Does anyones where or how can i find on internet DATA-SHEET about microcontroller that control step-motor inside PC's floppy disk (3-1/2)? I' m tring to control the step-motor chip using PIC16c84 , but in don't understand PINs of it . I'have just tried many time dissolding it (it's a SMT) a testing signals on the PCB whitout it (and with it too) but i i think that there are some HF signals (I have not an oscilloscope so up 10Hz for me is HF) and any time is a FLOP . Any suggestion is good :) !!!! Francesco Lo Conte [s191448@studenti.ing.unipi.it]