Out of range on my old 15" LCD

kilograham / b-em

An RP2040 and Raspberry Pi 2/3/4/Zero 2 W version of an opensource BBC Micro emulator originally for Win32 and Linux

GNU General Public License v2.0

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Closed CHiPs44 closed 3 years ago

CHiPs44 commented 3 years ago

Hello,

It seems my old 15" 1024x768 doesn't like current b-em on my Pico.

It spits out an "Out of range" message with all UF2 files that I built.

On a much more modern 21" Full HD LCD monitor, with the same UF2, it displays the BBC's initial screen with some image "jerks".

I didn't manage to find the scanvideo mode used by lurking into the source.

How can I help to debug this issue?

CHiPs44 commented 3 years ago

As said in https://stardot.org.uk/forums/viewtopic.php?p=311225&sid=afcfa621f547ac9d7a156aa5f57791c8#p311225, the emulator uses a pixel doubled / quadrupled variation of a 1280x1024 to achieve a resolution of 640x256, so it seems it won't work on this old monitor.

CHiPs44 commented 3 years ago

Should have closed this issue.