch(h){a.ga("Font ROM data error: "+h.message);return}(a.I||a.G)&&C(a)}}
+Od.prototype.na=function(a,b,c){var d=this;switch(b){case "fullScreen":return this.L[b]=c,this.w&&this.w.Ra?c.onclick=function(){d.Ra()}:c.parentNode.removeChild(c),!0}return!1};
+Od.prototype.Ra=function(){var a=!1;if(this.w){if(this.w.Ra){a="100%";if(screen&&screen.width&&screen.height){var b=screen.width/screen.height,c=this.sa/this.ea;b>c&&(a=Math.round(c/b*100)+"%")}this.Qa?(this.J.style.width=a,this.J.style.width=a,this.J.style.display="block",this.J.style.margin="auto"):(this.w.style.width=a,this.w.style.height="auto");this.w.style.backgroundColor="black";this.w.Ra();a=!0}this.ha&&this.ha.focus()}return a};
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+Zc=["CALL"]);for(void 0!==Ae&&a.g(Z+" instructions earlier:");0<gb&&U!=a.ra;){var Ee=ya[U++];if(null==Ee.D)break;var Db=T(Ee.D),Jf=Z--,Fe=Xe(a,Db,"history",Jf);(!Zc.length||0<=Fe.indexOf(Zc[0]))&&a.g(Fe);Db.Bb&&(U+=Db.Bb,gb-=Db.Bb,Z-=Db.Bb);U>=ya.length&&(U=0);a.wb=Z;De++;gb--}}De||(a.g("no "+Ce+"history available"),a.wb=void 0)}else{var fc=W(a,A);if(fc){var gc=0;Y&&("l"==Y.charAt(0)&&(Y=Y.substr(1)||If),gc=cf(a,Y)>>>0,65536<gc&&(gc=65536));for(var Na="",hc="dd"==Q?4:"dw"==Q?2:1,ic=hc*gc||128,Kf=
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+m.ob=function(a){void 0===a&&(a=this.u||(this.X?1:xf));if(!this.w){this.w++;var b=!1,c=!1;this.ha=!1;var d=this.Z||new Hc(this,"1.23.3");if(-1==a)b=!0;else if(a>xf){if(tf(d,this.X)){this.H=new Hc(this,"1.23.3","failsafe");tf(this.H)&&(Cf(this,d),a=2,qf(this.H));F(this.H,"timestamp",la());rf(this.H);var e=this.u&&!this.J;if(1==a||ra("Click OK to restore the previous PC8080 machine state, or CANCEL to reset the machine.")){if(c=sf(d)){var f=uf(d,"code"),h=uf(d,"data");f&&("ok"==f?tf(d,h):("error"==
+f&&"no machine state"!=h?(this.ga("Error: "+h),"unable to verify user"==h&&(va("user",""),this.B=null)):this.g(f+": "+h),qf(d),tf(d)?(c=sf(d),e=!0):c=!1))}e&&Bf(this,c?d:null)}else 2==a&&d.clear()}else Bf(this);delete this.X;delete this.Z}e=Za(this.id);for(f=0;f<e.length;f++)h=e[f],h!==this&&h!=this.b&&(c=Df(this,h,d,b,c));b=[d,a,c];-1!=a?Af(this,this.Nb,b):this.Nb(b)}};
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+function Cf(a,b){if(ra("There may be a problem with your PC8080 machine.\n\nTo help us diagnose it, click OK to send this PC8080 machine state to http://www.pcjs.org.")){var c=a.B||"",d=b.toString(),e={app:"PC8080",ver:"1.23.3"};e.url=a.ra;e.user=c;e.type="bug";e.data=d;oa("http://www.pcjs.org/api/v1/report",e,!0)}}
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-break}this.L[b]=c;c.onclick=function(){var a=wf(d,!0);if(a){var b=!!(d.u&&!d.T||d.ea),c=mf(d,b);b?Cf(d,a,c):d.oa("Resume disabled, machine state not saved")}};return!0}return!1};
