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Hi Kev - I get an error "J Invalid I/O device, 403:1" when I start the game using a PS2 mouse. Still a very good game with a joystick.

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Thanks :) 

That's strange.  I tested it on both Cspect and the Next itself.  I also tested two mice on the Next. one was an actual ball-based ps/2 mouse, the other a usb mouse using a usb/ps2 adapter. 

What os are you running?  I have been using 2.07k (latest official distro) on both cspect and next. 

Just curious to see if can pinpoint whether its a particular os/firmware or something else... 

Thanks for the response Kev. Im running 2.07k on an N-Go with a ps2 optical mouse. Just for reference, the mouse works with Xeno brigade and Next War. They run form the .nex extension in case that makes a diference from running from .bas.

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Hmmm,  wonder if there's a difference with the N-Go and Next for that particular driver? I am using the Next mouse driver that comes with 2.07k...

It is possible those games are reading the Kempston ports and doing their own thing - I originally did that in basic (I do use it on the title screen to read the mouse button) but the mouse driver was more efficient, faster and, eh accurate 😂

Thanks for the heads up on that. 

Actually, a good test to see if its a driver thing is to load the basic demo for the mouse.  Its under the /demos/mouse folder

Ah, I wonder - are you running the game from a partitioned sd card? (ie. you have an extra drive (like D:)) 

If so, the problem is that the game assumes its running from the system drive.  I went and updated the game download here - essentially just adding the C drive letter to the file path used for the driver, so it should load the driver properly.