diff --git a/modules/pdp10/lib/panel.js b/modules/pdp10/lib/panel.js
index 538c70c75..212a20e14 100644
--- a/modules/pdp10/lib/panel.js
+++ b/modules/pdp10/lib/panel.js
@@ -323,19 +323,7 @@ class PanelPDP10 extends Component {
         }
 
         switch (sBinding) {
-        case 'R0':
-        case 'R1':
-        case 'R2':
-        case 'R3':
-        case 'R4':
-        case 'R5':
-        case 'R6':
-        case 'R7':
-        case 'NF':
-        case 'ZF':
-        case 'VF':
-        case 'CF':
-        case 'PS':
+        case 'PC':
             this.bindings[sBinding] = control;
             this.cLiveRegs++;
             return true;
diff --git a/versions/c1pjs/1.34.0/c1p-dbg.js b/versions/c1pjs/1.34.0/c1p-dbg.js
index 0be87e59a..4e5a9992b 100644
--- a/versions/c1pjs/1.34.0/c1p-dbg.js
+++ b/versions/c1pjs/1.34.0/c1p-dbg.js
@@ -19,8 +19,8 @@
  http://pcjs.org/modules/c1pjs/lib/debugger.js (C) Jeff Parsons 2012-2017
  http://pcjs.org/modules/c1pjs/lib/computer.js (C) Jeff Parsons 2012-2017
 */
-var f;function p(a,b){function c(){}c.prototype=b.prototype;a.prototype=new c;a.prototype.constructor=a;for(var d in b)if(Object.defineProperties){var e=Object.getOwnPropertyDescriptor(b,d);e&&Object.defineProperty(a,d,e)}else a[d]=b[d]}function q(a,b,c){var d="";b?8<b&&(b=8):b=a&-65536?8:4;if(null==a||isNaN(a))for(;0<b--;)d="?"+d;else for(;0<b--;){var e=a&15,e=e+(0<=e&&9>=e?48:55),d=String.fromCharCode(e)+d;a>>=4}return(c?"0x":"")+d}function t(a){return q(a,2,!0)}function u(a){return q(a,4,!0)}
-function aa(a){var b=a,c=a.lastIndexOf("/");0<=c&&(b=a.substr(c+1));c=b.indexOf("&");0<c&&(b=b.substr(0,c));return b}function ba(a){var b="",c=a.lastIndexOf(".");0<=c&&(b=a.substr(c+1).toLowerCase());return b}function ca(a){return a.replace(/[&<>"']/g,function(a){return da[a]})}var da={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#039;"},ea=Date.now||function(){return+new Date};
+var f;function p(a,b){function c(){}c.prototype=b.prototype;a.prototype=new c;a.prototype.constructor=a;for(var d in b)if(Object.defineProperties){var e=Object.getOwnPropertyDescriptor(b,d);e&&Object.defineProperty(a,d,e)}else a[d]=b[d]}function q(a,b,c){var d="";b?8<b&&(b=8):b=a&-65536?8:4;if(null==a||isNaN(a))for(;0<b--;)d="?"+d;else for(0>a&&-1<a&&(a=-1);0<b--;){var e=a&15,e=e+(0<=e&&9>=e?48:55),d=String.fromCharCode(e)+d;a>>=4}return(c?"0x":"")+d}function t(a){return q(a,2,!0)}
+function u(a){return q(a,4,!0)}function aa(a){var b=a,c=a.lastIndexOf("/");0<=c&&(b=a.substr(c+1));c=b.indexOf("&");0<c&&(b=b.substr(0,c));return b}function ba(a){var b="",c=a.lastIndexOf(".");0<=c&&(b=a.substr(c+1).toLowerCase());return b}function ca(a){return a.replace(/[&<>"']/g,function(a){return da[a]})}var da={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#039;"},ea=Date.now||function(){return+new Date};