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+function bc(a){if(!Na(a))if(!a.g)B(a);else if(a.b&&a.o){a.c||(a.c=a.b.length);if(a.b.length!=a.c){var b="ROM size (0x"+n(a.b.length)+") does not match specified size ("+("0x"+n(a.c))+")";a.h.ea=!0;a.I(b)}else if(cc(a,a.j)){b=[];"number"==typeof a.f?b.push(a.f):null!=a.f&&a.f.length&&(b=a.f);for(var c=0;c<b.length;c++){for(var d=a,e=b[c],f=d.o,h=d.c,g=[],l=d.j>>>f.c;0<h&&l<f.b.length;)g.push(f.b[l++]),h-=f.f;f=d.o;d=d.c;h=0;for(e>>>=f.c;0<d&&e<f.b.length;){l=g[h++];if(!l)break;f.b[e++]=l;d-=f.f}}delete a.b}B(a)}}
+function cc(a,b){if(Va(a.o,b,a.c,a.l?1:gb)){var c;for(c=0;c<a.b.length;c++)Za(a.o,b+c,a.b[c]);if(a.l&&256==b){for(c=0;c<ac.length;c++)Za(a.o,ac[c],118);Gb(a.a,function(a){return function(b){if(0<=ac.indexOf(b)){var c=!1,h=a.a,g=a.J;if(5==b)switch(c=!0,h.v){case 2:dc(a,String.fromCharCode(h.w));break;case 9:for(var l=G(h),k="",u=255;u--;){var q=a.a.F(l++);if(36==q)break;k+=String.fromCharCode(q)}dc(a,k);break;default:c=!1}c?Sb.call(h):g&&(a.R("\nCP/M vector 0x"+n(b,4)),D(h,b),wb(g));b=!0}else b=!1;
+return b}}(a));Ib(a.a,b)}return!0}return!1}function dc(a,b){b=b.replace(/\r/g,"");a.ba&&(a.ba.value+=b,a.ba.scrollTop=a.ba.scrollHeight)}wa(function(){for(var a=z(document,"pc8080","rom"),b=0;b<a.length;b++){var c=a[b],d=y(c),d=new Zb(d);Ja(d,c)}});function ec(a){t.call(this,"RAM",a,ec);this.f=a.addr;this.c=a.size;this.b=!1}w(ec);m=ec.prototype;m.ca=function(a,b,c,d){this.o=b;this.a=c;this.J=d;B(this)};m.Y=function(a,b){b||this.reset();return!0};m.X=function(a){return a?this.save():!0};
+m.reset=function(){!this.b&&this.c&&Va(this.o,this.f,this.c,1)&&(this.b=!0);this.b||r("No RAM allocated")};m.save=function(){return null};m.restore=function(){return!0};wa(function(){for(var a=z(document,"pc8080","ram"),b=0;b<a.length;b++){var c=a[b],d=y(c),d=new ec(d);Ja(d,c)}});function fc(a){t.call(this,"Keyboard",a,fc);this.reset();B(this)}w(fc);var gc={"1p":49,"2p":50,coin:51,left:37,right:39,fire:32},hc={65:37,68:39,76:32};fc.prototype.reset=function(){this.a={}};
 fc.prototype.O=function(a,b,c){var d=this;a=a+"-"+b;if(void 0===this.B[a])switch(b){case "kbd":return c.onkeydown=function(a){return jc(d,a,!0)},c.onkeyup=function(a){return jc(d,a,!1)},!0;default:if(void 0!==gc[b])return this.B[a]=c,a=function(a,b){return function(){kc(a,b,!0)}}(this,b),b=function(a,b){return function(){kc(a,b,!1)}}(this,b),"ontouchstart"in window?(c.ontouchstart=a,c.ontouchend=b):(c.onmousedown=a,c.onmouseup=c.onmouseout=b),!0}return!1};
-fc.prototype.ca=function(a,b,c,d){this.I=d;this.G=Ra(a,"ChipSet")};function jc(a,b,c){var d=!0,e;a:{e=b.keyCode;e=ic[e]||e;for(var f in gc)if(gc[f]===e){e=f;break a}e=null}e&&(d=kc(a,e,c));d||b.preventDefault();return d}function kc(a,b,c){a.a[b]=c;if(a.G)switch(b){case "1p":Yb(a.G,4,c);break;case "2p":Yb(a.G,2,c);break;case "coin":Yb(a.G,1,c);break;case "left":Yb(a.G,32,c);break;case "right":Yb(a.G,64,c);break;case "fire":Yb(a.G,16,c)}return!1}
