Recent versions of Hatari don't seem to fully restore the state 
correctly as I'll get double bus errors or other loading errors when 
restoring.
I think it might be in the FDC emulation as if I switch it out with the 
older fdc code (from 1.8.0), there's no issues saving and restoring.
I tried this on the latest Windows Automated build as well as the stable 
2.2.1.
Easiest on games which have a lot of disk access (I tried it on Double 
Dragon and SWIV).
- Load game disk
- Save a memory snapshot during heavy loading phase
- You need to Quit and restart Hatari
- Load the save state straight away