diff --git a/js/Byte.js b/js/Byte.js
index b6ad4ab..cecb09d 100644
--- a/js/Byte.js
+++ b/js/Byte.js
@@ -80,6 +80,20 @@ var Word = (function () {
         this.value = typeof high == "number" ? [new Byte((high & ~0xFF) >> 8), new Byte(high & 0xFF)] : [high, low];
     };
     Word.prototype.SetHigh = function (value) {
+        this.value[0] = typeof value == "number" ? new Byte(value) : value;
+    };
+    Word.prototype.SetLow = function (value) {
+        this.value[1] = typeof value == "number" ? new Byte(value) : value;
+    };
+    Word.prototype.Add = function (value) {
+        value = typeof value == "number" ? new Word(value) : value;
+        var overflow = [this.value[0].Add(value.High()), this.value[1].Add(value.Low())];
+    };
+    Word.prototype.AddByte = function (value) {
+        value = typeof value == "number" ? new Byte(value) : value;
+        var over = this.value[1].Add(value);
+        over = this.value[0].Add(over);
+        return new Word(over.Get());
     };
     return Word;
 })();
diff --git a/js/Byte.js.map b/js/Byte.js.map
index 3ddf005..c57cbb3 100644
--- a/js/Byte.js.map
+++ b/js/Byte.js.map
@@ -1 +1 @@
-{"version":3,"file":"Byte.js","sourceRoot":"","sources":["Byte.ts"],"names":["Byte","Byte.constructor","Byte.Add","Byte.Sub","Byte.Get","Byte.Set","Byte.Neg","Byte.And","Byte.Or","Byte.Xor","Byte.Not","Byte.Bit","Byte.Test","Byte.ShiftLeft","Byte.ShiftRight","Word","Word.constructor","Word.High","Word.Low","Word.Set","Word.SetHigh"],"mappings":"AAAA,IAAM,IAAI;IAGNA,SAHEA,IAAIA,CAGaA,IAAgBA;QAAhBC,oBAAgBA,GAAhBA,QAAgBA;QAC/BA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,GAAGA,IAAIA,GAAGA,CAACA,IAAIA,GAAGA,CAACA,GAAGA,IAAIA,GAAGA,CAACA,CAACA,CAACA;IACrDA,CAACA;IAIMD,kBAAGA,GAAVA,UAAWA,GAAQA;QACfE,GAAGA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA;QACnDA,IAAIA,IAAIA,GAAGA,IAAIA,CAACA,KAAKA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;QAClCA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,GAAGA,IAAIA,CAACA;QACzBA,MAAMA,CAACA,IAAIA,IAAIA,CAACA,IAAIA,GAAGA,GAAGA,GAAGA,IAAIA,GAAGA,GAAGA,GAAGA,CAACA,CAACA,CAACA;IACjDA,CAACA;IAIMF,kBAAGA,GAAVA,UAAWA,GAAQA;QACfG,GAAGA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA;QACnDA,MAAMA,CAACA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,CAACA,GAAGA,EAAEA,CAACA,CAACA;IAC/BA,CAACA;IAEMH,kBAAGA,GAAVA;QACII,MAAMA,CAACA,IAAIA,CAACA,KAAKA,CAACA;IACtBA,CAACA;IAIMJ,kBAAGA,GAAVA,UAAWA,GAAQA;QACfK,IAAIA,CAACA,KAAKA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,GAAGA,GAAGA,IAAIA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;IACjEA,CAACA;IAEML,kBAAGA,GAAVA,UAAWA,IAAqBA;QAArBM,oBAAqBA,GAArBA,YAAqBA;QAC5BA,IAAIA,GAAGA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,CAACA,CAACA,CAACA;QACpCA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,GAAGA,IAAIA,CAACA,KAAKA,CAACA;QAC3CA,MAAMA,CAACA,GAAGA,CAACA;IACfA,CAACA;IAIMN,kBAAGA,GAAVA,UAAWA,GAAQA;QACfO,GAAGA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA;QACnDA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,KAAKA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;IACxCA,CAACA;IAIMP,iBAAEA,GAATA,UAAUA,GAAQA;QACdQ,GAAGA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA;QACnDA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,KAAKA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;IACxCA,CAACA;IAIMR,kBAAGA,GAAVA,UAAWA,GAAQA;QACfS,GAAGA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA;QACnDA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