Lots of changes and too much dragging my feet on this. But I think this is going in the right direction now.

includes/token.h

@@ -5,12 +5,17 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdbool.h>
+#include "opcodes.h"
+#include "keywords.h"
 
 typedef enum {
     Empty,
     String,
     Number,
     Symbol,
+    Register,
+    Mnemonic,
+    Keyword,
     LineEnd = '\n',
     Colon = ':',
     Comma = ',',
@@ -32,6 +37,9 @@ typedef struct _token {
         char Operator[8];
         char* String;
         int Number;
+        Mnemonics Mnemonic;
+        Registers Register;
+        Keywords Keyword;
     } Value;
     int LineNumber;
     int ColumnNumber;