Psion themselves no longer exist , they eventually morphed into Symbian so I don't think this has any chance , if I even knew who to email .

I hope I did not imply that you were to blame for DosBox not working . The Psion emulator was notorious for not working , even on the targeted hardware . It needed very specific hardware , and would often only work on certain DOS versions , with certain system parameters set .

The fact that Boch runs slowly is not such a problem as you might think , the original Psion Series 3a used an 8088 processor running at 8Mhz , hardly cutting edge . The main limitation I now have is the keyboard , and as I stated previously , I think this may ultimately halt any practical use of the system .

I'll keep trying as and when inspiration strikes .

Many thanks for your kind help .