,KAAKA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;IACxCA,CAACA;IAEMT,kBAAGA,GAAVA;QACIU,IAAIA,CAACA,KAAKA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,CAACA;IAC7BA,CAACA;IAEMV,kBAAGA,GAAVA,UAAWA,GAAWA,EAAEA,GAAYA;QAChCW,GAAGA,GAAGA,GAAGA,GAAGA,CAACA,CAACA;QACdA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,GAAGA,CAACA,CAACA,EAAEA,GAAGA,CAACA,CAACA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,CAACA,IAAIA,CAACA,GAAGA,CAACA,CAACA,EAAEA,GAAGA,CAACA,CAACA,CAACA,CAACA;IACvFA,CAACA;IAEMX,mBAAIA,GAAXA,UAAYA,GAAWA;QACnBY,GAAGA,GAAGA,GAAGA,GAAGA,CAACA,CAACA;QACdA,MAAMA,CAACA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,GAAGA,CAACA,CAACA,EAAEA,GAAGA,CAACA,CAACA,IAAIA,CAACA,CAACA;IAChDA,CAACA;IAEMZ,wBAASA,GAAhBA,UAAiBA,KAAsBA,EAAEA,KAAsBA;QAA9Ca,qBAAsBA,GAAtBA,aAAsBA;QAAEA,qBAAsBA,GAAtBA,aAAsBA;QAC3DA,IAAIA,GAAGA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,IAAIA,CAACA,CAACA;QACnCA,IAAIA,CAACA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,IAAIA,CAACA,CAACA,CAACA;QAC1BA,IAAIA,CAACA,GAAGA,CAACA,CAACA,EAAEA,KAAKA,GAAGA,GAAGA,GAAGA,KAAKA,CAACA,CAACA;QACjCA,MAAMA,CAACA,GAAGA,CAACA;IACfA,CAACA;IAEMb,yBAAUA,GAAjBA,UAAkBA,KAAsBA,EAAEA,KAAsBA;QAA9Cc,qBAAsBA,GAAtBA,aAAsBA;QAAEA,qBAAsBA,GAAtBA,aAAsBA;QAC5DA,IAAIA,GAAGA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,IAAIA,CAACA,CAACA;QACnCA,IAAIA,CAACA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,KAAKA,CAACA,CAACA,CAACA;QAC3BA,IAAIA,CAACA,GAAGA,CAACA,CAACA,EAAEA,KAAKA,GAAGA,GAAGA,GAAGA,KAAKA,CAACA,CAACA;QACjCA,MAAMA,CAACA,GAAGA,CAACA;IACfA,CAACA;IACLd,WAACA;AAADA,CAACA,AAvFD,IAuFC;AAED,IAAM,IAAI;IAKNe,SALEA,IAAIA,CAKaA,IAASA,EAAEA,GAAUA;QACpCC,IAAIA,CAACA,GAAGA,CAACA,IAAIA,EAAEA,GAAGA,CAACA,CAACA;IACxBA,CAACA;IAEMD,mBAAIA,GAAXA;QACIE,MAAMA,CAACA,IAAIA,CAACA,KAAKA,CAACA,CAACA,CAACA,CAACA;IACzBA,CAACA;IAEMF,kBAAGA,GAAVA;QACIG,MAAMA,CAACA,IAAIA,CAACA,KAAKA,CAACA,CAACA,CAACA,CAACA;IACzBA,CAACA;IAIMH,kBAAGA,GAAVA,UAAWA,IAASA,EAAEA,GAAUA;QAC5BI,IAAIA,CAACA,KAAKA,GAAGA,OAAOA,IAAIA,IAAIA,QAAQA,GAAGA,CAACA,IAAIA,IAAIA,CAACA,CAACA,IAAIA,GAAGA,CAACA,IAAIA,CAACA,IAAIA,CAACA,CAACA,EAAEA,IAAIA,IAAIA,CAACA,IAAIA,GAAGA,IAAIA,CAACA,CAACA,GAAGA,CAACA,IAAIA,EAAEA,GAAGA,CAACA,CAACA;IAChHA,CAACA;IAEMJ,sBAAOA,GAAdA,UAAeA,KAAWA;IAE1BK,CAACA;IACLL,WAACA;AAADA,CAACA,AA1BD,IA0BC"}
\ No newline at end of file
+{"version":3,"file":"Byte.js","sourceRoot":"","sources":["Byte.ts"],"names":["Byte","Byte.constructor","Byte.Add","Byte.Sub","Byte.Get","Byte.Set","Byte.Neg","Byte.And","Byte.Or","Byte.Xor","Byte.Not","Byte.Bit","Byte.Test","Byte.ShiftLeft","Byte.ShiftRight","Word","Word.constructor","Word.High","Word.Low","Word.Set","Word.SetHigh","Word.SetLow","Word.Add","Word.AddByte"],"mappings":"AAAA,IAAM,IAAI;IAGNA,SAHEA,IAAIA,CAGaA,IAAgBA;QAAhBC,oBAAgBA,GAAhBA,QAAgBA;QAC/BA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,GAAGA,IAAIA,GAAGA,CAACA,IAAIA,GAAGA,CAACA,GAAGA,IAAIA,GAAGA,CAACA,CAACA,CAACA;IACrDA,CAACA;IAIMD,kBAAGA,GAAVA,UAAWA,GAAQA;QACfE,GAAGA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA;QACnDA,IAAIA,IAAIA,GAAGA,IAAIA,CAACA,KAAKA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;QAClCA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,GAAGA,IAAIA,CAACA;QACzBA,MAAMA,CAACA,IAAIA,IAAIA,CAACA,IAAIA,GAAGA,GAAGA,GAAGA,IAAIA,GAAGA,GAAGA,GAAGA,CAACA,CAACA,CAACA;IACjDA,CAACA;IAIMF,kBAAGA,GAAVA,UAAWA,GAAQA;QACfG,GAAGA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA;QACnDA,MAAMA,CAACA