+fc.prototype.ca=function(a,b,c,d){this.J=d;this.G=Ra(a,"ChipSet")};function jc(a,b,c){var d=!0,e;a:{e=b.keyCode;e=hc[e]||e;for(var f in gc)if(gc[f]===e){e=f;break a}e=null}e&&(d=kc(a,e,c));d||b.preventDefault();return d}function kc(a,b,c){a.a[b]=c;if(a.G)switch(b){case "1p":Yb(a.G,4,c);break;case "2p":Yb(a.G,2,c);break;case "coin":Yb(a.G,1,c);break;case "left":Yb(a.G,32,c);break;case "right":Yb(a.G,64,c);break;case "fire":Yb(a.G,16,c)}return!1}
 wa(function(){for(var a=z(document,"pc8080","keyboard"),b=0;b<a.length;b++){var c=a[b],d=y(c),d=new fc(d);Ja(d,c)}});
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-a.refreshRate||60;this.g=b;this.i=c;this.C=(this.hb=d)||b||null;b=a.smoothing;(c=Ba.smoothing)&&(b="true"==c);if(null!=b)for(c=0;c<h.length;c++)if(d=(d=h[c])?d+"ImageSmoothingEnabled":"imageSmoothingEnabled",void 0!==this.i[d]){this.i[d]=b;break}if(this.f=a.screenRotate)this.f=this.f%360,0<this.f&&(this.f-=360),-90!=this.f?(this.J("unsupported screen rotation: "+this.f),this.f=0):(this.i.translate(0,this.A),this.i.rotate(this.f*Math.PI/180),this.i.scale(this.A/this.L,this.L/this.A));this.H=1<<this.M;
-this.m=Array(this.H+2);this.m[0]=[0,0,0,255];this.m[1]=[255,255,255,255];1==this.S&&(this.m[this.H+0]=[255,255,0,255],this.m[this.H+1]=[0,255,0,255]);a=this.j;b=this.s;this.c&&(a=this.s,b=this.j);this.Ra=this.i.createImageData(a,b);this.l=document.createElement("canvas");this.l.width=a;this.l.height=b;this.ib=this.l.getContext("2d");if(this.b=e)if(this.b.ia=e.requestFullscreen||e.msRequestFullscreen||e.mozRequestFullScreen||e.webkitRequestFullscreen,this.b.ia){for(c=0;c<h.length;c++)if(d=h[c]+"fullscreenchange",
-"on"+d in document){document.addEventListener(d,function(){oc(f,document.fullscreenElement||document.msFullscreenElement||document.mozFullScreenElement||document.webkitFullscreenElement?!0:!1)},!1);break}for(c=0;c<h.length;c++)if(d=h[c]+"fullscreenerror","on"+d in document){document.addEventListener(d,function(){oc(f,null)},!1);break}}}w(lc);var nc=0,mc={vt100:2};
-lc.prototype.ca=function(a,b,c,d){this.u=a;this.o=b;this.a=c;this.I=d;this.S||(this.G=Ra(a,"ChipSet"))&&this.G.Y==Vb&&(this.S=1);!this.jb&&(this.V=(this.j*this.M>>3)*this.s,Va(this.o,this.$,this.V,3)&&(this.Sa=this.V>>1,this.Ta=16/this.M|0,this.aa=!1,void 0===this.K||this.K.length!=this.Sa))&&(this.K=Array(this.Sa));(this.D=Ra(a,"Keyboard"))&&this.g&&this.D.O(this.hb?"textarea":"canvas","kbd",this.C);B(this)};
+function lc(a,b,c,d,e){var f=this;this.Qa=ra("Gecko/");var h=["","moz","ms","webkit"];t.call(this,"Video",a,lc);this.M=a.screenWidth;this.C=a.screenHeight;this.aa=a.bufferAddr;this.kb=a.bufferRAM;var g=a.bufferFormat;this.V=g&&mc[g.toLowerCase()]||nc;this.j=a.bufferCols;this.A=a.bufferRows;this.S=a.bufferBits||1;this.lb=a.bufferLeft||0;if(this.c=a.bufferRotate)this.c=this.c%360,0<this.c&&(this.c-=360),-90!=this.c&&(this.I("unsupported buffer rotation: "+this.c),this.c=0);this.ib=a.interruptRate;this.$=
