Ok, next time i'll perform due diligence.
Reading on down into the "megamamece and the HP Jornada 568" thread, I see that the MEGA version may not yet be updated for the 568 and that is what I have been trying.
Looks like I'll get the regular version and see how it goes.
> I have installed the 9.1 ARM cab on my HP568, since it uses the ARM chip. It
> seems to run ok, but when I load a ROM, strange things happen. I can get to the
> 'demo' mode in, say, Gorf, but I cannot emulate a coin insert, 1Player select,
> game start, game exit, etc. via the front panel buttons. Do I have to remap
> these guys? If so, to what?