Got the start of encoding opcodes.

src/opcodes.c

@@ -16,6 +16,33 @@ Instruction instructions[OPCODECOUNT] = {
     { "nop", NOP, None, None}
 };
 
+unsigned char GetInstructionMask(TokenType type, TokenClass parameterOneType) {
+    switch (type) {
+        case COPY:
+            if (parameterOneType == Reg) return 0x20; //0b00100000;
+
+            return 0xA0;////0b10100000;
+        case ADD:
+            return 0x40;//0b01000000;
+        case SUB:
+            return 0x60;//0b01100000;
+        case CMP:
+            return 0x80;//0b10000000;
+        case JZ:
+            return 0x01;//0b00000001;
+        case INT:
+            return 0x02; //0b00000010;
+        case JMP:
+            return 0x06;//0b00000110;
+        case IN:
+            return 0x07;//0b00000111;
+        case OUT:
+            return 0x08;//0b00001000;
+        default:
+            return 0x00;
+    }
+}
+
 /*
     NOP  - 0000 0000 NOP
     JZ   - 0000 0001 JZ Address
@@ -24,14 +51,14 @@ Instruction instructions[OPCODECOUNT] = {
     RET  - 0000 0100 RET
     CALL - 0000 0101 CALL Address
     JMP  - 0000 0110 JMP Address
-
+    IN   - 0000 0111 IN Constant
+    OUT  - 0000 1000 OUT Constant
     COPY - 0010 0XXX COPY REG, REG
          - 0010 1XXX COPY REG, Constant    
          - 0011 0XXX COPY REG, Address
          - 1010 0XXX COPY Address, REG
          - 1010 1XXX COPY Address, Constant
          - 1011 0XXX COPY Address, Address
-
     ADD  - 0100 0XXX ADD REG, REG
          - 0100 1XXX ADD REG, Constant
     SUB  - 0110 0XXX SUB REG, REG
@@ -39,17 +66,11 @@ Instruction instructions[OPCODECOUNT] = {
     CMP  - 1000 0XXX CMP REG, REG
          - 1000 1XXX CMP REG, Constant
          - 1001 0XXX CMP REG, Address
-    //Read from port specified by either a register or a constant
-    IN   - 1100 0XXX IN REG
-         - 1101 0XXX IN Constant
-
-    OUT  - 1111 1XXX OUT REG
 */
 //COPY      X01X XXXX
 //ADD       010X XXXX
 //SUB       011X XXXX
 //CMP       100X XXXX
-//IN        110X XXXX
 //REG       XXX0 0XXX
 //Constant  XXX0 1XXX
 //Address   XXX1 0XXX