Thanks for reply
I have 6 emulator for 8051, 3 Micetek, one Brendes and 2 Deneb but old, max 16Mhz, all others are 40Mhz.
There are only a small problem, I work whith old compiler PLM51, and for all
others resource on the chip, I made program in Assembler, and after I compil all PLM51 and assembler, but I sink is arrived the time for to use only C language, I have buy a Keil C but when is 25 years i work in PLM, is very difficolt to change, anyway I am looking for the chip you have suggest, but you said, that is free, other is free, but anything if free?????
I do not sing sò, OK thenks for all, now I look for new chip
regards
Maurizio