HPWM is a hardware command. It runs while PAUSE is pausing except (it appears) when it is the first "active" command in the code. Really. Truly. The only difference between those two snippets of code is the WHILE statement at the beginning of the one that works.

Note: These few lines of code precede the 'main:' label. All I am trying to do is to demonstrate that the wheel controls are working before experimenting with racing. Once the program counter gets past 'main:' both versions run identically.

Ken