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,CAACA,GAAGA,EAAEA,CAACA,CAACA;IAC/BA,CAACA;IAEMH,kBAAGA,GAAVA;QACII,MAAMA,CAACA,IAAIA,CAACA,KAAKA,CAACA;IACtBA,CAACA;IAIMJ,kBAAGA,GAAVA,UAAWA,GAAQA;QACfK,IAAIA,CAACA,KAAKA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,GAAGA,GAAGA,IAAIA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;IACjEA,CAACA;IAEML,kBAAGA,GAAVA,UAAWA,IAAqBA;QAArBM,oBAAqBA,GAArBA,YAAqBA;QAC5BA,IAAIA,GAAGA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,CAACA,CAACA,CAACA;QACpCA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,GAAGA,IAAIA,CAACA,KAAKA,CAACA;QAC3CA,MAAMA,CAACA,GAAGA,CAACA;IACfA,CAACA;IAIMN,kBAAGA,GAAVA,UAAWA,GAAQA;QACfO,GAAGA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA;QACnDA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,KAAKA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;IACxCA,CAACA;IAIMP,iBAAEA,GAATA,UAAUA,GAAQA;QACdQ,GAAGA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA;QACnDA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,KAAKA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;IACxCA,CAACA;IAIMR,kBAAGA,GAAVA,UAAWA,GAAQA;QACfS,GAAGA,GAAGA,OAAOA,GAAGA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA;QACnDA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,KAAKA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;IACxCA,CAACA;IAEMT,kBAAGA,GAAVA;QACIU,IAAIA,CAACA,KAAKA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,CAACA;IAC7BA,CAACA;IAEMV,kBAAGA,GAAVA,UAAWA,GAAWA,EAAEA,GAAYA;QAChCW,GAAGA,GAAGA,GAAGA,GAAGA,CAACA,CAACA;QACdA,IAAIA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,GAAGA,CAACA,CAACA,EAAEA,GAAGA,CAACA,CAACA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,CAACA,IAAIA,CAACA,GAAGA,CAACA,CAACA,EAAEA,GAAGA,CAACA,CAACA,CAACA,CAACA;IACvFA,CAACA;IAEMX,mBAAIA,GAAXA,UAAYA,GAAWA;QACnBY,GAAGA,GAAGA,GAAGA,GAAGA,CAACA,CAACA;QACdA,MAAMA,CAACA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,GAAGA,CAACA,CAACA,EAAEA,GAAGA,CAACA,CAACA,IAAIA,CAACA,CAACA;IAChDA,CAACA;IAEMZ,wBAASA,GAAhBA,UAAiBA,KAAsBA,EAAEA,KAAsBA;QAA9Ca,qBAAsBA,GAAtBA,aAAsBA;QAAEA,qBAAsBA,GAAtBA,aAAsBA;QAC3DA,IAAIA,GAAGA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,IAAIA,CAACA,CAACA;QACnCA,IAAIA,CAACA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,IAAIA,CAACA,CAACA,CAACA;QAC1BA,IAAIA,CAACA,GAAGA,CAACA,CAACA,EAAEA,KAAKA,GAAGA,GAAGA,GAAGA,KAAKA,CAACA,CAACA;QACjCA,MAAMA,CAACA,GAAGA,CAACA;IACfA,CAACA;IAEMb,yBAAUA,GAAjBA,UAAkBA,KAAsBA,EAAEA,KAAsBA;QAA9Cc,qBAAsBA,GAAtBA,aAAsBA;QAAEA,qBAAsBA,GAAtBA,aAAsBA;QAC5DA,IAAIA,GAAGA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,GAAGA,IAAIA,CAACA,IAAIA,CAACA,CAACA;QACnCA,IAAIA,CAACA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,KAAKA,CAACA,CAACA,CAACA;QAC3BA,IAAIA,CAACA,GAAGA,CAACA,CAACA,EAAEA,KAAKA,GAAGA,GAAGA,GAAGA,KAAKA,CAACA,CAACA;QACjCA,MAAMA,CAACA,GAAGA,CAACA;IACfA,CAACA;IACLd,WAACA;AAADA,CAACA,AAvFD,IAuFC;AAED,IAAM,IAAI;IAKNe,SALEA,IAAIA,CAKaA,IAASA,EAAEA,GAAUA;QACpCC,IAAIA,CAACA,GAAGA,CAACA,IAAIA,EAAEA,GAAGA,CAACA,CAACA;IACxBA,CAACA;IAEMD,mBAAIA,GAAXA;QACIE,MAAMA,CAACA,IAAIA,CAACA,KAAKA,CAACA,CAACA,CAACA,CAACA;IACzBA,CAACA;IAEMF,kBAAGA,GAAVA;QACIG,MAAMA,CAACA,IAAIA,CAACA,KAAKA,CAACA,CAACA,CAACA,CAACA;IACzBA,CAACA;IAIMH,kBAAGA,GAAVA,UAAWA,IAASA,EAAEA,GAAUA;QAC5BI,IAAIA,CAACA,KAAKA,GAAGA,OAAOA,IAAIA,IAAIA,QAAQA,GAAGA,CAACA,IAAIA,IAAIA,CAACA,CAACA,IAAIA,GAAGA,CAACA,IAAIA,CAACA,IAAIA,CAACA,CAACA,EAAEA,IAAIA,IAAIA,CAACA,IAAIA,GAAGA,IAAIA,CAACA,CAACA,GAAGA,CAACA,IAAIA,EAAEA,GAAGA,CAACA,CAACA;IAChHA,CAACA;IAIMJ,sBAAOA,GAAdA,UAAeA,KAAUA;QACrBK,IAAIA,CAACA,KAAKA,CAACA,CAACA,CAACA,GAAGA,OAAOA,KAAKA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,KAAKA,CAACA,GAAGA,KAAKA,CAACA;IACvEA,CAACA;IAIML,qBAAMA,GAAbA,UAAcA,KAAUA;QACpBM,IAAIA,CAACA,KAAKA,CAACA,CAACA,CAACA,GAAGA,OAAOA,KAAKA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,KAAKA,CAACA,GAAGA,KAAKA,CAACA;IACvEA,CAACA;IAIMN,kBAAGA,GAAVA,UAAWA,KAAUA;QACjBO,KAAKA,GAAGA,OAAOA,KAAKA,IAAIA,QAAQA,GAAGA,IAAIA,IAAIA,CAACA,KAAKA,CAACA,GAAGA,KAAKA,CAACA;QAC3DA,IAAIA,QAAQA,GAAGA,CAACA,IAAIA,CAACA,KAAKA,CAACA,CAACA,CAACA,CAACA,GAAGA,CAACA,KAAKA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\ No newline at end of file
diff --git a/js/Byte.ts b/js/Byte.ts
index 66d9ab9..b508f3c 100644
--- a/js/Byte.ts
+++ b/js/Byte.ts
@@ -110,7 +110,32 @@ class Word {
         this.value = typeof high == "number" ? [new Byte((high & ~0xFF) >> 8), new Byte(high & 0xFF)] : [high, low];
     }
 
-    public SetHigh(value: Byte) {
+    public SetHigh(value: number);
+    public SetHigh(value: Byte);
+    public SetHigh(value: any) {
+        this.value[0] = typeof value == "number" ? new Byte(value) : value;
+    }
+
+    public SetLow(value: number);
+    public SetLow(value: Byte);
+    public SetLow(value: any) {
+        this.value[1] = typeof value == "number" ? new Byte(value) : value;
+    }
+
+    public Add(value: number): Word;
+    public Add(value: Word): Word;
+    public Add(value: any): Word {
+        value = typeof value == "number" ? new Word(value) : value;
+        var overflow = [this.value[0].Add(value.High()), this.value[1].Add(value.Low())];
         
     }
+
+    public AddByte(value: number): Word;
+    public AddByte(value: Byte): Word;
+    public AddByte(value: any): Word {
+        value = typeof value == "number" ? new Byte(value) : value;
+        var over = this.value[1].Add(value);
+        over = this.value[0].Add(over);
+        return new Word(over.Get());
+    }
 }
\ No newline at end of file
diff --git a/js/Registers.js b/js/Registers.js
index a84c003..dcb2c4d 100644
--- a/js/Registers.js
+++ b/js/Registers.js
@@ -21,6 +21,10 @@ var Registers = (function () {
         var tmp = "ABCDEFHLIR";
         for (var i; i < tmp.length; i++)
             Registers.byteRegisters[tmp[i]] = new Byte(0);
+        Registers.shadowRegisters["AF"] = new Word(0);
+        Registers.shadowRegisters["BC"] = new Word(0);
+        Registers.shadowRegisters["DE"] = new Word(0);
+        Registers.shadowRegisters["HL"] = new Word(0);
     };
     Registers.GenerateWord = function (high, low) {
         return new Word(Registers.byteRegisters[high], Registers.byteRegisters[low]);
@@ -32,7 +36,22 @@ var Registers = (function () {
     Registers.GetFlag = function (flag) {
         return Registers.byteRegisters["F"].Test(flag);
     };
-    Registers.ExchangeAccumlatorFlags = function () {
+    Registers.ExchangeAFShadow = function () {
+        var tmp = Registers.shadowRegisters["AF"];
+        Registers.shadowRegisters["AF"].Set(Registers.byteRegisters["A"], Registers.byteRegisters["F"]);
+        Registers.byteRegisters["A"] = tmp.High();
+        Registers.byteRegisters["F"] = tmp.Low();
+    };
+    Registers.ExchangeShadow = function () {
+        var regs = ["BC", "DE", "HL"];
+        for (var reg in regs) {
+            var tmp = Registers.shadowRegisters[regs[reg]];
