Description
This option will open MAME on multiple screens. Each screen can have it's own monitor, resolution, refesh rate, colour depth etc... This option can be fun to use on arcade games that originally had multiple screens (e.g. Darius) as you can set MAME to show each screen individually rather than one extremely wide window.
Example
mame <gamename> -numscreens 2 -w
Command Format
<gamename> -numscreens <number>. The number is between 1 and 4. The option will run a game in two windows. The same info will be on both windows. Running without the -w option really requires multiple monitors.
Try this if you have Darius installed...
mame darius -numscreens 3 -w -nobezel -nomax
What this will do is split Darius up into it's 3 screens and display them in their own window. MAME stacks the windows on top of each other so you need to sort them into order. The -nobezel will prevent artwork being loaded and the -nomax will stop MAME maximizing the window.
MAME's Default Setting
1