More op assembly defined.

src/MOS6502.js

           // Variable label!!
         } else if (tokens[0][tokens[0].length - 1] === ':'){
           // Jump label!!
-        } else if (tokens[0].length === 3){ 
+        } else if (tokens[0].length === 3){
+
+          let StoreSingleOp = (code)=>{
+            if (tokens.length === 1){
+              op.push(code);
+              this.__PC += 1;
+              return true;
+            }
+            return false;
+          };
+
+          let StoreBranchOp = (code) => {
+            if (tokens.length === 2){
+              if (token[1][0] === '$' && (tokens[1].length === 3 || tokens[1].length === 5)){
+                let v = parseInt(token[1].substr(1), 16);
+                if (isNaN(v))
+                  return false;
+                if (v < this.__PC - 127 || v > this.__PC + 128)
+                  throw new Error("Branch exceeds maximum number of bytes on program address " + toHexString(this.__PC));
+                v = v - this.__PC;
+                op.push(code);
+                op.push((v >= 0) ? v : v + 255);
+                this.__PC += 2;
+              }
+            }
+            return false;
+          };
+
+          let StoreOp = (codes, mint, maxt) => {
+            if (tokens.length >= mint && tokens.length <= maxt){
+              let mv = addrModeVal(tokens[1], (tokens.length === 3) ? tokens[2].toUpperCase(), null);
+              let modea = true;
+              switch(mv[0]){
+                case "i":
+                  modea = codes[0] !== null;
+                  if (modea){
+                    op.push(codes[0]);
+                    op.push(mv[1]);
+                    this.__PC += 2;
+                  } break;
+                case "z":
+                  modea = codes[1] !== null;
+                  if (modea){
+                    op.push(codes[1]);
+                    op.push(mv[1]);
+                    this.__PC += 2;
+                  } break;
+                case "zX":
+                  modea = codes[2] !== null;
+                  if (modea){
+                    op.push(codes[2]);
+                    op.push(mv[1]);
+                    this.__PC += 2;
+                  } break;
+                case "a":
+                  modea = codes[3] !== null;
+                  if (modea){
+                    op.push(codes[3]);
+                    op.push(mv[1] & 0x000000FF);
+                    op.push((mv[1] & 0x0000FF00) >> 8);
+                    this.__PC += 3;
+                  } break;
+                case "aX":
+                  modea = codes[4] !== null;
+                  if (modea){
+                    op.push(codes[4]);
+                    op.push(mv[1] & 0x000000FF);
+                    op.push((mv[1] & 0x0000FF00) >> 8);
+                    this.__PC += 3;
+                  } break;
+                case "aY":
+                  modea = codes[5] !== null;
+                  if (modea){
+                    op.push(codes[5]);
+                    op.push(mv[1] & 0x000000FF);
+                    op.push((mv[1] & 0x0000FF00) >> 8);
+                    this.__PC += 3;
+                  } break;
+                case "nX":
+                  modea = codes[6] !== null;
+                  if (modea){
+                    op.push(codes[6]);
+                    op.push(mv[1]);
+                    this.__PC += 2;
+                  } break;
+                case "nY":
+                  modea = codes[7] !== null;
+                  if (modea){
+                    op.push(codes[7]);
+                    op.push(mv[1]);
+                    this.__PC += 2;
+                  } break;
+              }
+              if (modea === false)
+                throw new Error("Op-code does not support implied mode on program address " + toHexString(this.__PC));
+              return true;
+            }
+            return false;
+          };
+
           let procFailed = false;
           let mv = null;
           // Possible op code.
           switch(tokens[0].toLowerCase()){
 // --- ADC
             case 'adc':
+              procFailed = StoreOp([0x69, 0x65, 0x75, 0x6D, 0x7D, 0x79, 0x61, 0x71], 2, 3);
+              /*
               if (tokens.length >= 2 && tokens.length <= 3){
-                mv = addrModeVal(tokens[1]);
+                mv = addrModeVal(tokens[1], (tokens.length === 3) ? tokens[2].toUpperCase(), null);
                 this.__PC += 2;
                 switch(mv[0]){
                   case "i":
                     break;
                 }
               } else { procFailed = true; }
+              */
               break;
 // --- AND
             case 'and':
+              procFailed = StoreOp([0x29, 0x25, 0x35, 0x2D, 0x3D, 0x39, 0x21, 0x31], 2, 3); 
               break;
 // --- ASL
             case 'asl':
+              if (tokens.length === 2){
+                if (tokens[1].toUpperCase() === 'A'){
+                  op.push(0x0A);
+                  this.__PC += 1;
+                  break;
+                }
+              }
+              procFailed = StoreOp([null, 0x06, 0x16, 0x0E, 0x1E, null, null, null], 2, 3);  
               break;
 // --- BCC
             case 'bcc':
-              break;
+              procFailed = StoreBranchOp(0x90); break;
 // --- BCS
             case 'bcs':
-              break;
+              procFailed = StoreBranchOp(0xB0); break;
 // --- BEQ
             case 'beq':
-              break;
+              procFailed = StoreBranchOp(0xF0); break;
+// --- BIT
             case 'bit':
-              break;
+              procFailed = StoreOp([null, 0x24, null, 0x2C, null, null, null, null], 2, 2); break;
+// --- BMI
             case 'bmi':
-              break;
+              procFailed = StoreBranchOp(0x30); break;
+// --- BNE
             case 'bne':
-              break;
