Add Break Points for Debugging #34
Description
Adding break point functionality to the VM would be extremely useful. You should be able to halt the execution of a program when reaching a particular instruction address (a.k.a. PC value). Currently, if you run into a bug deep within a program, it's not easy to reach that spot for debugging. Likewise, you should be able to halt execution when a particular value resides in one of the registers. Being able to combine halts based on both PC and register values would allow you to (for example) halt the computer at a particular point within a loop.