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Comment Re: What is a DOS screen? (Score 1, Informative) 155

Actually, DOOM was 320x240. 320x200 was Duke Nukem 3D. The reason to use 320x240 is because the pixels were square. However, the screen was split into banks of four because 320x240 pixels is too large to fit in a 64 KiB segment (ie pixels 0,4,8,⦠are in bank 0, pixels 1, 5,9,⦠are in bank 1, etc.) which makes accessing the framebuffer more complicated and slower. 320x200 has slightly rectangular pixels, but the framebuffer is linear and fits in 64KiB, which is the largest segment size that can be accesses in real mode DOS.

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