Star Raiders 2-23-83

This is the only PAL 5200 Star Raiders prototype known to exist.  The code is exactly the same as the NTSC version with one exception.  In the code there is a variable set to successfully pass an NTSC/PAL cartridge check which was to be introduced with PAL 5200s in an attempt to block NTSC games from running on PAL systems.  This check (introduced with the 2 port BIOS) would only be triggered on a PAL 5200 which was never released and can only be seen if running in an emulator.