As you would expect from something with a standard BIOS I had no problems running Tiny Core 7.2 from a pen drive.
Out of interest I then fitted an 8GB SSD and installed Tiny Core 7.2 to that. I then proceeded to compile the Tiny Core kernel on the D-class machine - something I'd done previously on the Z-class hardware.
Z90D D10DP real 43m 23.11s 49m 16.16s user 41m 21.27s 46m 56.87s sys 1m 46.47s 2m 03.65s
So, as one would expect from the different clock rates (1.65GHz vs 1.4GHz), the Z-class is a little faster than the D-class!
Any comments? email me. Added March 2017