Willem Programmer MCS-51 AVR adapter Willem universal programmer 32pin to 8X51 MCS-51 AVR adapter.  Working with Willem universal programmer (standard and enhanced), you can program Atmel AT89xx (MCS-51), Intel 87xx and Atmel AVR 8-bit RISC AT90Sxxx. There are three versions and the functions are the same SELLING PRICE  is US$16.00 each (Adapter  only)