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I know that it's possible to remove top and bottom borders in C64 using assembly, and I've found example codes for that. But I can't find any example code for removing the side borders (which was invented by 1001 Crew.)

Anybody know any examples of that?

  • Look for "soft scrolling". One link which looks good is this one: http://1amstudios.com/2014/12/07/c64-smooth-scrolling/ I know I did this kind of code, but it was twenty years ago so I forgot most of it already. ;) Have fun. – Devolus Feb 18 '15 at 17:08
  • Thanks. It's a good link and I've found another very good link from the one you provided. But they both have nothing about side borders. –  Feb 18 '15 at 17:50
  • The register used for softscrolling is the one controlling the size of the border. That's how the softscrolling is implemented. By de-/increasing and shifting the border. AFAIK you can only use sprites in that open part anyway. No text. – Devolus Feb 18 '15 at 18:07

2 Answers2

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See my answer to "How do I show sprites in the border on C64" which contains the assembly code to remove the side and bottom/up border together with how it works.

Community
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Peter Kofler
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  • Thanks. I couldn't get it to work on ca65, but this is my answer. I asked for an example code. –  Feb 21 '15 at 13:18
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Example code can be found on 'codebase'...

JohnD
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