> Most of my machines are pre-CRTC (8K Static PET model 2001, 32K > Dynamic PET model 2001-N (known as a 3032 in your part of the world), > so I was thinking primarily about them when I wrote that. Ah I see. Those are quite interesting, they don't even have an integrated video chip, but use a collection of TTL logic chips to produce the - fixed timing - video output. Here I am somewhat cheating in VICE. On reset, the CRTC emulation is programmed according to the 3032 timing parameters, and the CPU access is forbidden, so the values can not be changed :-) But, same effect, correct video output with fixed timing :-) > from CB1 level change to interrupt signal output. But my video tests and the > > for example the No PETs Allowed demo work on the PET real and in VICE! > > Tested on older PETs too or just newer ones? Only 8296 (my tests) and Fat-40 (i.e. with CRTC) for the demo. Both only work by reprogramming the CRTC chip. You can see the test programs (with VICE screen shots :-) here http://www.6502.org/users/andre/hwinfo/crtc/pet/index.html AndrÃ© -- GMX DSL Doppel-Flat ab 19,99 Euro/mtl.! Jetzt auch mit gratis Notebook-Flat! http://portal.gmx.net/de/go/dsl Message was sent through the cbm-hackers mailing listReceived on 2010-12-20 22:00:41
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