Speed coding a small virtual machine

Me speed coding a fairly primitive vm, emulator in C. Nothing fancy, just trying speed coding for the first time. Code here: bytecode sample program: 00 00 0A 14 01 01 1E 14 02 02 0A 0A 03 03 1E 0A 04 00 04 01 04 02 04 03 all code is licensed under MIT copyright Dale Weiler (c) 2012 mit license: Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the Software ), to deal in the Software with