On 12/10/2011 08:51 PM, Segher Boessenkool wrote: > >> When testing a C64, I use the type check program mentioned above plus >> a RAM test and the 'Edge of Disgrace' demo. The latter has a few >> 'plasma' effects and on those you notice that they were written for a >> 9-luma VIC. On the 6569R1 they look less smooth. > > You could just switch the monitor to greyscale :-P That takes out the color effects that are part of the demo. I don't plan on using the 6569R1 regularly. But it's nice to have a really old C64 (includes real PLA and -02 Kernal ROM) handy when checking software compatibility. The RAM test I use crashes on the -02 ROM, plug in a -03 ROM and it works. Back then the CIAs were also labled 6526R4. MOS dropped the 'R4' later. Gives you an idea how long it took to get those working. :) >> To bad no one has yet been able to find a software trick to >> distinguish between the 6510 and the 8500. :) > > They didn't? I thought you could do the timing thing with the high > port pins? Very unstable of course... Yes, there seems to be some kind of overlap so that there is no way to be 100% sure whether you have a 6510 or a 8500. All you seem to be able to do is get an approximation of the die temperature if you take a measurement at power on and re-measure later. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2011-12-10 21:00:21
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