thanks for the replies...
...it is the gp2x f200 I've got and I hadn't even touched the cpu settings or sound frequency - something to try before I give picodrive a go...hopefuly that'll be a bit easier to get on with then.
I've only just got the gp2x and have been downloading a few emulators and games. I can open DrMD and browse to a roms folder and select a rom...this is when the problem starts...the device just emits a continuous beeeeepppppp noise and the screen's blank after I've tried to launch it - I tried a...