I remember it was possible to play Settlers 2 in two-player split screen with two mice in DOS, and it seems possible to recreate in Dosbox: https://www.youtube.com/watch?v=Vfpx0siF5TU
If I remember correctly, the trick here was to not start the mouse driver (mouse.com), but let Settlers' internal mouse driver have control :)
I have no idea about two player Lemmings in DOS. I have never played it, at least.
Well, define "driver"... This was DOS, so you had to listen to interrupts to catch mouse events. It was more or less standard though, if my memory serves me correctly.
If I remember correctly, the trick here was to not start the mouse driver (mouse.com), but let Settlers' internal mouse driver have control :)
I have no idea about two player Lemmings in DOS. I have never played it, at least.