Hi,
I thought I'd try a TF1260 on the A1200 expansion port of the aca500plus. Unfortunately it doesn't boot, just an orange, then blue, then green screen with some numbers and an error code EXC5.
I note in the autoconfig page of the system information menu it says "aca500plus autoconfig board not found, possible cause : your system contains incompatible expressions".
Which is fair enough, only recent ACA12xx boards are officially supported.
But...
Is there any scope to update the aca500plus firmware to work with it? I'm happy to post you the TF1260 to have something to try it on.