Try modifying dpmi parameter in dosbox.conf. Some protected mode games don't work with dpmi=true and some don't work with dpmi=false.

Arena (from the underdogs) freezes on the character creation (map) screen. Works under DOS.

I've tried 2nd reality and unreal. Both sound great, near perfect. I think that Doom doesn't work because the ULTRASND environment variable isn't set. Format should be "ULTRASND=Port,DMA1,DMA2,IRQ1,IRQ2" (more here: http://www.deinmeister.de/gusemu/manual.htm#faq ) but I don't know which values to …

Half screen vertical (like 320x120 instead of 320x240).

There are some issues with VGA i've noticed. 1.VGA mode 11 (640x480x2) is not emulated. Game Hound of Baskerville (->the underdogs) uses this mode. And it doesn't even run properly in pure DOS on my Radeon: if I move mouse during a screen change, output becomes garbled. Dosbox (CVS) gives "unhandled …

Discworld 2 works in dosbox 0.60. Athough my version is a cracked cdrip. Didn't test it with sound.

In Raiden too. Only joystick works. And in "Alien Syndrome" left key is always on, regardless of what I do on my keyboard.

Even m1emu.mp3 provided on canadacow's page has volume problems (bass sound is much louder in m1.mp3 played on real MT-32). btw, I was unable to find ROM. It's required to get any sound from emulator, right? (even managed to get it compiled with current dosbox CVS, but exits when mt32emu is run) I'd …

It's simple. If timer interrupt is set to run every x seconds, you could adjust it to run every k*x seconds where k < 1 or k > 1. So, (interrupt based) game runs slower or faster. But to fully implement this, you should also do same modification to all emulated parts of dosbox that have internal …

Why not adding a speed factor for timers? This would enable easy speed changing for almost every game.