+a.refreshRate||60;this.i=b;this.g=c;this.D=(this.mb=d)||b||null;b=a.smoothing;(c=Ba.smoothing)&&(b="true"==c);if(null!=b)for(c=0;c<h.length;c++)if(d=(d=h[c])?d+"ImageSmoothingEnabled":"imageSmoothingEnabled",void 0!==this.g[d]){this.g[d]=b;break}if(this.f=a.screenRotate)this.f=this.f%360,0<this.f&&(this.f-=360),-90!=this.f?(this.I("unsupported screen rotation: "+this.f),this.f=0):(this.g.translate(0,this.C),this.g.rotate(this.f*Math.PI/180),this.g.scale(this.C/this.M,this.M/this.C));oc(this);b=this.j;
+c=this.A;this.c&&(b=this.A,c=this.j);this.Sa=this.g.createImageData(b,c);this.l=document.createElement("canvas");this.l.width=b;this.l.height=c;this.jb=this.l.getContext("2d");if(this.b=e)if(this.b.ia=e.requestFullscreen||e.msRequestFullscreen||e.mozRequestFullScreen||e.webkitRequestFullscreen,this.b.ia){for(c=0;c<h.length;c++)if(d=h[c]+"fullscreenchange","on"+d in document){document.addEventListener(d,function(){pc(f,document.fullscreenElement||document.msFullscreenElement||document.mozFullScreenElement||
+document.webkitFullscreenElement?!0:!1)},!1);break}for(c=0;c<h.length;c++)if(d=h[c]+"fullscreenerror","on"+d in document){document.addEventListener(d,function(){pc(f,null)},!1);break}}if(this.m=a.fontROM)"json"!=ea(this.m)&&(this.m=la()+"/api/v1/dump?file="+this.m+"&format=bytes"),p(this.m,null,!0,function(a,b,c){qc(f,a,b,c)})}w(lc);var nc=0,mc={vt100:2};
+lc.prototype.ca=function(a,b,c,d){this.u=a;this.o=b;this.a=c;this.J=d;this.V||(this.G=Ra(a,"ChipSet"))&&this.G.Z==Vb&&(this.V=1,oc(this));!this.kb&&(this.W=(this.j*this.S>>3)*this.A,Va(this.o,this.aa,this.W,3)&&(this.Ta=this.W>>1,this.Ua=16/this.S|0,this.da=!1,void 0===this.L||this.L.length!=this.Ta))&&(this.L=Array(this.Ta));(this.H=Ra(a,"Keyboard"))&&this.i&&this.H.O(this.mb?"textarea":"canvas","kbd",this.D);this.m||B(this)};
+function qc(a,b,c,d){if(d)a.I("Unable to load font ROM (error "+d+": "+b+")");else{Ha(a.pa,b,c);try{var e=eval("("+c+")"),f=e.bytes||e;if(!f.length){r("Empty font ROM: "+b);return}if(1==f.length){r(f[0]);return}if(2048!=f.length){a.I("Unrecognized font data length ("+f.length+")");return}}catch(h){a.I("Font ROM data error: "+h.message);return}(a.g||a.J)&&B(a)}}
 lc.prototype.O=function(a,b,c){var d=this;switch(b){case "fullScreen":return this.B[b]=c,this.b&&this.b.ia?c.onclick=function(){d.ia()}:c.parentNode.removeChild(c),!0}return!1};
-lc.prototype.ia=function(){var a=!1;if(this.b){if(this.b.ia){a="100%";if(screen&&screen.width&&screen.height){var b=screen.width/screen.height,c=this.L/this.A;b>c&&(a=Math.round(c/b*100)+"%")}this.ha?(this.g.style.width=a,this.g.style.width=a,this.g.style.display="block",this.g.style.margin="auto"):(this.b.style.width=a,this.b.style.height="auto");this.b.style.backgroundColor="black";this.b.ia();a=!0}this.C&&this.C.focus()}return a};
