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Atari demoscene BBS
| Re: put colours in STE top border |
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Posted by: evil
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Jun,04.2012-13:12
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After this you are synced to 8 cycles accuracy or so, you need to further stabilize the synchro.
You do this with a small shifting that some clever guy came up with. So depending on the cycle state you got synced with, it shifts more or less to get into perfect syncro.
Here's a snippet from my demosystem macro for top border+hardsync.
http://files.dhs.nu/files_coding/hardsync.s
This is run at a Timer A interrupt with divide 4 and 97 data from start of VBL. See the demosystem for more details.
Looking at it now I can't tell why I put SR back to $2300 before the hardsync. It looks like a bug and should be just before the RTE :)
--
Anders Eriksson
ae@dhs.nu
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[All messages in this thread]
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Topic
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Posted by
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Date
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put colours in STE top border
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tomchi
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Jun,04.2012-11:08
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Re: put colours in STE top border
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evil
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Jun,04.2012-13:12
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Re: put colours in STE top border
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Bod/STAX
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Jun,04.2012-14:56
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Re: put colours in STE top border
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Bod/STAX
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Jun,04.2012-14:57
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Re: put colours in STE top border
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tomchi
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Jun,04.2012-15:33
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Re: put colours in STE top border
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PeP
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Jun,05.2012-18:14
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put colours in STE top border
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saulot
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Jun,05.2012-22:10
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Re: put colours in STE top border
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ggn
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Jun,05.2012-22:40
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Re: put colours in STE top border
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PeP
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Jun,07.2012-10:34
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Re: put colours in STE top border
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PeP
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Jun,06.2012-14:27
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