The image doesn't display.

Maybe even post (part of) the source code.

I can see the images.

[MOVED]

I can't and i don't see a reason to post images instead of code.

Works fine for me.
What debug is that?

Looks like the debugger from some version of MS-DOS. The CS:IP is 0703:0000 and the SS:SP is 0703:0002 when you start off... not saying that's why the instruction isn't properly stepped in this case, but having the stack pointer on top of the code being executed can't be good...

Looks like the debugger from some version of MS-DOS.

Guess it's rather far from a fullblown 3d-flightsim indeed.

But right, could be due to the bad stack setup, though i'd expect it to behave
a bit different then.

thx for your reply