The loop synthesizes the 6-2 GCR decoding table in page 3. Bryan Parkoff <BParkoff@satx.rr.com> wrote: : I dump 5.25" Drive's PROM code into filename. Please take a look below. : Please tell me what is this? I have noticed that it uses too much loops : over and over before it begins to read track 0 and sector 0. Why is loop : necessary? What is the loop use for?