Has anyone seen an issue on A1200 when the mouse pointer goes AWOL? Both buttons work, pointer moves, but it's not there - or in other words invisible. Sometimes I see a pointer shadow as garbage artifact moving in a column on the left side - SOMETIMES - but mostly it's just missing..
So I assume it's something to do with drawing and updating the hw. sprite, as opposed to mouse control. Could swap out LISA thought first check in if someone has seen it and maybe some TTL component fault could cause this. The board is super clean (no corrosion).
This behavior is consistent, same in even early startup with nothing plugged in but video and mouse.
Driving me nuts..
I have the same problem on an old A4000d. Started with the timer clock on the pointer melting and vanishing as I hovered over various characters on screen. Trouble is I have so much problem with this 4000 with badly seated memory simms I just have to replace the motherboard. The mobo is shot and needs replacing. No help... just that I would be replacing the motherboard on the 1200 with so little seated.
Have you checked continuity across all your tracks
Bit of nonsense... Playing certain games like Balance of Power designed for the 1000 on the A1200 renders the pointer invisible. Just a thought but use a degrader and run the 1200 in 1.3 mode and see if the pointer is there. Also disable CPU caches on boot and see if that helps. Just try anything ... seriously. Not kicking the thing... that would be bad.
