I have a problem (what a surprise, huh?) with the MPLAB. It has a tool or something that helps to measure the exact time it takes for a routine to execute. No Osciloscopes, no pins to make high / low etc.

Yes, the asm way will take from 1 to 32 times since we do not know the times to shift. But as you showed in #6, it takes give or take 5 asm instructions for one shift, max 32x5. Basic I think cannot beat that.

Ioannis