atarionline.pl Changing graphics mode in the middle of a line - Forum Atarum

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    4. Programowanie / Programming  »   Changing graphics mode in the middle of a line

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      • 1: CommentAuthorrudla
      • CommentTime18 Jan 2012 21:01
       
      Hi,

      is it possible (and how?) to change the graphics mode in the middle of a line?

      I.e. can I have left half of the screen in gr.8 and the right half in gr.15?

      I'm not interested in GTIA modes (i.e. modifying $D01B register) rather modes normally specified in DL.

      Thanks
      • 2:
         
        CommentAuthorjhusak
      • CommentTime18 Jan 2012 23:01
       
      Afaik the hw bug that causes not going into 8 gr mode again after change from Gtia modes works only when in the middle you switch to gtia gr.mode an off - like in famous Our 5oft demo.

      The two ways you can achieve this without gtia is to:
      - use sprites
      - use interlace :P

      But I think you are not interested in any of them.

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