 function v(a,b){var c=!0,c=void 0===c?!1:c,d=0,e=null;if("object"==typeof resources&&(e=resources[a]))b&&b(a,e,d);else if(c&&"function"==typeof resources)resources(a,function(c,d){b&&b(a,c,d)});else{var g=window.XMLHttpRequest?new window.XMLHttpRequest:new window.ActiveXObject("Microsoft.XMLHTTP");c&&(g.onreadystatechange=function(){4===g.readyState&&(e=g.responseText,200==g.status||!g.status&&e.length&&"file:"==(window?window.location.protocol:"file:")||(d=g.status||-1),b&&b(a,e,d))});g.open("GET",
 a,c);g.send();c||(e=g.responseText,200!=g.status&&(d=g.status||-1),b&&b(a,e,d))}}function w(a){if(window){var b=window?window.navigator.userAgent:"";return"iOS"==a&&!!b.match(/(iPod|iPhone|iPad)/)&&!!b.match(/AppleWebKit/)||"MSIE"==a&&!!b.match(/(MSIE|Trident)/)||0<=b.indexOf(a)}return!1}function fa(a,b,c){function d(){--a;0<=a&&(b()||(a=0));0<a?setTimeout(d,0):c()}d()}
 function ga(a,b){function c(){b(100===d)&&(e=setTimeout(c,d),d=100)}var d=0,e=null,g=!1;a.onmousedown=function(){g||e||(d=500,c())};a.ontouchstart=function(){e||(d=500,c())};a.onmouseup=a.onmouseout=function(){e&&(clearTimeout(e),e=null)};a.ontouchend=a.ontouchcancel=function(){e&&(clearTimeout(e),e=null);g=!0}}function ha(a,b){if(window){var c=window[a];window[a]="function"!==typeof c?b:function(){c&&c();b()}}}function x(a){y.init.push(a)}
diff --git a/versions/c1pjs/1.34.0/c1p.js b/versions/c1pjs/1.34.0/c1p.js
index 3641ea1ef..0a7561657 100644
--- a/versions/c1pjs/1.34.0/c1p.js
+++ b/versions/c1pjs/1.34.0/c1p.js
@@ -19,7 +19,7 @@
  http://pcjs.org/modules/c1pjs/lib/debugger.js (C) Jeff Parsons 2012-2017
  http://pcjs.org/modules/c1pjs/lib/computer.js (C) Jeff Parsons 2012-2017
 */
-var e;function q(a,b){function c(){}c.prototype=b.prototype;a.prototype=new c;a.prototype.constructor=a;for(var d in b)if(Object.defineProperties){var f=Object.getOwnPropertyDescriptor(b,d);f&&Object.defineProperty(a,d,f)}else a[d]=b[d]}function r(a,b,c){var d="";b?8<b&&(b=8):b=a&-65536?8:4;if(null==a||isNaN(a))for(;0<b--;)d="?"+d;else for(;0<b--;){var f=a&15,f=f+(0<=f&&9>=f?48:55),d=String.fromCharCode(f)+d;a>>=4}return(c?"0x":"")+d}
+var e;function q(a,b){function c(){}c.prototype=b.prototype;a.prototype=new c;a.prototype.constructor=a;for(var d in b)if(Object.defineProperties){var f=Object.getOwnPropertyDescriptor(b,d);f&&Object.defineProperty(a,d,f)}else a[d]=b[d]}function r(a,b,c){var d="";b?8<b&&(b=8):b=a&-65536?8:4;if(null==a||isNaN(a))for(;0<b--;)d="?"+d;else for(0>a&&-1<a&&(a=-1);0<b--;){var f=a&15,f=f+(0<=f&&9>=f?48:55),d=String.fromCharCode(f)+d;a>>=4}return(c?"0x":"")+d}
