Screen timing switching between PENTAGON/SCORPION is easy. Emulaion of european devices is also very very easy. For example some of this features is realised in my PROFI INTERFACE in one small CPLD.

http://velesoft.speccy.cz/profi/profi-firmware-1.htm

DOCUMENTATION:
http://velesoft.speccy.cz/profi/prof...ty_techman.zip