The MISTer port of plus_too has implemented various fixes for the core which would be nice to also have in the MIST version.

https://github.com/MiSTer-devel/MacPlus_MiSTer/commits/master

Hi @gyurco
I am very sorry as I am using issues in an unintended way.

Lode Runner has missing all sound FX (e.g. Lasers) in the port from this core to Mister.

Does this work on Mist port?
I don't have a Mist to test it.

I just wonder if Mister misses the feature or it's an issue related to timings.

Would it be possible to repurpose the two DB9 ports to work as RS422 serial connections to let the PlusToo core access external devices like serially attached printers? As classic Mac's don't have gameports this would'nt result in loss of hardware functionality.

I've just ported this core to TC64, and noticed when using the Mac Plus ROM from https://github.com/ManuFerHi/SiDi-FPGA/tree/master/Cores/Computer/Plus_too that the up-arrow key on the keyboard produces a "+" instead of moving the cursor.

I don't know if this is due to the ROM, the OS revision (I'm using a set of System 6.0.8 800k disk images found on Archive.org and installed to an HD image) or whether it's a bug in the core's kerboard mapping.

It's really hard to find definitive information on pre-ADB keyboards, but a study of historic MESS sources leads me to believe the scancode should be 9'h11b, not 9'10b - and making this change does indeed seem to fix it - see the commit at
robinsonb5@aa3bf93

I haven't created a PR simply because I'm not confident this is correct and there isn't some other cause for the apparent scancode mismatch.