 function aa(a){var b=a,c=a.lastIndexOf("/");0<=c&&(b=a.substr(c+1));c=b.indexOf("&");0<c&&(b=b.substr(0,c));return b}function ba(a){var b="",c=a.lastIndexOf(".");0<=c&&(b=a.substr(c+1).toLowerCase());return b}function ca(a){return a.replace(/[&<>"']/g,function(a){return da[a]})}var da={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#039;"},ea=Date.now||function(){return+new Date};
 function t(a,b){var c=!0,c=void 0===c?!1:c,d=0,f=null;if("object"==typeof resources&&(f=resources[a]))b&&b(a,f,d);else if(c&&"function"==typeof resources)resources(a,function(c,d){b&&b(a,c,d)});else{var g=window.XMLHttpRequest?new window.XMLHttpRequest:new window.ActiveXObject("Microsoft.XMLHTTP");c&&(g.onreadystatechange=function(){4===g.readyState&&(f=g.responseText,200==g.status||!g.status&&f.length&&"file:"==(window?window.location.protocol:"file:")||(d=g.status||-1),b&&b(a,f,d))});g.open("GET",
 a,c);g.send();c||(f=g.responseText,200!=g.status&&(d=g.status||-1),b&&b(a,f,d))}}function u(a){if(window){var b=window?window.navigator.userAgent:"";return"iOS"==a&&!!b.match(/(iPod|iPhone|iPad)/)&&!!b.match(/AppleWebKit/)||"MSIE"==a&&!!b.match(/(MSIE|Trident)/)||0<=b.indexOf(a)}return!1}function fa(a,b){if(window){var c=window[a];window[a]="function"!==typeof c?b:function(){c&&c();b()}}}function v(a){w.init.push(a)}
diff --git a/versions/pc8080/1.34.0/pc8080.js b/versions/pc8080/1.34.0/pc8080.js
index 8c42ba54e..d57ffe9fb 100644
--- a/versions/pc8080/1.34.0/pc8080.js
+++ b/versions/pc8080/1.34.0/pc8080.js
@@ -46,8 +46,8 @@ var ca=window?window.PCjs.Machines:{},r=window?window.PCjs.Components:[],ma=wind
 Array.prototype.indexOf||(Array.prototype.indexOf=function(a,b){b=b||0;for(var c=this.length;b<c;b++)if(this[b]===a)return b;return-1});Array.isArray||(Array.isArray=function(a){return"[object Array]"===Object.prototype.toString.call(a)});
 Function.prototype.bind||(Function.prototype.bind=function(a){function b(){return e.apply(this instanceof c&&a?this:a,d.concat(Array.prototype.slice.call(arguments)))}function c(){}if("function"!=typeof this)throw new TypeError("Function.prototype.bind: non-callable object");var d=Array.prototype.slice.call(arguments,1),e=this;c.prototype=this.prototype;b.prototype=new c;return b});
 function sa(a){var b=16,c;if(a){b||(b=10);var d=a.charAt(0),e=0<a.indexOf(",");e&&(a=a.replace(/,/g,""));"#"==d?(b=8,d=null):"$"==d&&(b=16,d=null);null==d?a=a.substr(1):("0"==d&&(d=a.charAt(1),"b"==d&&e&&(b=2,d=null),"o"==d?(b=8,d=null):"x"==d&&(b=16,d=null)),null==d?a=a.substr(2):(d=a.charAt(a.length-1).toLowerCase(),"y"==d?(b=2,d=null):"."==d?(b=10,d=null):"h"==d&&(b=16,d=null),null==d&&(a=a.substr(0,a.length-1))));var f,d=a;((e=b)&&10!=e?16==e?d.match(/^[0-9a-f]+$/i):8==e?d.match(/^[0-7]+$/):2==
