dos emulators bug

[Jude DaShiell]

Why do dosemu and dosbox packages both fail on startup with mouse errors 
and dosemu complains about sdl?
It makes no difference if the -m switch is used on the command line with 
dosemu either, the package ignores the switch so far as I can tell.  The 
dosbox error is an error 13.  Finally it doesn't matter if I have a usb 
mouse attached to the computer and have it configured as pnp when it's a 
logitech Ifeel mouse.
Could these packages require a serial mouse, or is there an undocumented 
dependency missing from my system that needs installing?