I HAVE COMPLETED A CODE IN C FOR AT89C2051 MCU..IT IS WORKING CORRECTTLY ON PROTEUS DESIGN BUT WHEN I AM GOING TO PROGRAM THE IC THROUGH PROGRAMMER IT PROGRAMS BUT VARIFICATION FAILS AT 1BYTE...PLS SMONE HELP ME OUT FROM THIS??/
there are really many posts in various places that all end up "after I replaced my xxx programmer with the Atmel $25 device, it worked".
The Atmel devices are, for programming, super sensitive re timing and levels