-e&&d.match(/^[01]+$/):d.match(/^[0-9]+$/))&&!isNaN(f=parseInt(a,b))&&(c=f|0)}return c}function B(a,b,c){var d="";b?8<b&&(b=8):b=a&-65536?8:4;if(null==a||isNaN(a))for(;0<b--;)d="?"+d;else for(;0<b--;){var e=a&15,e=e+(0<=e&&9>=e?48:55),d=String.fromCharCode(e)+d;a>>=4}return(c?"0x":"")+d}function ta(a){var b=a,c=a.lastIndexOf("/");0<=c&&(b=a.substr(c+1));c=b.indexOf("&");0<c&&(b=b.substr(0,c));return b}function ua(a){var b="",c=a.lastIndexOf(".");0<=c&&(b=a.substr(c+1).toLowerCase());return b}
-function va(){var a=wa();return-1!==a.indexOf("pcjs.org",a.length-8)}function ya(a){return a.replace(/[&<>"']/g,function(a){return za[a]})}function Aa(a){return String.prototype.trim?a.trim():a.replace(/^\s+|\s+$/g,"")}
+e&&d.match(/^[01]+$/):d.match(/^[0-9]+$/))&&!isNaN(f=parseInt(a,b))&&(c=f)}return c}function B(a,b,c){var d="";b?8<b&&(b=8):b=a&-65536?8:4;if(null==a||isNaN(a))for(;0<b--;)d="?"+d;else for(0>a&&-1<a&&(a=-1);0<b--;){var e=a&15,e=e+(0<=e&&9>=e?48:55),d=String.fromCharCode(e)+d;a>>=4}return(c?"0x":"")+d}function ta(a){var b=a,c=a.lastIndexOf("/");0<=c&&(b=a.substr(c+1));c=b.indexOf("&");0<c&&(b=b.substr(0,c));return b}
+function ua(a){var b="",c=a.lastIndexOf(".");0<=c&&(b=a.substr(c+1).toLowerCase());return b}function va(){var a=wa();return-1!==a.indexOf("pcjs.org",a.length-8)}function ya(a){return a.replace(/[&<>"']/g,function(a){return za[a]})}function Aa(a){return String.prototype.trim?a.trim():a.replace(/^\s+|\s+$/g,"")}
 var za={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#039;"},Ba={0:"NUL",1:"SOH",2:"STX",3:"ETX",4:"EOT",5:"ENQ",6:"ACK",7:"BEL",8:"BS",9:"TAB",10:"LF",11:"VT",12:"FF",13:"CR",14:"SO",15:"SI",16:"DLE",17:"XON",18:"DC2",19:"XOFF",20:"DC4",21:"NAK",22:"SYN",23:"ETB",24:"CAN",25:"EM",26:"SUB",27:"ESC",28:"FS",29:"GS",30:"RS",31:"US"};
 function Ca(){function a(a){return(10>a?"0":"")+a}var b=new Date;return b.getFullYear()+"-"+a(b.getMonth()+1)+"-"+a(b.getDate())+" "+a(b.getHours())+":"+a(b.getMinutes())+":"+a(b.getSeconds())}
 function Da(a,b,c,d){c=void 0===c?!1:c;var e=0,f=null,g=null;if("object"==typeof resources&&(f=resources[a]))return d&&d(a,f,e),[f,e];if(c&&"function"==typeof resources)return resources(a,function(b,c){d&&d(a,b,c)}),g;var h=window.XMLHttpRequest?new window.XMLHttpRequest:new window.ActiveXObject("Microsoft.XMLHTTP");c&&(h.onreadystatechange=function(){4===h.readyState&&(f=h.responseText,200==h.status||!h.status&&f.length&&"file:"==(window?window.location.protocol:"file:")||(e=h.status||-1),d&&d(a,
diff --git a/versions/pcx86/1.34.0/pcx86.js b/versions/pcx86/1.34.0/pcx86.js
index e1b3619e0..5abf3c533 100644
--- a/versions/pcx86/1.34.0/pcx86.js
+++ b/versions/pcx86/1.34.0/pcx86.js
@@ -49,7 +49,7 @@ var da={163840:[40,1,8,,254],184320:[40,1,9,,252],327680:[40,2,8,,255],368640:[4
