I'm testing the latest FastDoom on my IBM ThinkPad A21m. It seems to run fine but when I run FDSETUP the system locks up in DOS and crashes with an illegal operation in Windows. This ThinkPad uses a Crystal SoundFusion that utilizes a CWCDOS TSR for Soundblaster compatibility in DOS. The SoundFusion works fine in vanilla Doom and Doom 2.
AirIntake in Vogons: