diff --git a/modules/pc8080/lib/cpuops.js b/modules/pc8080/lib/cpuops.js
index 15f89928b..0a194ba87 100644
--- a/modules/pc8080/lib/cpuops.js
+++ b/modules/pc8080/lib/cpuops.js
@@ -541,6 +541,164 @@ CPUDef.opCMA = function()
     this.nStepCycles -= 4;
 };
 
+/**
+ * op=0x31 (LXI SP,d16)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opLXISP = function()
+{
+    this.setSP(this.getPCWord());
+    this.nStepCycles -= 10;
+};
+
+/**
+ * op=0x32 (STA a16)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opSTA = function()
+{
+    this.setByte(this.getPCWord(), this.regA);
+    this.nStepCycles -= 13;
+};
+
+/**
+ * op=0x33 (INX SP)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opINXSP = function()
+{
+    this.setSP(this.getSP() + 1);
+    this.nStepCycles -= 5;
+};
+
+/**
+ * op=0x34 (INR M)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opINRM = function()
+{
+    var addr = this.getHL();
+    this.setByte(addr, this.incByte(this.getByte(addr)));
+    this.nStepCycles -= 10;
+};
+
+/**
+ * op=0x35 (DCR M)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opDCRM = function()
+{
+    var addr = this.getHL();
+    this.setByte(addr, this.decByte(this.getByte(addr)));
+    this.nStepCycles -= 10;
+};
+
+/**
+ * op=0x36 (MVI M,d8)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opMVIM = function()
+{
+    this.setByte(this.getHL(), this.getPCByte());
+    this.nStepCycles -= 10;
+};
+
+/**
+ * op=0x37 (STC)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opSTC = function()
+{
+    this.setCF();
+    this.nStepCycles -= 4;
+};
+
+/**
+ * op=0x39 (DAD SP)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opDADSP = function()
+{
+    var w;
+    this.setSP(w = this.getHL() + this.getSP());
+    this.resultZeroCarry = (this.resultZeroCarry & 0xff) | ((w >> 8) & 0x100);
+    this.nStepCycles -= 10;
+};
+
+/**
+ * op=0x3A (LDA a16)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opLDA = function()
+{
+    this.regA = this.getByte(this.getPCWord());
+    this.nStepCycles -= 13;
+};
+
+/**
+ * op=0x3B (DCX SP)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opDCXSP = function()
+{
+    this.setSP(this.getSP() - 1);
+    this.nStepCycles -= 5;
+};
+
+/**
+ * op=0x3C (INR A)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opINRA = function()
+{
+    this.regA = this.incByte(this.regA);
+    this.nStepCycles -= 5;
+};
+
+/**
+ * op=0x3D (DCR A)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opDCRA = function()
+{
+    this.regA = this.decByte(this.regA);
+    this.nStepCycles -= 5;
+};
+
+/**
+ * op=0x3E (MVI A,d8)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opMVIA = function()
+{
+    this.regA = this.getPCByte();
+    this.nStepCycles -= 7;
+};
+
+/**
+ * op=0x3F (CMC)
+ *
+ * @this {CPUSim}
+ */
+CPUDef.opCMC = function()
+{
+    this.updateCF(!this.getCF());
+    this.nStepCycles -= 4;
+};
+
 /**
  * opTBD()
  *
@@ -573,10 +731,10 @@ CPUDef.aOps = [
     /* 0x24-0x27 */ CPUDef.opINRH,  CPUDef.opDCRH,  CPUDef.opMVIH,  CPUDef.opDAA,
     /* 0x28-0x2B */ CPUDef.opNOP,   CPUDef.opDADH,  CPUDef.opLHLD,  CPUDef.opDCXH,
     /* 0x2C-0x2F */ CPUDef.opINRL,  CPUDef.opDCRL,  CPUDef.opMVIL,  CPUDef.opCMA,
