I can't read xls. Can you print it to a text file? On Sat, 26 Apr 2014, Rob Clarke wrote: > Hi William, > > I collected all the CRTC values from known ROM's into a spreadsheet, you can > find it here. > > http://inchocks.co.uk/commodore/PET/PET_CRTC.xls > > The one in the first column is row 8 on the sheet, which also gives you a > 50hz display but as you say, with slightly adjusted geometry. > > Rob > > On 26/04/2014 07:13, William Levak wrote: >> >> On zimmers.net under PET firmware there 3 separate images for the 901474-04 >> 50Hz screen editor ROM. I have compared them and found only a few >> differences. The affected region is listed below. The three columns below >> are the three different ROMs in the same order they are listed on >> zimmers.net. >> >> $E787 is the ROM checksum. >> >> The other data almost looks like random garbage, but it has a pattern. It >> took me a while to remember where I had seen that pattern. They are the >> register values for the CRTC. >> >> According to my CRTC notes, the last column is values for an external PAL >> monitor. The middle column is values for a 50 Hz internal monitor. >> I don't recognize the values in the first column. They are almost like the >> 60 Hz internal monitor, but the vertical spacing is different. >> >> >> E72A: 31 32 3F >> E72B: 28 28 28 >> E72C: 29 28 32 >> E72D: 0F 08 08 >> E72E: 27 26 20 >> E72F: 00 02 10 >> E730: 19 19 19 >> E731: 20 20 1D >> E732: 00 00 00 >> E733: 09 09 08 >> E734: 00 00 00 >> E735: 00 00 00 >> E736: 10 10 10 >> E737: 00 00 00 >> E738: 00 00 00 >> E739: 00 00 00 >> E73A: 00 00 00 >> E73B: 00 00 00 >> >> E73C: 31 32 3F >> E73D: 28 28 28 >> E73E: 29 28 32 >> E73F: 0F 08 08 >> E740: 31 30 24 >> E741: 00 00 11 >> E742: 19 19 19 >> E743: 25 25 20 >> E744: 00 00 00 >> E745: 07 07 07 >> E746: 00 00 00 >> E747: 00 00 00 >> E748: 10 10 10 >> E749: 00 00 00 >> E74A: 00 00 00 >> E74B: 00 00 00 >> E74C: 00 00 00 >> E74D: 00 00 00 >> >> E787: BF CD BF >> >> >> >> wlevak@sdf.lonestar.org >> SDF Public Access UNIX System - http://sdf.lonestar.org >> >> Message was sent through the cbm-hackers mailing list > > > Message was sent through the cbm-hackers mailing list > wlevak@sdf.lonestar.org SDF Public Access UNIX System - http://sdf.lonestar.org Message was sent through the cbm-hackers mailing listReceived on 2014-04-27 16:00:03
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