Hi ! I have an Indus GT drive with SY6502 (and 6522s as well.... and even the RAM is from Synertek) and it works fine. One of my Oceanics (or clones) also has SY6502 (others UMC or so)... Regards, Konrad 2012/4/11 <miika.seppanen@sci.fi> > Hello, > > My VC-1541 (an early one with cream case) has a SY6502, and judging from > the production dates, I presume it's an original installation. I bought the > drive from original owner, and he never mentioned anything about repairs. > Never had any problems with any software. I don't know, if any software > uses undefined op-codes on 1541. > > -Miika > > > didier derny [didier@aida.org] kirjoitti: > >> 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 list >> >> > > Message was sent through the cbm-hackers mailing list > Message was sent through the cbm-hackers mailing listReceived on 2012-04-12 09:00:09
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