-    /* 0x30-0x33 */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
-    /* 0x34-0x37 */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
-    /* 0x38-0x3B */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
-    /* 0x3C-0x3F */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
+    /* 0x30-0x33 */ CPUDef.opNOP,   CPUDef.opLXISP, CPUDef.opSTA,   CPUDef.opINXSP,
+    /* 0x34-0x37 */ CPUDef.opINRM,  CPUDef.opDCRM,  CPUDef.opMVIM,  CPUDef.opSTC,
+    /* 0x38-0x3B */ CPUDef.opNOP,   CPUDef.opDADSP, CPUDef.opLDA,   CPUDef.opDCXSP,
+    /* 0x3C-0x3F */ CPUDef.opINRA,  CPUDef.opDCRA,  CPUDef.opMVIA,  CPUDef.opCMC,
     /* 0x40-0x43 */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
     /* 0x44-0x47 */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
     /* 0x48-0x4B */ CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,   CPUDef.opTBD,
diff --git a/versions/pc8080/1.21.7/pc8080-dbg.js b/versions/pc8080/1.21.7/pc8080-dbg.js
index a2f648ffb..d0be8e4a4 100644
--- a/versions/pc8080/1.21.7/pc8080-dbg.js
+++ b/versions/pc8080/1.21.7/pc8080-dbg.js
@@ -1,171 +1,171 @@
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+k.save=function(){var a=new J(this);M(a,0,Dd(this.O));M(a,1,Dd(this.da));M(a,2,[this.B,this.na,this.Y]);M(a,3,this.I);return a.data()};k.restore=function(a){var b=0;void 0!==a[2]&&(this.O=Ed(a[b++]),this.da=Ed(a[b++]),this.B=a[b][0],"string"==typeof this.B&&(this.B=[this.B]),this.na=a[b][1],this.Y|=a[b][2]);a[3]&&(this.I=a[3]);return!0};k.start=function(a,b){this.T||this.g("running");this.j.X=!0;this.Tb=a;this.Wb=b};
+k.stop=function(a,b){if(this.j.X){this.j.X=!1;this.L=b-this.Wb;if(!this.T){var c="stopped";if(this.L){var d=a-this.Tb,e=0<d?Math.round(1E3*this.L/d):0,c=c+" (";kd(this)&&(c+=this.V+" opcodes, ",this.Ga-=this.V,this.V=0);c+=this.L+" cycles, "+d+" ms, "+e+" hz)"}else gb(this,-2147483648)&&(c+=" (use the 't' command to execute blocked faults)");this.g(c)}this.ma(!0);this.gb();Sd(this,this.b.P)}};function kd(a){return 1<a.w.length||!!a.wa}
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+function Vd(a,b,c,d,e){var f=!1;c=V(c);for(var h=1;h<b.length;h++){var g=b[h];if(c==V(g)&&(!d||g.pa)){f=!0;g.pa||e||Wd(a,b,h,"cleared");b.splice(h,1);b!=a.w&&(d=a.b,hc(d.ea[c>>>d.R],b==a.G));g.pa||vd(a);break}}return f}function Xd(a,b){for(var c=1;c<b.length;c++)Wd(a,b,c);return b.length-1}function Wd(a,b,c,d){c=b[c];a.g(b[0]+" "+n(c.u,4)+(d?" "+d:c.Nb?' "'+c.Nb+'"':""))}
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-function Fd(a,b,c){var d;if(b){b=Ed(a,b);for(var e=0,f=!1,k=b,h=[],l=[],m=b.split(/(\|\||&&|\||^|&|!=|==|>=|>>>|>>|>|<=|<<|<|-|\+|%|\/|\*)/);e<m.length;){var p=m[e++],r=p.length,p=oa(p);if(!p){f=!0;break}p=be(a,p,null,!1===c);if(void 0===p){f=!0;c=!1;break}h.push(p);if(e==m.length)break;var p=m[e++],t=p.length;l.length&&$d[p]<$d[l[l.length-1]]&&ae(h,l,1);l.push(p);b=b.substr(r+t)}ae(h,l)&&1==h.length||(f=!0);f?c&&a.g("error parsing '"+k+"' at character "+(k.length-b.length)):(d=h.pop(),c&&Ce(a,null,
-d))}return d}function Ed(a,b){for(var c;(c=b.match(/\{(.*?)}/))&&!(0<=c[1].indexOf("{"));){var d=Fd(a,c[1]);b=b.replace("{"+c[1]+"}",null!=d?n(d):"undefined")}for(;(c=b.match(/\[(.*?)]/))&&!(0<=c[1].indexOf("["));)d=U(a,c[1]),b=b.replace("["+c[1]+"]",d?n(a.ib(d,0),4):"undefined");for(c=b;d=c.match(/\$([a-z]+)/i);){var e=null;switch(d[1].toLowerCase()){case "ops":e=a.V-a.Ha}if(null==e)break;c=c.replace(d[0],e.toString())}return c}
