I'm not sure that being PAL (or not), would affect how the roms would run as all the NTSC->PAL conversion is done by hardware bolted onto the 6847 video chip (as discussed in another thread).
About the only changes I can think of is that NTSC / PAL machines may run at slightly different clock rates, and that the timer IRQ will be 60Hz rather than 50Hz, I seem to remeber that the notes produced by PLAY are slightly different because of this. If the roms where different you would have thought they would have corrected these.
Cheers.
Phill.
Dragon 200 Roms
Re: Dragon 200 Roms
I agree. I think the Dragon 200 ROMs will be identical to the TANO ROMs.