On Sun, Jul 24, 2016 at 12:58:36PM +0200, Gerrit Heitsch wrote: > >>Depends... On the later Chips, MOS included a number to the right of the > >>datecode. From what we've been able to determine, if it starts with a > >>'1', the Chip is NMOS and if it starts with a '2', the chip is HMOS-II. > >>The other numbers are the revision and match the R-number if it's > >>present on the chip. I have a few 6510 from after 1986 that have a '16' > >>printed there, so they would be NMOS which would suggest the 6510T also > >>to be NMOS since it's from 1984. > > > >Great info, thanks! > > I looked through my collection and found a GARY (5719) where this number > is a '42' and a BUSRTER (5721) with a '40', suggesting the '4' stands > for CMOS. I also have a C64-ROM with a '31', but no idea what the '3' > could mean. The '4510R3' from the C65 has a '53'... So what could the > '5' mean? Some more info, from c64 chips... Some 6502AD are marked "1D". Some roms are marked "01". All 1986 chips I found have no such marking, all 1987 chips do. So somewhere around this was introduced. Segher Message was sent through the cbm-hackers mailing listReceived on 2016-07-24 12:00:02
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