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MiSTer-devel / Arcade-Pooyan_MiSTer

Arcade: Pooyan for MiSTer
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Color banding for VGA output in Vertical screen mode #5

Open eskwadrat opened 4 years ago

eskwadrat commented 4 years ago

Color banding on VGA output when switched to vertical screen mode when playing. Horizontal mode looks good. Confirmed on 3 different LCD monitors (Dell 20", Microtouch 15", Samsung 19") plus one CRT monitor (Viewsonic 17"). Per core developer feedback (Ash) it's most likely caused by bad timing (too short) for blanking signal (horizontal sync). That confuses the AGC circuits in most monitors, and causes that kind of banding. Similar issue observed for other arcade cores: burning rubber, catacomb, crazy kong, moon cresta, omega, pisces, pooyan, scramble, super glob.

darfpga commented 4 years ago

Modify line count to be closer to 60Hz and tune vsync pos (Pooyan) Pull request #9