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Software Support => GroovyMAME => Topic started by: pacboy on June 02, 2018, 10:45:07 am

Title: Wei-Ya M3129 Monitor Preset
Post by: pacboy on June 02, 2018, 10:45:07 am

Hello
Comparing the values of the built-in monitor preset for this monitor with the attached spec sheet from the Wei-Ya website confuses me.

 // Wei-Ya M3129
   m3129
   
      crt_range0  15250-16500, 40-80, 2.187, 4.688, 6.719, 0.190, 0.191, 1.018, 1, 1, 192, 288, 448, 576
      crt_range1  23900-24420, 40-80, 2.910, 3.000, 4.440, 0.451, 0.164, 1.048, 1, 1, 384, 400, 0, 0
      crt_range2  31000-32000, 40-80, 0.636, 3.813, 1.906, 0.318, 0.064, 1.048, 1, 1, 400, 512, 0, 0

The preset seems to extend the range of the monitor beyond what it's capable of.  For example, in crt_range0 the horizontal frequency is 15250-16500.  The spec sheet says 15500-16000 is acceptable if you look at the timing chart.  The other 2 ranges also don't match the specs.
And can someone explain why the general specifications page states that the vertical frequency range is 47-70HZ, but then on the timing chart it says 60HZ+/-1.5HZ?  The timing chart says it can only operate from 58.5-61.5HZ in the 15K range.

Thanks