+            Registers.shadowRegisters[regs[reg]].Set(Registers.byteRegisters[regs[reg][0]], Registers.byteRegisters[regs[reg][1]]);
+            Registers.byteRegisters[regs[reg][0]] = tmp.High();
+            Registers.byteRegisters[regs[reg][1]] = tmp.Low();
+        }
+    };
+    Registers.Exchange = function (a, b) {
     };
     Registers.byteRegisters = [];
     Registers.shadowRegisters = [];
diff --git a/js/Registers.js.map b/js/Registers.js.map
index f31a9f4..0202d2d 100644
--- a/js/Registers.js.map
+++ b/js/Registers.js.map
@@ -1 +1 @@
-{"version":3,"file":"Registers.js","sourceRoot":"","sources":["Registers.ts"],"names":["Flags","Registers","Registers.constructor","Registers.Init","Registers.GenerateWord","Registers.SetFlag","Registers.GetFlag","Registers.ExchangeAccumlatorFlags"],"mappings":"AAAA,gCAAgC;AAEhC,IAAK,KAAmE;AAAxE,WAAK,KAAK;IAAGA,mCAAKA;IAAEA,qCAAMA;IAAEA,qCAAMA;IAAEA,uCAAOA;IAAEA,iCAAIA;IAAEA,uCAAOA;IAAEA,iCAAIA;IAAEA,iCAAIA;AAACA,CAACA,EAAnE,KAAK,KAAL,KAAK,QAA8D;AAExE,IAAM,SAAS;IAAfC,SAAMA,SAASA;IAmCfC,CAACA;IA7BiBD,cAAIA,GAAlBA;QACIE,SAASA,CAACA,aAAaA,CAACA,KAAKA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAC7CA,SAASA,CAACA,aAAaA,CAACA,KAAKA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAC7CA,SAASA,CAACA,aAAaA,CAACA,KAAKA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAC7CA,SAASA,CAACA,aAAaA,CAACA,KAAKA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAE7CA,IAAIA,GAAGA,GAAGA,YAAYA,CAACA;QACvBA,GAAGA,CAAAA,CAACA,GAAGA,CAACA,CAACA,EAAEA,CAACA,GAAGA,GAAGA,CAACA,MAAMA,EAAEA,CAACA,EAAEA;YAC1BA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,CAACA,CAACA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;IAGtDA,CAACA;IAEaF,sBAAYA,GAA1BA,UAA2BA,IAAYA,EAAEA,GAAWA;QAChDG,MAAMA,CAACA,IAAIA,IAAIA,CAACA,SAASA,CAACA,aAAaA,CAACA,IAAIA,CAACA,EAAEA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,CAACA,CAACA;IACjFA,CAACA;IAEaH,iBAAOA,GAArBA,UAAsBA,IAAWA,EAAEA,KAAcA;QAC7CI,EAAEA,CAAAA,CAACA,IAAIA,IAAIA,eAAaA,IAAIA,IAAIA,IAAIA,eAAaA,CAACA;YAC9CA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,CAACA,GAAGA,CAACA,IAAIA,EAAEA,KAAKA,CAACA,CAACA;IACtDA,CAACA;IAEaJ,iBAAOA,GAArBA,UAAsBA,IAAWA;QAC7BK,MAAMA,CAACA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,CAACA,IAAIA,CAACA,IAAIA,CAACA,CAACA;IACnDA,CAACA;IAEaL,iCAAuBA,GAArCA;IAEAM,CAACA;IAjCaN,uBAAaA,GAAWA,EAAEA,CAACA;IAC3BA,yBAAeA,GAAWA,EAAEA,CAACA;IAC7BA,wBAAcA,GAASA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;IACnCA,sBAAYA,GAASA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;IA+BnDA,gBAACA;AAADA,CAACA,AAnCD,IAmCC"}
\ No newline at end of file
+{"version":3,"file":"Registers.js","sourceRoot":"","sources":["Registers.ts"],"names":["Flags","Registers","Registers.constructor","Registers.Init","Registers.GenerateWord","Registers.SetFlag","Registers.GetFlag","Registers.ExchangeAFShadow","Registers.ExchangeShadow","Registers.Exchange"],"mappings":"AAAA,gCAAgC;AAEhC,IAAK,KAAmE;AAAxE,WAAK,KAAK;IAAGA,mCAAKA;IAAEA,qCAAMA;IAAEA,qCAAMA;IAAEA,uCAAOA;IAAEA,iCAAIA;IAAEA,uCAAOA;IAAEA,iCAAIA;IAAEA,iCAAIA;AAACA,CAACA,EAAnE,KAAK,KAAL,KAAK,QAA8D;AAExE,IAAM,SAAS;IAAfC,SAAMA,SAASA;IAuDfC,CAACA;IAjDiBD,cAAIA,GAAlBA;QACIE,SAASA,CAACA,aAAaA,CAACA,KAAKA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAC7CA,SAASA,CAACA,aAAaA,CAACA,KAAKA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAC7CA,SAASA,CAACA,aAAaA,CAACA,KAAKA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAC7CA,SAASA,CAACA,aAAaA,CAACA,KAAKA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAE7CA,IAAIA