-function oc(a,b){!b&&a.b&&(a.ha?a.g.style.width=a.g.style.height="":a.b.style.width=a.b.style.height="")}
+lc.prototype.ia=function(){var a=!1;if(this.b){if(this.b.ia){a="100%";if(screen&&screen.width&&screen.height){var b=screen.width/screen.height,c=this.M/this.C;b>c&&(a=Math.round(c/b*100)+"%")}this.Qa?(this.i.style.width=a,this.i.style.width=a,this.i.style.display="block",this.i.style.margin="auto"):(this.b.style.width=a,this.b.style.height="auto");this.b.style.backgroundColor="black";this.b.ia();a=!0}this.D&&this.D.focus()}return a};
+function pc(a,b){!b&&a.b&&(a.Qa?a.i.style.width=a.i.style.height="":a.b.style.width=a.b.style.height="")}function oc(a){a.K=1<<a.S;a.s=Array(a.K+2);a.s[0]=[0,0,0,255];a.s[1]=[255,255,255,255];1==a.V&&(a.s[a.K+0]=[255,255,0,255],a.s[a.K+1]=[0,255,0,255])}
 wa(function(){for(var a=z(document,"pc8080","video"),b=0;b<a.length;b++){var c=a[b],d=y(c),e=document.createElement("canvas");if(void 0===e||!e.getContext){c.innerHTML="<br/>Missing &lt;canvas&gt; support. Please try a newer web browser.";break}e.setAttribute("class","pcjs-canvas");e.setAttribute("width",d.screenWidth);e.setAttribute("height",d.screenHeight);e.style.backgroundColor=d.screenColor;e.style.height="auto";0<=(window?window.navigator.userAgent:"").indexOf("MSIE")&&(c.onresize=function(a,
 b,c,d){return function(){b.style.height=(a.clientWidth*d/c|0)+"px"}}(c,e,d.screenWidth,d.screenHeight),c.onresize());var f=+(d.aspect||Ba.aspect);f&&.3<=f&&3.33>=f&&(va("onresize",function(a,b,c){return function(){b.style.height=(a.clientWidth/c|0)+"px"}}(c,e,f)),window.onresize());c.appendChild(e);f=document.createElement("textarea");ra("iOS")&&(f.setAttribute("autocapitalize","off"),f.setAttribute("autocorrect","off"));c.appendChild(f);var h=e.getContext("2d"),d=new lc(d,e,h,f,c);Ja(d,c)}});
-function E(a,b,c){this.id=a.id;this.key=pc(a,b,c);this.I=a.I;qc(this,a.cb)}function pc(a,b,c){a=a.id;if(b){var d=b.indexOf(".");0<d&&(a+=".v"+b.substr(0,d))}c&&(a+="."+c);return a}
-E.prototype={constructor:E,value:function(){return this[this.id]},data:function(){return this[this.id]},toString:function(){var a=this[this.id];return"string"==typeof a?a:JSON.stringify(a)},clear:function(a){qc(this);var b=[];try{for(var c=0,d=window.localStorage.length;c<d;c++)b.push(window.localStorage.key(c))}catch(e){}for(c=0;c<b.length;c++)if((d=b[c])&&(a||d.substr(0,this.key.length)==this.key)){try{window.localStorage.removeItem(d)}catch(e){}b.splice(c,1);c=0}}};
-function qc(a,b){a[a.id]={};b&&F(a,"parms",b);a.a=!1}function rc(a){var b=!0;if(oa()){var c=JSON.stringify(a[a.id]);qa(a.key,c)||(r("Unable to store "+c.length+" bytes in browser local storage"),b=!1)}return b}function sc(a){var b=!0;try{a[a.id]=JSON.parse(a[a.id])}catch(c){r(c.message||c),b=!1}return b}function tc(a,b){return b?(a[a.id]=b,a.a=!0):a.a?!0:oa()&&(b=pa(a.key))?(a[a.id]=b,a.a=!0):!1}function uc(a,b){return a[a.id][b]||null}function F(a,b,c){try{a[a.id][b]=c}catch(d){}}