 y:121,z:122,"{":123,"|":124,"}":125,"~":126,po:127},ea={};ea[173]=n["-"];ea[186]=n[";"];ea[187]=n["="];ea[189]=n["-"];ea[188]=n[","];ea[190]=n["."];ea[191]=n["/"];ea[192]=n["`"];ea[219]=n["["];ea[220]=n["\\"];ea[221]=n["]"];ea[222]=n["'"];var p={};p[n["1"]]=n["!"];p[n["2"]]=n["@"];p[n["3"]]=n["#"];p[n["4"]]=n.$;p[n["5"]]=n["%"];p[n["6"]]=n["^"];p[n["7"]]=n["&"];p[n["8"]]=n["*"];p[n["9"]]=n["("];p[n["0"]]=n[")"];p[186]=n[":"];p[187]=n["+"];p[188]=n["<"];p[189]=n._;p[190]=n[">"];p[191]=n["?"];
 p[192]=n["~"];p[219]=n["{"];p[220]=n["|"];p[221]=n["}"];p[222]=n['"'];p[173]=n._;p[61]=n["+"];p[59]=n[":"];
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 function ia(a){var b="",c=a.lastIndexOf(".");0<=c&&(b=a.substr(c+1).toLowerCase());return b}function ja(a,b){return-1!==a.indexOf(b,a.length-b.length)}function ka(a){return a.replace(/[&<>"']/g,function(a){return la[a]})}function ma(a){return String.prototype.trim?a.trim():a.replace(/^\s+|\s+$/g,"")}
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 function oa(){function a(a){return(10>a?"0":"")+a}var b=new Date;return b.getFullYear()+"-"+a(b.getMonth()+1)+"-"+a(b.getDate())+" "+a(b.getHours())+":"+a(b.getMinutes())+":"+a(b.getSeconds())}function pa(a,b){var c=0,d=1,e;for(e in a){if(d>=arguments.length)break;var f=a[e],g=arguments[d++],c=c&~f.qg|g<<f.shift&f.qg}return c}function qa(a,b){return(b&a.qg)>>a.shift}var ra=[31,28,31,30,31,30,31,31,30,31,30,31],sa=Date.now||function(){return+new Date};
diff --git a/versions/pdpjs/1.34.0/pdp10-dbg.js b/versions/pdpjs/1.34.0/pdp10-dbg.js
index 9962c391b..4781865d8 100644
--- a/versions/pdpjs/1.34.0/pdp10-dbg.js
+++ b/versions/pdpjs/1.34.0/pdp10-dbg.js
@@ -64,11 +64,11 @@ function ub(a){if(vb)try{for(var b=0;b<a.length;b++)a[b]()}catch(c){x(""+("An un
 var C="pdp10",Fb="PDPjs",Gb=Math.pow(2,18),Hb=Math.pow(2,36),C="pdp10",Fb="PDPjs",N={cpu:1,trap:2,fault:4,"int":8,bus:16,memory:32,mmu:64,rom:128,device:256,panel:512,keyboard:1024,key:2048,paper:4096,read:16384,write:32768,serial:1048576,timer:2097152,speaker:16777216,computer:33554432,log:268435456,warn:536870912,buffer:1073741824,halt:-2147483648};
 function Ib(a,b){u.call(this,"Panel",a,512);this.I=this.K=0;this.U=b;this.j=this.H=this.u=this.w=0;this.L=this.M=-1;this.N=this.O=this.G=!1;this.P=Jb;this.B={};this.g={START:[1,1,!0,!1,this.Bb],STEP:[1,1,!1,!1,this.Cb],ENABLE:[1,1,!1,!1,this.wb],CONT:[1,1,!0,!1,this.ub],DEP:[0,0,!0,!1,this.vb],EXAM:[1,1,!0,!1,this.xb],LOAD:[1,1,!0,!1,this.zb],TEST:[0,0,!0,!1,this.yb]};for(a=0;22>a;a++)this.g["S"+a]=[0,0,!1,!1,this.Ab,a];this.A=this.b=this.C=this.D=null;this.exports={hold:this.sb,toggle:this.Nb,reset:this.Jb,
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index 0d710999e..b9a998da8 100644
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