Software Support > GroovyMAME
Can CRT_Emudriver Driver Cause Colour Problems??
lettuce:
For My Scart CRT TV setup i had a X600 Pro ATI card which had perfect colours on both my BUSH and SHARP test CRT TV sets. I decided to upgarde the gfx card to a HD4670 1GB card this requires the, 'crt_emudriver_9.3_1.2a_x64_multisync' driver and not the 'crt_emudriver_6.5_1.2a_x64_multisync' so i uninstalled the old 6.5 crt emudriver driver and installed the 9.3 version. Now for some unknown reason on the SHARP TV the colours do not appear to be correct now, theres either too much yellow or too much red in the picture i cant tell which but its not right thats for sure.
To start off i though it must be a dud gfx card but i connected it up to the BUSH TV and the colours were correct on that so it cant be the gfx card, then i though it must be the SHARP TV at fault so i plugged in my Super Nintendo into the SHARP and the colours where fine when using the Super Nintendo so its not the SHARP TV either. Can the emudriver 9.3 cause such a colour issue??
Calamity:
--- Quote from: lettuce on December 30, 2011, 01:32:02 pm ---Can the emudriver 9.3 cause such a colour issue??
--- End quote ---
Well, at this point I'm open to believe nearly anything, but the weird thing here is that the BUSH TV still looks fine with the new card and drivers.
Sometimes when horizontal porch values are too low for a specific monitor you can see some tint variations in the picture, so maybe try increasing these to see if you see any change.
lettuce:
But these values are the same as when i was using the 6.5 drivers, does the 9.3 drivers do something different, or is it gfx card dependant?
Calamity:
--- Quote from: lettuce on January 01, 2012, 09:56:17 am ---But these values are the same as when i was using the 6.5 drivers, does the 9.3 drivers do something different, or is it gfx card dependant?
--- End quote ---
9.3 should work just like 6.5, but there might be an hypothetical tiny difference in the timings between both cards as their final dotclocks won't match. However this was just an idea, I don't have a clue of what's happening.
lettuce:
Ok so do i need to change all 2 values relating to the horizontal porch, 'HFrontPorch' & 'HBackPorch'?
As atm my videomode is..
15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.160, 1.056, 0, 0, 288, 448
so should i increase all 3 horizontal porch value by say 0.500 so the new videomode would be....
15625-16200, 49.50-65.00, 2.500, 4.700, 8.500, 0.064, 0.160, 1.056, 0, 0, 288, 448
?
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