Set to TT and not STE, and try the other as default.....
its strange the Mach 32 needs to have it set to STE....on a TT
Atari TT Nova card Mach64, Lightning VME, 64MB of RAM, Mega STE 4MB, Nova mach 32 and Atari STE 4MB TOS 2.06 Netusb Ultrasatan 2, Atari Falcon CT60 512MB Netusb