RAM fault rabbit hole

[gbejniet]

Hi @jobdone, I just mean that I have to press F2 more than once sometimes to get to Basic. This is probably just because of the keyboard reading fault. Minerva is booting 128K ok, I mentioned the 64K thing to illustrate that while I was working through the bad upper ram I didn't have this issue with the keyboard, so it's a recent (iatrogenic ) thing I believe.

[M68008]

It could be the ZX8302