HI, the synertek components are known to be bugged. that's why we only used mos technology or rockwell. the 6522 and the 6551 where badly bugged but I never heard of this specific bug.... I dont know if these bugs were ever fixed. -- didier Le 11/04/2012 00:42, Rob Clarke a écrit : > Hello gentlemen, > > Does anyone know if the Synertek 6502 is 100% compatible with its MOS > cousin? I have one which I tried in an otherwise working PET and I get > "31653.4784 BYTES FREE" instead of 31743, which is 89.5216 bytes short > :-/ > > I know some of the later CMOS incarnations did not have the same > behaviour with undefined op-codes but a) this a 1984 chip and b) I > can't believe the PET kernal would use them anyway. > > It is also possible that this chip is just duff of course. > > Rob > > > Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2012-04-11 08:00:10
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