-function vc(a,b,c){u.call(this,"Computer",a,vc);this.h.N=!1;wc(this,b);this.G=rb(this,"autoPower",a);this.f=0;this.K=a.busWidth||a.buswidth;this.b=xc;this.s=null;this.l=this.H=!1;this.L=rb(this,"url")||"";(Math.random()+.1).toString(36);this.c=yc(this);if(this.a=Ia("CPU",this.id)){this.I=Ia("Debugger",this.id);this.j=[];for(b=null;b=Ra(this,"Video",b);)this.j.push(b);this.o=new Ta({id:this.Qa+".bus",busWidth:this.K},this.a,this.I);var d,e=x(this.id);if((this.g=Ia("Panel",this.id))&&this.g.ba)for(b=
-0;b<e.length;b++)d=e[b],d.J=this.g.J,d.R=this.g.R,d.ba=this.g.ba;this.R("PC8080 v1.23.3\nCopyright \u00a9 2012-2016 Jeff Parsons <Jeff@pcjs.org>\nLicense: GPL version 3 or later <http://gnu.org/licenses/gpl.html>");for(b=0;b<e.length;b++)d=e[b],d.ca&&d.ca(this,this.o,this.a,this.I);b=null;d=a.resume;void 0!==d&&(1<d.length?b=this.u=d:this.b=parseInt(d,10));var f;if(a=rb(this,"state")||(f=!0,a.state))b=this.C=a,f||(this.l=!0,this.b=xc),this.b&&(this.A=new E(this,"1.23.3"),tc(this.A)?b=null:delete this.A);
-!b&&this.b&&(b=zc(this))&&(this.l=!0);if(b){var h=this;p(b,null,!0,function(a,b,c){c?(h.u=null,h.l=!1,h.J("Unable to load machine state from server (error "+c+(b?": "+(String.prototype.trim?b.trim():b.replace(/^\s+|\s+$/g,"")):"")+")")):(h.s=b,h.H=!0);B(h)})}else B(this);this.B.power||(this.G=!0);!c&&this.G&&Ac(this,this.xa)}else r("Unable to find CPU component")}w(vc);var xc=0;
-function wc(a,b){if(!b){var c;if("object"==typeof resources&&(c=resources.parms))try{b=eval("("+c+")")}catch(d){r(d.message+" ("+c+")")}}a.m=b}function rb(a,b,c){var d=b.toLowerCase(),d=Ba[b]||Ba[d];void 0===d&&a.m&&(d=a.m[b]);void 0===d&&c&&(d=c[b]);void 0===d&&"object"==typeof resources&&resources[b]&&(d=b);return d}function Ac(a,b,c){for(var d=x(a.id),e=0;e<=d.length;e++){var f=e<d.length?d[e]:a;if(!Na(f)){Na(f,function(){Ac(a,b,c)});return}}b.call(a,c)}
-function Bc(a,b){var c=new E(a,"1.23.3","validate");if(tc(c)&&sc(c)){var d=uc(c,"timestamp"),e=b?uc(b,"timestamp"):"unknown";d!=e&&(a.J("Machine state may be out-of-date\n("+d+" vs. "+e+")\nCheck your browser's local storage limits"),b||c.clear())}}m=vc.prototype;
-m.xa=function(a){void 0===a&&(a=this.b||(this.s?1:xc));if(!this.f){this.f++;var b=!1,c=!1;this.D=!1;var d=this.A||new E(this,"1.23.3");if(-1==a)b=!0;else if(a>xc){if(tc(d,this.s)){this.i=new E(this,"1.23.3","failsafe");tc(this.i)&&(Cc(this,d),a=2,qc(this.i));F(this.i,"timestamp",ka());rc(this.i);var e=this.b&&!this.l;if(1==a||ma("Click OK to restore the previous PC8080 machine state, or CANCEL to reset the machine.")){if(c=sc(d)){var f=uc(d,"code"),h=uc(d,"data");f&&("ok"==f?tc(d,h):("error"==f&&
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