Double buffering?

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tofro
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Re: Double buffering?

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Peter wrote: Sun May 12, 2024 8:03 am
tofro wrote: Sun May 12, 2024 7:55 am Even if Peter says there isn't, here is a working example of how you can make the second screen usable in QDOS machine code programs.
I didn't say there isn't. Just that I can not remember - which is a difference over 50 ;)

I wonder how much room your procedure would leave for the actual code and data on an unexpanded QL...
Well, not a lot :) But that never was a target for the Magnetic Adventures - They wouldn't run on an unexpanded machine anyhow. The code is also relatively generous using unrolled loops for the copying for speed (after all, every single picture that is displayed in the adventures means saving and restoring the buffers)


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