Last month I was helping colleague to finish his project for master, and he was using microC. To test hardware we just put some LCD print's, and monitor 4 inputs and count pulses on inputs, let say not more than 100 lines, and that used about 7K of code space, and it take almost 40mS for one pass without LCD...
Tried same with PBP and it took less than few mS with LCD print...