On Wed, 30 Apr 2014, William Levak wrote: The formula for the resolution is the resolution of the signal from the CRTC. 80 column machines double the horizontal resolution by logic on the system board. On examining the data closer, I see that there are both 40 and 80 column 50 Hz machines using the same CRTC data. The row in the table labeled "40 col. 50 Hz" should read "40/80 col. 50 Hz". These are probably the standard values. That leaves two ROMs using different values. One is clearly PAL. I don't recognize the other. It isn't NTSC. wlevak@sdf.lonestar.org SDF Public Access UNIX System - http://sdf.lonestar.org Message was sent through the cbm-hackers mailing listReceived on 2014-04-30 16:00:02
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