Hello,
So I persisted in this direction, here is what results.
I took your notes into account, it may be able to meet your requirements too.
I designed a DIP40 PCB with the necessary MIOS32 features on board. The dipCoreF4.
It matches the main functions and pins of a MIOS8 PIC, I think I will try to put it in my SammichSID change the LCD for an ssd1322 and see what happens ;)
It also fully matches the MIOS32 ports and features with some slightly changes. It's a very small Core you can put everywhere easily.
I designed the mbhp which comes with it. The dipBoardF4.
Size is 65x46mm.
It is compatible with Andy's wCore USB and RES-SD modules.
Check the dokuwiki pages and tell me if you want to try it.
For the name, I'm still hesitating with dipCoreF4 ?!
Best
Bruno