OldGuru Posted February 4, 2002 Share Posted February 4, 2002 Has anybody used the feature to remove the automatic ATRACT mode? I need it disabled as the gameplay becomes longer and longer... I've been looking into the BIOS code, and it seems to me that if the main loop ensures that the value in the ATRACT address ($04) is positive ( >=0 ) this mode will be disabled. Based on that, I set address $04 each and every VBI to $01 until the game is over... It seems to work as expected but I'm not sure that this is the way it was supposed to be done... Any idea? Thanks, OldGuru. Quote Link to comment Share on other sites More sharing options...
calamari Posted February 5, 2002 Share Posted February 5, 2002 The way I read it, this value is incremented, and when it reaches $7F or $80, the attract mode turns on. What I've done is set it back to $00 and everything seems okay.. this seems to work on both emulators (Atari800 dos, & VSS), but I haven't tried on the real thing. BTW, instead of setting it every vblank, maybe just reset it when there is joystick/button movement, that way it can still work as intended. calamari Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.