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tonioni / WinUAE

WinUAE Amiga emulator
http://www.winuae.net/
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SUPERPLUS screenmode loses first line (1 pixel) #298

Closed simolg closed 3 months ago

simolg commented 3 months ago

With screenmode SUPERPLUS (high_res) the first line of the screen is hidden same problem configuring display: oversan / overscan+ / extreme . . . dragging the screen down one pixel seems OK

Capture_01

Enabling "ultra extreme debug" you see the first hidden line (upper dashed line)

Capture_04

My WinUAE 5.2.0 configuration is FullECS chipset (A600 specs), display line mode = double

Am I configuring something wrong? or is it a bug? thanks for developing WinUAE ;)

tonioni commented 3 months ago

It is a bug. Or more like incorrectly implemented undocumented ECS blanking feature because this behavior depends on how the mode is programmed (Is it CSYNC compatible or requires VGA like HV sync cable. AGA does not have this problem.). It probably was visible in some older version but that was only accidental.

Fixed in next version.