Hi AndrÃ©, It's still not clear to me why different register settings were required for 60/50mhz versions when the PET board and monitor operates on DC. Is it just to avoid minor artifacts due to ripple on the supply? Also, are the register sets independant of the monitor size? I would assume that all 80 column machines had 12" displays, but are the registers actually setting the machine up for 80 columns or setting it up for a 12" display? Rob > > I had investigated the PET CRTC functionality extensively when I wrote the PET emulator for VICE. It is documented in http://www.6502.org/users/andre/petindex/crtc.html > (BTW: the CRTC emulation in VICE is cycle-exact in case you want to test it :-)) > > AndrÃ© > Message was sent through the cbm-hackers mailing listReceived on 2012-04-25 08:00:22
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