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Screen artifacts while playing gobman

 
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gavros777
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Joined: 10 Mar 2014
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PostPosted: Thu Sep 24, 2015 12:17 pm     Post subject: Screen artifacts while playing gobman Reply with quote

I love that game but every 5 to 10 minutes it will get covered in graphical artifacts making me unable to play it.
Can someone inform me what i need to do?
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MrFlibble
Demoniac Demo maniac
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Joined: 05 Dec 2010
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PostPosted: Thu Sep 24, 2015 12:38 pm     Post subject: Reply with quote

Well, the first question to you would obviously be, what do you use to run the game? DOSBox? DOS on original hardware? In a virtual machine?
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gavros777
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PostPosted: Thu Sep 24, 2015 12:47 pm     Post subject: Reply with quote

Hello, i'm using dosbox 0.74
Another problem i noticed sometimes the police ghosts disappear from their box and only the red ghost is out and running. It's another glitch that gets only solved by restarting the whole game.
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Quadko
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Joined: 24 Jun 2011
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PostPosted: Thu Sep 24, 2015 4:20 pm     Post subject: Reply with quote

Sounds like a game bug, but maybe affected by DosBox setup. Are you comfortable editing the dosbox.config? Docs: http://www.dosbox.com/wiki/Dosbox.conf

Generic options to try:

  • Turn sound off in the game, if you can. That's a common cause of game bugs in DosBox. (Other tweaks may let you turn sound back on even if this fixes things. Good to know if this helps.)
  • Turn off sound emulation in dosbox
  • Switch cputype - try options like 386_slow
  • Slow DosBox cycles down (try 7800) - maybe it's just running too quickly and causing trouble? Games often count during idle time, and if it wraps the counter variable bad things can happen.
  • Switch core to normal or try other options.
  • Switch machine type (video card) from default to svga_paradise, etc. Try some different ones


I don't know if these will help with GobMan, but that's where I'd start.

And MobyGames says it's a 1992 VGA game, so that's late 286, mid 386, early 486 territory; CPUs running around 33mhz as I recall, which internet says should be around cyles=fixed 7800 speed, if you need a place to start. Faster than that is more than the game was designed for or tested with, probably!
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