change output= to something different

I have tried all of the following for output. They have no effect. Still stuck at 16:9 ratio surface, overlay, opengl (default), openglnb

Try some mode13 game (regular 256 colour vga) like indy4 and choose
aspect=true, which should give a 320x240 (or scaled up) resolution.
If that works, and aspect=false doesn't, your gfx card/driver doesn't
hardware-scale the output.

Thanks this seems to have given me fullscreen 4.3 ratio in almost all my games.
I would think it odd that none of my macs support hardware=scale.
Dos box acts this way even on my intel Imac with a nvidia card in it.

on another note scaling works perfectly on znes on all my macs.
This is a bit odd.

Well "scaling" can be pretty much, what your gfx card has to do for the
dosbox defaults/output not surface is hardware scaling a non-usual resolution,
that is 640x400. The aspect=true turns that into a 640x480 which seemingly
works better for your system, though it requires software "scaling" (y-direction).