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Index > DOS > Writing directly into Vram without interrupts

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amrashraf



Joined: 26 Apr 2022
Posts: 3
amrashraf
I need to know how to write a 10*10 matrix of pixels immediately into Vram instead of copying byte or word by word

Also, I would be glad if someone told me how to think of a game like xonix
How to do filling algorithm on assembly

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Alphaboy16
Post 26 Apr 2022, 02:02
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 18625
Location: In your JS exploiting you and your system
revolution
If you are in a graphics mode then often the video RAM is often mapped to address 0xa0000 as a simple linear buffer.

Depending upon the mode you might have one byte per pixel through the palette DAC, or two bytes RGB 5:65 or 5:5:5, or four bytes as RGB 8:8:8, or some other combination that produces colours from the byte values.
Post 26 Apr 2022, 06:46
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