BTW, a small bug FYI. Terra nova when attempted to be configured with gravis ultrasound attempts loading patches from the cd. It uses this batch file:

1@echo off
2D:
3cd D:\sound\gus\
4call _gravis %1 %2 %3 %4 %5 %6
5c:
6cd c:\tnova\

Trouble is, if you attempt the CDs there with dosbox you''ll get:
'Unable to change to: D:\SOUND\GUS\.'

The file is regenerated every time you setup sound.

Maybe it's a dos 6 incompatibility.

A backslash on the end of a pathspec that does not resolve to the root directory is invalid in MS-DOS 5 & 6. DOSBox 0.74 allowed it, but SVN has adopted the compatible behavior.

Dunno how it could have worked for the game developers. Is this perhaps a GoG release you're using? I recall there was another game they released with non-original batch files using trailing backslashes on paths that worked in 0.74 but not in SVN.

The original sound problem is CPU/GPU performance related, frameskip=1 'fixed' it so that's not important anymore.

It's a gog release but i reinstalled from the inbuilt cd images in frustration (and besides that particular file is generated by the original game SETUP.EXE).

I've also found out by editing that file that gus is unstable in the game engine - it crashed with :
Exit to error: INT:Inner level:Stack segment not writable.

so i'm not going to try it again. Now if only we could remap the keys... which i guess i can with the keymapper...

Mmmm the mapper file redirection seems not to work with Terra Nova keypad. Very strange.

edit: never mind i was doing this completely the wrong way around. It's not the target key i need to click in the keyboard you have to press in the inbuilt mapper, it's the other way around.