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reset causing screen roll


2 replies to this topic

#1 easmith OFFLINE  

easmith

    Chopper Commander

  • 245 posts
  • Location:Alexandria, VA

Posted Fri Feb 1, 2019 9:51 AM

I have   pretty much finished this but there is one thing I can't figure out, which is why the reset causes a screen roll and bizarre artifacts to show up ( see attached) .

 

I can add / subtract a few lines of code and the reset is clean.  I don't quite understand.  Perhaps it has to do with incorrectly executing my bank switch?

 

 

for game controls ( if interested )   

http://atariage.com/...1-or-2-players/

Attached Files


Edited by easmith, Fri Feb 1, 2019 1:08 PM.


#2 Lillapojkenpćön OFFLINE  

Lillapojkenpćön

    Chopper Commander

  • 191 posts

Posted Sun Feb 3, 2019 2:33 AM

Try jumping to the initialisation when the reset switch is pushed, and that the reset code isn't in that loop because now it keeps reseting as long as you hold the switch down



#3 Nukey Shay ONLINE  

Nukey Shay

    Sheik Yerbouti

  • 21,896 posts
  • Location:The land of Gorch

Posted Sun Feb 3, 2019 3:29 AM

Easily avoided if you can spare a bit of Ram to keep track of the switch...but you could locate the cold start routine right at the beginning of overscan (so the program is forced to draw a full frame before the game reset code is encountered again).






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