,GAAGA,GAAGA,YAAYA,CAACA;QACvBA,GAAGA,CAAAA,CAACA,GAAGA,CAACA,CAACA,EAAEA,CAACA,GAAGA,GAAGA,CAACA,MAAMA,EAAEA,CAACA,EAAEA;YAC1BA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,CAACA,CAACA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAElDA,SAASA,CAACA,eAAeA,CAACA,IAAIA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAC9CA,SAASA,CAACA,eAAeA,CAACA,IAAIA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAC9CA,SAASA,CAACA,eAAeA,CAACA,IAAIA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;QAC9CA,SAASA,CAACA,eAAeA,CAACA,IAAIA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;IAClDA,CAACA;IAEaF,sBAAYA,GAA1BA,UAA2BA,IAAYA,EAAEA,GAAWA;QAChDG,MAAMA,CAACA,IAAIA,IAAIA,CAACA,SAASA,CAACA,aAAaA,CAACA,IAAIA,CAACA,EAAEA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,CAACA,CAACA;IACjFA,CAACA;IAEaH,iBAAOA,GAArBA,UAAsBA,IAAWA,EAAEA,KAAcA;QAC7CI,EAAEA,CAAAA,CAACA,IAAIA,IAAIA,eAAaA,IAAIA,IAAIA,IAAIA,eAAaA,CAACA;YAC9CA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,CAACA,GAAGA,CAACA,IAAIA,EAAEA,KAAKA,CAACA,CAACA;IACtDA,CAACA;IAEaJ,iBAAOA,GAArBA,UAAsBA,IAAWA;QAC7BK,MAAMA,CAACA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,CAACA,IAAIA,CAACA,IAAIA,CAACA,CAACA;IACnDA,CAACA;IAEaL,0BAAgBA,GAA9BA;QACIM,IAAIA,GAAGA,GAAGA,SAASA,CAACA,eAAeA,CAACA,IAAIA,CAACA,CAACA;QAC1CA,SAASA,CAACA,eAAeA,CAACA,IAAIA,CAACA,CAACA,GAAGA,CAACA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,EAAEA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,CAACA,CAACA;QAChGA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA,IAAIA,EAAEA,CAACA;QAC1CA,SAASA,CAACA,aAAaA,CAACA,GAAGA,CAACA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;IAC7CA,CAACA;IAEaN,wBAAcA,GAA5BA;QACIO,IAAIA,IAAIA,GAAGA,CAACA,IAAIA,EAAEA,IAAIA,EAAEA,IAAIA,CAACA,CAACA;QAC9BA,GAAGA,CAAAA,CAACA,GAAGA,CAACA,GAAGA,IAAIA,IAAIA,CAACA,CAACA,CAACA;YAClBA,IAAIA,GAAGA,GAAGA,SAASA,CAACA,eAAeA,CAACA,IAAIA,CAACA,GAAGA,CAACA,CAACA,CAACA;YAC/CA,SAASA,CAACA,eAAeA,CAACA,IAAIA,CAACA,GAAGA,CAACA,CAACA,CAACA,GAAGA,CAACA,SAASA,CAACA,aAAaA,CAACA,IAAIA,CAACA,GAAGA,CAACA,CAACA,CAACA,CAACA,CAACA,EAAEA,SAASA,CAACA,aAAaA,CAACA,IAAIA,CAACA,GAAGA,CAACA,CAACA,CAACA,CAACA,CAACA,CAACA,CAACA;YACvHA,SAASA,CAACA,aAAaA,CAACA,IAAIA,CAACA,GAAGA,CAACA,CAACA,CAACA,CAACA,CAACA,GAAGA,GAAGA,CAACA,IAAIA,EAAEA,CAACA;YACnDA,SAASA,CAACA,aAAaA,CAACA,IAAIA,CAACA,GAAGA,CAACA,CAACA,CAACA,CAACA,CAACA,GAAGA,GAAGA,CAACA,GAAGA,EAAEA,CAACA;QACtDA,CAACA;IACLA,CAACA;IAEaP,kBAAQA,GAAtBA,UAAuBA,CAASA,EAAEA,CAASA;IAE3CQ,CAACA;IArDaR,uBAAaA,GAAWA,EAAEA,CAACA;IAC3BA,yBAAeA,GAAWA,EAAEA,CAACA;IAC7BA,wBAAcA,GAASA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;IACnCA,sBAAYA,GAASA,IAAIA,IAAIA,CAACA,CAACA,CAACA,CAACA;IAmDnDA,gBAACA;AAADA,CAACA,AAvDD,IAuDC"}
\ No newline at end of file
diff --git a/js/Registers.ts b/js/Registers.ts
index d6b07bc..02aad21 100644
--- a/js/Registers.ts
+++ b/js/Registers.ts
@@ -4,7 +4,7 @@ enum Flags { CARRY, ADDSUB, PARITY, UNUSED1, HALF, UNUSED2, ZERO, SIGN }
 
 class Registers {
     public static byteRegisters: Byte[] = [];
-    public static shadowRegisters: Byte[] = [];
+    public static shadowRegisters: Word[] = [];
     public static programCounter: Word = new Word(0);
     public static stackPointer: Word = new Word(0);
 
@@ -18,7 +18,10 @@ class Registers {
         for(var i; i < tmp.length; i++)
             Registers.byteRegisters[tmp[i]] = new Byte(0);
 
-
+        Registers.shadowRegisters["AF"] = new Word(0);
+        Registers.shadowRegisters["BC"] = new Word(0);