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-function Ce(a,b,c){var d,e=!1;if(void 0!==c){e=!0;d=c;var f,k="";if(!f||4<f)f=4;for(var h=0;h<f;h++){k&&(k=","+k);var l=d&255,m=8,p="";void 0===m?m=32:32<m&&(m=32);if(null==l||isNaN(l))for(;0<m--;)p="?"+p;else for(;0<m--;)p=(l&1?"1":"0")+p,l>>=1;k=p+"b"+k;d>>=8}d="0x"+n(c)+" "+c+". ("+k+")"}a.g((null!=b?b+": ":"")+d);return e}function De(a,b){if(b)return Ce(a,b,a.ja[b]);var c=0;for(b in a.ja)Ce(a,b,a.ja[b]),c++;return 0<c}sd.prototype.xb=function(a,b){return a[0]>b[0]?1:a[0]<b[0]?-1:0};
-function Ee(a,b,c){var d=[],e=T(b)>>>0;for(b=0;b<a.I.length;b++){var f=a.I[b],k=f.u>>>0,h=f.Yb;if(e>=k&&e<k+h){e=pa(f.yb,[e-k],a.xb);0<=e?Fe(a,b,e,d):c&&(e=~e,Fe(a,b,e-1,d),Fe(a,b,e,d));break}}return d}function Fe(a,b,c,d){var e={},f=a.I[b].yb,k=0,h=null;0<=c&&c<f.length&&(k=f[c][0],h=f[c][1]);h&&(e=a.I[b].qa[h],h="."==h.charAt(0)?null:e.l||h);d.push(h);d.push(k);d.push(e.a);d.push(e.c)}
-function Ge(a,b){if("?"==b)a.g("frequency commands:"),a.g("\tclear\tclear all frequency counts");else{var c,d=0;if(a.J)if("clear"==b){for(c=0;c<a.J.length;c++)a.J[c]=[c,0];a.g("frequency data cleared");d++}else if(void 0!==b)a.g("unknown frequency command: "+b),d++;else{var e=a.J.slice();e.sort(function(a,b){return b[1]-a[1]});for(c=0;c<e.length;c++){var f=e[c][0],k=e[c][1];k&&(a.g((xd[a.jb[f][0]]+"  ").substr(0,5)+" ("+("0x"+n(f,2))+"): "+k+" times"),d++)}}d||a.g("no frequency data available")}}
-function He(a,b){var c=b.match(/^\s*([A-Z_]?[A-Z0-9_]*)\s*(=?)\s*(.*)$/i);if(c){if(!c[1])return De(a)||a.g("no variables"),!0;if(!c[2])return De(a,c[1]);if(!c[3])return delete a.ja[c[1]],!0;var d=Fd(a,c[3]);return void 0!==d?(a.ja[c[1]]=d,!0):!1}a.g("invalid assignment:"+b);return!1}
-function Ie(a,b,c){var d=null;if(b=U(a,b,!0)){var e=Ee(a,b,!0);if(e.length){var f,k;e[0]&&(k="",(f=b.u-e[1])&&(k=" + "+q(f)),f=e[0]+" ("+n(e[1],4)+")"+k,c&&a.g(f),d=f);4<e.length&&e[4]&&(k="",(f=e[5]-b.u)&&(k=" - "+q(f)),f=e[4]+" ("+n(e[5],4)+")"+k,c&&a.g(f),d||(d=f))}else c&&a.g("no symbols")}return d}
-function Pd(a,b){var c;if(b&&"?"==b[1])a.g("register commands:"),a.g("\tr\tdump registers"),a.g("\trx [#]\tset flag or register x to [#]");else{null==c&&(c=!0);if(null!=b&&1<b.length){var d=b[1],e=null,f=d.indexOf("=");if(0<f)e=d.substr(f+1),d=d.substr(0,f);else if(2<b.length)e=b[2];else{a.g("missing value for "+b[1]);return}var f=!1,k=Fd(a,e);if(void 0!==k){var f=!0,h=d.toUpperCase();"E"==h.charAt(0)&&(h=null);switch(h){case "A":a.b.O=k&255;break;case "B":a.b.ba=k&255;break;case "BC":a.b.ba=k<<8&
-255;case "C":a.b.ga=k&255;break;case "D":a.b.ca=k&255;break;case "DE":a.b.ca=k<<8&255;case "E":a.b.ha=k&255;break;case "H":a.b.da=k&255;break;case "HL":a.b.da=k<<8&255;case "L":a.b.ia=k&255;break;case "SP":a.b.Ea=k&65535;break;case "PC":a.b.R=k&65535;a.N=P(a.b.R);break;case "PS":wc(a.b,k);break;case "C":k?(d=a.b,d.G|=256):(d=a.b,d.G&=255);break;case "P":k?(d=a.b,ub[d.L&255]||(d.L^=1)):(d=a.b,ub[d.L&255]&&(d.L^=1));break;case "A":k?(d=a.b,d.B=~d.L&16|d.B&-17):(d=a.b,d.B=d.L&16|d.B&-17);break;case "Z":k?
