DEBRO Posted March 3, 2002 Share Posted March 3, 2002 You don't have to store your display list in RAM since it's not changing. You could point to your ROM code and save that RAM for something else. Actually I would recommend doing that. If you did it this way your code would look like... code: lda #<dlist sta SDLSTL lda #>dlist sta SDLSTH ... dlist2 .byte $70,$70,$70 .byte $42,$00,$10,$02 ... .byte $41 .word dlist2 Quote Link to comment Share on other sites More sharing options...
Tempest Posted March 3, 2002 Author Share Posted March 3, 2002 SDLSTL and SDLSTH are just pointers that I declare at the top right? Can you explain this a bit more, I think I'm starting to see the light. What book are you using to learn all of this? I was just using Arcade and Game design book I got off of AtariArchives.org, but it sounds like there's a better book out there. Tempest Quote Link to comment Share on other sites More sharing options...
DEBRO Posted March 3, 2002 Share Posted March 3, 2002 quote: Originally posted by Tempest: SDLSTL and SDLSTH are just pointers that I declare at the top right? I am using the equates.txt that Alan posted earlier. SDLSTL and SDLSTH are $05 and $06 respectively on the 5200. quote: Originally posted by Tempest: Can you explain this a bit more, I think I'm starting to see the light. What book are you using to learn all of this? I was just using Arcade and Game design book I got off of AtariArchives.org, but it sounds like there's a better book out there. Sure...what's happening here is the location for your display list in ROM is moved to the shadow registers. This is basically what you are doing when you are storing it RAM. There is really no need to store your display list in RAM if it's not changing. Quote Link to comment Share on other sites More sharing options...
Tempest Posted March 4, 2002 Author Share Posted March 4, 2002 Ok, I think I got it working! It works with Atari800Win, so I hope it works on a real 5200 as well. Thanks for all the help. Now I need to make sure I didn't miss a memory address I needed to update. Tempest Quote Link to comment Share on other sites More sharing options...
Nukey Shay Posted March 4, 2002 Share Posted March 4, 2002 Those pointers are correct...keeping it in rom memory is OK. In your previous post you were confusing the dlist address with the screen address (which you were starting at $1800...not $1000). Starting the screen at $1000 will keep the screen from exceeding it's 4k boundry. Quote Link to comment Share on other sites More sharing options...
Heaven/TQA Posted March 4, 2002 Share Posted March 4, 2002 http://www.s-direktnet.de/homepages/k_nadj...j/referenc.html there is ascii version of the atari reference manual... a lot of system stuff but also some notes about antic & displaylist (chapter 15) hve Quote Link to comment Share on other sites More sharing options...
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