+        Registers.shadowRegisters["DE"] = new Word(0);
+        Registers.shadowRegisters["HL"] = new Word(0);
     }
 
     public static GenerateWord(high: string, low: string): Word {
@@ -34,7 +37,24 @@ class Registers {
         return Registers.byteRegisters["F"].Test(flag);
     }
 
-    public static ExchangeAccumlatorFlags() {
+    public static ExchangeAFShadow() {
+        var tmp = Registers.shadowRegisters["AF"];
+        Registers.shadowRegisters["AF"].Set(Registers.byteRegisters["A"], Registers.byteRegisters["F"]);
+        Registers.byteRegisters["A"] = tmp.High();
+        Registers.byteRegisters["F"] = tmp.Low();
+    }
+
+    public static ExchangeShadow() {
+        var regs = ["BC", "DE", "HL"];
+        for(var reg in regs) {
+            var tmp = Registers.shadowRegisters[regs[reg]];
+            Registers.shadowRegisters[regs[reg]].Set(Registers.byteRegisters[regs[reg][0]], Registers.byteRegisters[regs[reg][1]]);
+            Registers.byteRegisters[regs[reg][0]] = tmp.High();
+            Registers.byteRegisters[regs[reg][1]] = tmp.Low();
+        }
+    }
+
+    public static Exchange(a: string, b: string) {
 
     }
 }
\ No newline at end of file
diff --git a/js/ops/0x0.js b/js/ops/0x0.js
index 5f2969b..d53b2fd 100644
--- a/js/ops/0x0.js
+++ b/js/ops/0x0.js
@@ -44,6 +44,19 @@ TI.Opcodes[0x07] = function (args) {
     return [1, 4];
 };
 TI.Opcodes[0x08] = function (args) {
-    return [];
+    Registers.ExchangeAFShadow();
+    return [1, 4];
+};
+TI.Opcodes[0x09] = function (args) {
+    // add hl, bc
+    return [1, 11];
+};
+TI.Opcodes[0x0A] = function (args) {
+    Registers.byteRegisters["A"] = Memory.Get(Registers.GenerateWord("B", "C"));
+    return [1, 7];
+};
+TI.Opcodes[0x0B] = function (args) {
+    // dec b
+    return [1, 4];
 };
 //# sourceMappingURL=0x0.js.map
\ No newline at end of file
diff --git a/js/ops/0x0.js.map b/js/ops/0x0.js.map
index 9601aa9..1746930 100644
--- a/js/ops/0x0.js.map
+++ b/js/ops/0x0.js.map
@@ -1 +1 @@
-{"version":3,"file":"0x0.js","sourceRoot":"","sources":["0x0.ts"],"names":[],"mappings":"AAAA,mCAAmC;AACnC,kCAAkC;AAClC,qCAAqC;AACrC,wCAAwC;AACxC,iCAAiC;AAEjC,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;IACvC,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;IACvC,MAAM,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC;AACnB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,MAAM,CAAC,GAAG,CAAC,SAAS,CAAC,YAAY,CAAC,GAAG,EAAC,GAAG,CAAC,EAAE,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC,CAAC;IAC1E,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IAEpC,AADA,SAAS;IACT,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,IAAI,GAAG,GAAG,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC;IACvC,IAAI,IAAI,GAAG,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;IAC/C,SAAS,CAAC,OAAO,CAAC,cAAY,EAAE,KAAK,CAAC,CAAC;IACvC,SAAS,CAAC,OAAO,CAAC,YAAU,EAAE,IAAI,CAAC,GAAG,EAAE,IAAI,CAAC,CAAC,CAAC;IAC/C,SAAS,CAAC,OAAO,CAAC,cAAY,EAAE,GAAG,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,KAAK,IAAI,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,IAAI,CAAC,CAAC;IACtG,SAAS,CAAC,OAAO,CAAC,YAAU,EAAE,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,IAAI,CAAC,IAAI,IAAI,CAAC,CAAC;IAC1D,SAAS,CAAC,OAAO,CAAC,YAAU,EAAE,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,CAAA;IACnE,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IAEpC,AADA,QAAQ;IACR,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;IACvC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,SAAS,CAAC,OAAO,CAAC,aAAW,EAAE,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAC;IAC7E,SAAS,CAAC,OAAO,CAAC,cAAY,EAAE,KAAK,CAAC,CAAC;IACvC,SAAS,CAAC,OAAO,CAAC,YAAU,EAAE,KAAK,CAAC,CAAC;IACrC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IAEpC,MAAM,CAAC,EAAE,CAAA;AACb,CAAC,CAAC"}