-(d=a.b,d.G&=-256):(d=a.b,d.G|=255);break;case "S":k?(d=a.b,d.L&128||(d.L^=192)):(d=a.b,d.L&128&&(d.L^=192));break;case "I":k?(d=a.b,d.Da|=512):(d=a.b,d.Da&=-513);break;default:a.g("unknown register: "+d);return}}if(!f){a.g("invalid value: "+e);return}I(a.b);a.g("updated registers:")}a.g(V(a,7)+V(a,8)+V(a,0)+V(a,1)+V(a,2)+V(a,3)+V(a,4)+V(a,5)+V(a,13)+Zd(a,"I")+Zd(a,"S")+Zd(a,"Z")+Zd(a,"A")+Zd(a,"P")+Zd(a,"C"));c&&(a.N=P(a.b.R),Qd(a,n(a.N.u,4)))}}
-function Je(a,b){b=oa(b);var c=b.match(/^(['"])(.*?)\1$/);c?a.g(Md(a,c[2])):Fd(a,b,!0)}function Ke(a,b,c){var d="t"!=b;c=be(a,c,null,!0)||1;var e=1==c?0:1;"tc"==b&&(e=c,c=1);Fa(c,function(){return fb(a,!0)&&a.Ua(e,d,!1)},function(){I(a.b);fb(a,!1)})}
-function Qd(a,b,c,d){if(b=U(a,b,!0)){void 0===d&&(d=1);var e=256;if(void 0!==c){d=U(a,c,!0);if(!d||d.u<b.u)return;e=d.u-b.u;if(256<e){a.g("range too large");return}d=-1}c=0;for(var f;0<e&&d--;){f=gb(a,!1)||a.T?a.K:null;var k=null!=f?"cycles":null,h=Ee(a,b),l=b.u;if(h[0]&&d&&(!c&&d||0>h[0].indexOf("+"))){var m=h[0]+":";h[2]&&(m+=" "+h[2]);a.g(m)}h[3]&&(k=h[3],f=null);f=Yd(a,b,k,f);a.g(f);a.N=b;e-=b.u-l;c++}}}
-function Hd(a,b,c,d){if(c)if(b){0>a.D&&a.B.length&&(a.D=0);if(0>a.D||b!=a.B[a.D])a.B.splice(0,0,b),a.D=0;a.D--}else b=a.B[a.D+1];a=[];if(b){b=b.toLowerCase().replace(/""/g,"'");c=0;var e=null;d=d||";";for(var f=0;f<=b.length;f++){var k=b.charAt(f);if('"'==k||"'"==k)e?k==e&&(e=null):e=k;else if(k==d&&!e||!k)a.push(oa(b.substring(c,f))),c=f+1}}return a}
-function Xd(a,b,c){var d=!0;try{b.length&&"end"!=b?c||a.g(">> "+b):(a.ma&&(a.g("ended assemble at "+n(a.ea.u,4)),a.N=a.ea,a.ma=!1),b="");var e=b.charAt(0);if('"'==e||"'"==e)return!0;a.wa=null;if(rb(a)&&0<b.length){a.ma&&(b="a "+n(a.ea.u,4)+" "+b);var f=b.replace(/ +/g," ").split(" ");if(f&&f.length)for(var k=f[0],h=k.charAt(0),l=1;l<k.length;l++){var m=k.charAt(l);if("?"==h||"r"==h||"a">m||"z"<m){f[0]=k.substr(l);f.unshift(k.substr(0,l));break}}switch(f[0].charAt(0)){case "a":var p=U(a,f[1],!0);if(p)if(a.ea=
-p,void 0===f[2])a.g("begin assemble at "+n(p.u,4)),a.ma=!0,I(a.b);else{var r;a.g("not supported yet");r=[];if(r.length){for(var t=0;t<r.length;t++)a.vb(p,r[t],1);a.g(Yd(a,a.ea))}}break;case "b":a:{var K=f[0],B=f[1],ef=b;if("?"==B)a.g("breakpoint commands:"),a.g("\tbi [p]\ttoggle break on input port [p]"),a.g("\tbo [p]\ttoggle break on output port [p]"),a.g("\tbp [a]\tset exec breakpoint at addr [a]"),a.g("\tbr [a]\tset read breakpoint at addr [a]"),a.g("\tbw [a]\tset write breakpoint at addr [a]"),
-a.g("\tbc [a]\tclear breakpoint at addr [a]"),a.g("\tbl\tlist all breakpoints"),a.g("\tbn [n]\tbreak after [n] instruction(s)");else{var X=K.charAt(1);if("l"==X){var Ha=0,Ha=Ha+Wd(a,a.w),Ha=Ha+Wd(a,a.S);(Ha+=Wd(a,a.F))||a.g("no breakpoints")}else if("n"==X)a.va=be(a,B),a.g("break after "+a.va+" instruction(s)");else if(void 0===B)a.g("missing breakpoint address");else{var A=P();if("*"!=B&&(A=U(a,B,!0),!A))break a;B=q(A.u);"c"==X?null==A.u?(td(a),a.g("all breakpoints cleared")):Ud(a,a.w,A)||Ud(a,a.S,
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