Hi, I recently ordered a new batch of PIC chips, only this time i got the 16F628A instead of the 16F628 i was using previously. I am using a p16pro paralel port programmer, and picall for windows (latest version), it apparently supports the 16F628A. It can not write even the first byte, its asif the chip is not entering programming mode ... i checked the voltages, they are okay, and it works with the 628 no problems. Does the 628a need more programming voltage ? Has anyone got experience with these chips and this progammer ? Thanks!, Alex.