O.K. Mq from atariarea made adapter to replace 6502C by stabndard 6502: http://www.atari.org...ic.php?id=15241(Polish). For now it was tested with non-ECI 65XE (not working property - tests in progress) and with 4-bits RAM chip ECI board - working perfectly (test in progres).
I think, that it is good idea to use normal 6502, idea was borned by me and few other peaples, adapter was created by reverse-enginering of Atari 400/800 computers, where was use standard 6502. Adapter is simply and little.
If anyone interested, haw it was made - please visit atariarea and ask Mq (eventually i can write to him with link to this thread, if anyone interested it).