DivMMC Future board, which I have been tweaking the design of to make it work with all the different versions of the Spectrum.
zx.zigg.net). That confirmed the lower 16K RAM was fine, but there was a fault (or rather several faults) in the upper 32K RAM.
DivMMC future, it did that automatically, no dip switches or jumpers, only the menu and reset buttons.
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