On 07/24/2016 11:41 AM, Segher Boessenkool wrote: > On Sun, Jul 24, 2016 at 06:43:15AM +0200, Gerrit Heitsch wrote: >> On 07/23/2016 11:56 PM, Segher Boessenkool wrote: >>> On Sat, Jul 23, 2016 at 09:21:26PM +0200, Gerrit Heitsch wrote: >>>> Forgot that in the last post... There is also the 6510T as used in the >>>> 1551 floppy drive. It has the full 8 Bit port. To me the pinout suggests >>>> that it's just a different bond out of the 6510: >>> >>> Or (more likely imnsho) 8500. >> >> 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? Gerrit Message was sent through the cbm-hackers mailing listReceived on 2016-07-24 11:01:35
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