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Atari coding BBS
| Re: Rock-steady HBL |
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Posted by: evil
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Jul,19.2009-11:52
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Well my personal preference is to have the interupt code as short and simple as possible.
Less interference with for example music players and it's easier to get away without using registers.
Anohter (ugly) optimization is to have the HBL routines in low memory, then the last instruction would be move.l #address.w,$120.w, saves up another 4 cycles per scanline.
About HBL, yes you can use plain HBL without Timer-B involvement, the interupt starts later (at first visible pixel if I'm not wrong). The positive thing with the plain HBL is that you can get interupts at scanlines before/after the visible graphics scanlines.
About the children thing, I have to think about it ;-)
--
Anders Eriksson
ae@dhs.nu
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[All messages in this thread] [Start new thread]
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Topic
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Posted by
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Date
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Rock-steady HBL
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Per Almered (XiA)
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Jul,19.2009-10:22
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Re: Rock-steady HBL
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evil
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Jul,19.2009-10:53
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Re: Rock-steady HBL
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evil
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Jul,19.2009-11:11
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Re: Rock-steady HBL
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Per Almered (XiA)
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Jul,19.2009-11:25
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Re: Rock-steady HBL
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evil
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Jul,19.2009-11:52
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Re: Rock-steady HBL
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Per Almered (XiA)
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Jul,19.2009-11:59
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Re: Rock-steady HBL
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Kalms
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Jul,19.2009-12:47
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Re: Rock-steady HBL
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Per Almered (XiA)
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Jul,19.2009-12:59
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Re: Rock-steady HBL
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Per Almered (XiA)
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Jul,19.2009-13:59
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Re: Rock-steady HBL
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ggn
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Jul,21.2009-08:09
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Re: Rock-steady HBL
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Nicolas Pomarede
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Jul,20.2009-00:33
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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