\ No newline at end of file
+{"version":3,"file":"0x0.js","sourceRoot":"","sources":["0x0.ts"],"names":[],"mappings":"AAAA,mCAAmC;AACnC,kCAAkC;AAClC,qCAAqC;AACrC,wCAAwC;AACxC,iCAAiC;AAEjC,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;IACvC,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;IACvC,MAAM,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC;AACnB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,MAAM,CAAC,GAAG,CAAC,SAAS,CAAC,YAAY,CAAC,GAAG,EAAC,GAAG,CAAC,EAAE,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC,CAAC;IAC1E,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IAEpC,AADA,SAAS;IACT,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,IAAI,GAAG,GAAG,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC;IACvC,IAAI,IAAI,GAAG,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;IAC/C,SAAS,CAAC,OAAO,CAAC,cAAY,EAAE,KAAK,CAAC,CAAC;IACvC,SAAS,CAAC,OAAO,CAAC,YAAU,EAAE,IAAI,CAAC,GAAG,EAAE,IAAI,CAAC,CAAC,CAAC;IAC/C,SAAS,CAAC,OAAO,CAAC,cAAY,EAAE,GAAG,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,KAAK,IAAI,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,IAAI,CAAC,CAAC;IACtG,SAAS,CAAC,OAAO,CAAC,YAAU,EAAE,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,IAAI,CAAC,IAAI,IAAI,CAAC,CAAC;IAC1D,SAAS,CAAC,OAAO,CAAC,YAAU,EAAE,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,CAAA;IACnE,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IAEpC,AADA,QAAQ;IACR,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;IACvC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,SAAS,CAAC,OAAO,CAAC,aAAW,EAAE,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAC;IAC7E,SAAS,CAAC,OAAO,CAAC,cAAY,EAAE,KAAK,CAAC,CAAC;IACvC,SAAS,CAAC,OAAO,CAAC,YAAU,EAAE,KAAK,CAAC,CAAC;IACrC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,SAAS,CAAC,gBAAgB,EAAE,CAAC;IAC7B,MAAM,CAAC,CAAC,CAAC,EAAC,CAAC,CAAC,CAAC;AACjB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IAEpC,AADA,aAAa;IACb,MAAM,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC;AACnB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IACpC,SAAS,CAAC,aAAa,CAAC,GAAG,CAAC,GAAG,MAAM,CAAC,GAAG,CAAC,SAAS,CAAC,YAAY,CAAC,GAAG,EAAC,GAAG,CAAC,CAAC,CAAC;IAC3E,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC;AAEF,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,GAAG,UAAS,IAAY;IAEpC,AADA,QAAQ;IACR,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;AAClB,CAAC,CAAC"}
\ No newline at end of file
diff --git a/js/ops/0x0.ts b/js/ops/0x0.ts
index 964cdfd..fae2585 100644
--- a/js/ops/0x0.ts
+++ b/js/ops/0x0.ts
@@ -53,6 +53,21 @@ TI.Opcodes[0x07] = function(args: Byte[]): number[] {
 };
 
 TI.Opcodes[0x08] = function(args: Byte[]): number[] {
+    Registers.ExchangeAFShadow();
+    return [1,4];
+};
 
-    return []
+TI.Opcodes[0x09] = function(args: Byte[]): number[] {
+    // add hl, bc
+    return [1, 11];
+};
+
+TI.Opcodes[0x0A] = function(args: Byte[]): number[] {
+    Registers.byteRegisters["A"] = Memory.Get(Registers.GenerateWord("B","C"));
+    return [1, 7];
+};
+
+TI.Opcodes[0x0B] = function(args: Byte[]): number[] {
+    // dec b
+    return [1, 4];
 };
\ No newline at end of file