[206A] >>> Interesting! I suspect that is an 8520 actually... Can you test >>> that? >> >> It's soldered to a C64 mainboard and behaves like a 6526A as far as >> the software goes. The 8520 doesn't have the RTC but a 24Bit timer >> instead as far as I know, so I think you'd notice if you tried to >> use a 8520 instead of a 6526. > > Not if you do not use any program that uses the TOD. And there are not > many that do. The KERNAL does not use the TOD at all. Yep, exactly. >>> Supposedly they also did an 852x that has only the low four ports >>> (or >>> the rest is not functional, anyway), i.e. the two parallel ports >>> only; >>> it was called something like 5210 (I forgot the exact name, and >>> cannot >>> find it anymore). >> >> 5710 if I remember right. > > The 5710 from the 128DCR (and 1571CR)? That's the one. Pretty obvious how they came up with that chip name, heh :-) > That's more than a stripped-down > 6526, as it also contains "an equivalent" (well, or so...) of the > WD1770/1772 for MFM access. Ah, that makes a lot more sense, thanks for the info. Segher Message was sent through the cbm-hackers mailing listReceived on 2011-12-11 21:00:38
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