Am Mittwoch, 30. August 2023, 15:45:45 CEST schrieb Francesco Messineo: > FWIW, 8500 vs 6510 can be detected in software by checking how many > cycles it takes for the unconnected port bits to decay from 1 to 0 > level when the DDR is switched from output to input. > I made a test ASM for proof of concept years ago. The decay time is > also temperature dependent, but the 8500 is some (binary) order of > magnitude slower due to probably much better gate insulation and lower > die temperature (gate leakage depends on temperature). No, that doesn't work reliably. There is some sort of correlation, but as said, its not reliable. The same problem exists with the decay times when reading SID registers. -- http://hitmen.eu http://ar.pokefinder.org http://vice-emu.sourceforge.net http://magicdisk.untergrund.net It doesn't matter who votes. What matters is who counts the votes. <Josef Stalin>Received on 2023-08-30 19:00:03
Archive generated by hypermail 2.3.0.