Hi Pavel, what is the state of the 6702 chip schematics? Have you done them? I know the 6702 problem seems solved as we have http://www.zimmers.net/anonftp/pub/cbm/documents/chipdata/6702.txt now and a working VICE emulation, but it would be nice to have that confirmed. Many thanks! Andé On Friday 22 February 2013 02:31:14 you wrote: > Hello. > > I've drawn layers of 6702 based on die shot published on visual6502. As the > chip was not delayered yet the diffusion and buried contact layers are > sometimes only guesses as they are not visible when hidden below the metal > layer. Anyways I succeded in simulation of the chip and the results were > exactly what expected for repetitive inputs 00-01, 00-03 and 00-81 (hexa). I > did not test the other sequences because I suppose that they are OK. Maybe > if someone here has some more elaborate (not repeating) sequence for me to > test I'll test it. > > If no one else wants to do that I can draw the schematic of the chip and do > some analysis. The chip itself looks quite simply, it consists of 1249 > transistors. > Below is the copy of my posting to visual6502 forum - if you try to run my > simulator don't panic, it's quite slow, it runs for several minutes (some > 85s on my i7): > > ============================================================================ > = > > Hello. > > I was thinking if this chip is easy and repetitive enough that diffusion and > buried layers could be renostructed just by thinking and intuition. I > couldn't resist and I drew it and simulated it. > > Total: http://www.pastraiser.com/pictures/6702/6702_total.png > Metal: http://www.pastraiser.com/pictures/6702/6702_metal.png > Vias: http://www.pastraiser.com/pictures/6702/6702_vias.png ... Message was sent through the cbm-hackers mailing listReceived on 2013-12-27 00:00:09
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