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Petey21
Account closed
Registered: Nov 2003
Posts: 49 |
Opening up borders
Here's a video (!) I found of a routine to open up the borders on a C64. No sound though, which would've been useful. Any comments on the code?
http://www.youtube.com/watch?v=Kh7xX1u3EME&NR |
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Codey
Registered: Oct 2005
Posts: 79 |
i used to time side borders using $d020 as a visual guide where i was positioned in the current scanline. when everything looked good with no flicker, i'd change the $d020s to $d016s. it helped alot and i didn't have to worry about counting opcode cycles. |
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Oswald
Registered: Apr 2002
Posts: 5094 |
yawn. |
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Radiant
Registered: Sep 2004
Posts: 639 |
Codey: It's actually simpler to just count them right from the beginning of the raster code, plus it helps your understanding of the VIC-II a lot more than trial & error until it looks right. :-)
Oh, almost forgot:
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Oswald
Registered: Apr 2002
Posts: 5094 |
oh sorry, looks like I should've posted instead some dumb coding tips that everyone knows since 10 years or more. |
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null
Account closed
Registered: Jun 2006
Posts: 645 |
Quote: oh sorry, looks like I should've posted instead some dumb coding tips that everyone knows since 10 years or more.
Oswald: Not everyone has been coding for a long time, like me... |
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HCL
Registered: Feb 2003
Posts: 728 |
Wake up! Open sideborder was done about 20 years ago :). However, i'm still not sure that Oswald knows the trick ;). |
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Radiant
Registered: Sep 2004
Posts: 639 |
HCL: Very true, not only is it old but also very simple (in principle at least), and I must admit I was a bit puzzled as to the very reason behind the post. :-)
However, the timing issues with the BA line etc can be quite confusing at first, so I see no harm in discussing it, especially since there are quite a few people here who haven't been at it for very long, myself included. |
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raven
Account closed
Registered: Jan 2002
Posts: 137 |
This video cracked me up hehe
But, whoever programmed that is typing waaay too slow! :) |
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null
Account closed
Registered: Jun 2006
Posts: 645 |
Quote: This video cracked me up hehe
But, whoever programmed that is typing waaay too slow! :)
erm... too slow? wait 'till you see me ;) |
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Danzig
Registered: Jun 2002
Posts: 440 |
20 years but still a miracle for some people :D
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