Software Support > GroovyMAME
Trying to create monitor presets for KT-2914 (Betson-Kortek) MultiSync
Calamity:
Well this is getting interesting. It's a pity you didn't capture the vertical settings once fixed, though by your frequencies I can see you're still using the same 305 total lines.
So, did you need to perform any vertical centering or you fixed it by touching the horizontal geometry??
Seems like you only changed Hfront Porch and the DotClock.
Unfortunately you didn't lock Vfreq once the problematic mode was introduced, so the resulting Vfreq after tweaking things is 53.9 Hz, too far from the original one of 54.7 Hz
In other words, it's obvious that your monitor is using some sort of autoadjustment (multisync monitors do) but, could you tell if it's Vfreq driven?
RetroACTIVE:
I actually didn't mess with the vertical settings one bit. I'll go back and check to be sure.
Calamity:
--- Quote from: RetroACTIVE on February 10, 2012, 07:51:00 am ---I actually didn't mess with the vertical settings one bit. I'll go back and check to be sure.
--- End quote ---
That's possible. The interesting thing is that by just correcting the Vfreq and probably the Hfront porch a little bit the vertical geometry is also affected.
RetroACTIVE:
Screenshot of vertical settings:
Just a note... messing with the porch settings really didn't pull the pic in enough... when I was tweaking it it really didn't snap into place until I messed with the dot clock setting.
Calamity:
--- Quote from: RetroACTIVE on February 10, 2012, 09:01:14 am ---Just a note... messing with the porch settings really didn't pull the pic in enough... when I was tweaking it it really didn't snap into place until I messed with the dot clock setting.
--- End quote ---
You mean the vertical porches don't you? But did you just use the vertical centering or you tried increasing each porch individually, increasing the total number of lines by doing so? What I'd do is to keep vfreq locked at 54.7 and increase the vertical front porch.