video ports

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Hamza

video ports

Post by Hamza »

I want to change my video mode in protected mode. I have to do it by using ports. Is there any simple example or tutorial that explains how can I manage to do so??
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Pype.Clicker
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Re:video ports

Post by Pype.Clicker »

i think there must be something in GeekOS or in Geezer. However, keep in mind that you'll only be able to access VGA modes (up to 0x13) this way: do not expect any SVGA as their programming may involve card-specific non-VGA ports ...
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Therx

Re:video ports

Post by Therx »

The code attached is my messy VGA driver. It goes into mode 12h (640x480x16).

[attachment deleted by admin]
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