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Old 31 October 2018, 13:18   #599
plasmab
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Join Date: Sep 2016
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Quote:
Originally Posted by grond View Post
If the CPU does the scrolling, you need the required mem bandwidth to a) read the screen data, b) write it back and then c) read it through video DMA. If the video hardware can scroll by itself, you only need c). Three times less memory impact, I still think the Amiga way is quite clever.


You still need a write the buffer in the first place though. You do the shift as you create the scene. You don’t render, read, shift, write. Like I say... if you use your brain up front the result is the same.

The Amiga way just means you don’t have to think.
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