Yes that's fine.  I can't complain can I, you wrote it for me in your own time!!  :)  

Ultimately I intend to use it as a template and recompile it.  That's where I'll go next.

It's main purpose for me is to hook up these JeSTs when the PCBs arrive.  At the moment with PeST, I use sysinfo which recognises right clicks and brings up the help menu.

I'll likely put a counter in there too, hooked up to the clock timer, which counts how fast the autofire is running.  Then there will be another which counts how fast the left right left right (joystick waggling) is running.  I can go upto about 50-times a second, but if the ST falls over at 20-times a second..  The mouse for example will go all over the place if you clock it too fast.  Just to pull out as much conceivable information about the port.  But that's for another day when I have all of these other jobs out of the way.

:)