+              procFailed = StoreBranchOp(0xD0); break;
+// --- BPL
             case 'bpl':
-              break;
+              procFailed = StoreBranchOp(0x10); break;
 // --- BRK
             case 'brk':
-              if (tokens.length === 1){
-                op.push(0x00);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0x00); break;
+// --- BVC
             case 'bvc':
-              break;
+              procFailed = StoreBranchOp(0x50); break;
+// --- BVS
             case 'bvs':
-              break;
+              procFailed = StoreBranchOp(0x70); break;
 // --- CLC
             case 'clc':
-              if (tokens.length === 1){
-                op.push(0x18);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0x18); break;
 // --- CLD
             case 'cld':
-              if (tokens.length === 1){
-                op.push(0xD8);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0xD8); break;
 // --- CLI
             case 'cli':
-              if (tokens.length === 1){
-                op.push(0x58);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0x58); break;
 // --- CLV
             case 'clv':
-              if (tokens.length === 1){
-                op.push(0xB8);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0xB8); break;
+// --- CMP
             case 'cmp':
-              break;
+              procFailed = StoreOp([0xC9, 0xC5, 0xD5, 0xCD, 0xDD, 0xD9, 0xC1, 0xD1], 2, 3); break;
+// --- CPX
             case 'cpx':
-              break;
+              procFailed = StoreOp([0xE0, 0xE4, null, 0xEC, null, null, null, null], 2, 2); break;
+// --- CPY
             case 'cpy':
-              break;
+              procFailed = StoreOp([0xC0, 0xC4, null, 0xCC, null, null, null, null], 2, 2); break; 
+// --- DEC
             case 'dec':
-              break;
+              procFailed = StoreOp([null, 0xC6, 0xD6, 0xCE, 0xDE, null, null, null], 2, 3); break; 
 // --- DEX
             case 'dex':
-              if (tokens.length === 1){
-                op.push(0xCA);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0xCA); break;
 // --- DEY
             case 'dey':
-              if (tokens.length === 1){
-                op.push(0x88);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0x88); break;
+// --- EOR
             case 'eor':
-              break;
+              procFailed = StoreOp([0x49, 0x45, 0x55, 0x4D, 0x5D, 0x59, 0x41, 0x51], 2, 3); break; 
+// --- INC
             case 'inc':
-              break;
+              procFailed = StoreOp([null, 0xE6, 0xF6, 0xEE, 0xFE, null, null, null], 2, 3); break; 
 // --- INX
             case 'inx':
-              if (tokens.length === 1){
-                op.push(0xE8);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0xE8); break;
 // --- INY
             case 'iny':
-              if (tokens.length === 1){
-                op.push(0xC8);
-                this.__PC += 1
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0xC8); break;
+// --- JMP
             case 'jmp':
               break;
+// --- JSR
             case 'jsr':
               break;
+// --- LDA
             case 'lda':
               break;
+// --- LDX
             case 'ldx':
               break;
+// --- LDY
             case 'ldy':
               break;
+// --- LSR
             case 'lsr':
               break;
 // --- NOP
             case 'nop':
-              if (tokens.length === 1){
-                op.push(0xEA);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0xEA); break;
+// --- ORA
             case 'ora':
               break;
+// --- PHA
             case 'pha':
               break;
+// --- PHP
             case 'php':
               break;
+// --- PLA
             case 'pla':
               break;
+// --- PLP
             case 'plp':
               break;
+// --- ROL
             case 'rol':
               break;
+// --- ROR
             case 'ror':
               break;
+// --- RTI
             case 'rti':
               break;
+// --- RTS
             case 'rts':
               break;
+// --- SBC
             case 'sbc':
               break;
 // --- SEC
             case 'sec':
-              if (tokens.length === 1){
-                op.push(0x38);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0x38); break;
 // --- SED
             case 'sed':
-              if (tokens.length === 1){
-                op.push(0xF8);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0xF8); break;
 // --- SEI
             case 'sei':
-              op.push(0x78);
-              this.__PC += 1;
+              procFailed = StoreSingleOp(0x78); break;
               break;
+// --- STA
             case 'sta':
               break;
+// --- STX
             case 'stx':
               break;
+// --- STY
             case 'sty':
               break;
 // --- TAX
             case 'tax':
-              if (tokens.length === 1){
-                op.push(0xAA);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0xAA); break;
 // --- TAY
             case 'tay':
-              if (tokens.length === 1){
-                op.push(0xA8);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0xA8); break;
 // --- TSX
             case 'tsx':
               break;
 // --- TXA
             case 'txa':
-              if (tokens.length === 1){
-                op.push(0x8A);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0x8A); break;
 // --- TXS
             case 'txs':
               break;
 // --- TYA
             case 'tya':
-              if (tokens.length === 1){
-                op.push(0x98);
-                this.__PC += 1;
-              } else { procFailed = true; }
-              break;
+              procFailed = StoreSingleOp(0x98); break;
 // --- ---
             default:
               throw new Error("Unknown op-code '" + tokens[0].toUpperCase() + "' at program address " + toHexString(this.__PC));