Hi, I have an unenhanced (I think) IIe with ram problems.
Booting with Closed Apple key pressed only shows "RAM:".
Shouldn't it display some numbers after RAM?
Using the monitor to test ram it seems that only addresses ending in 8C or CC are affected.
With further testing it seems that the high bit can't decide if it wants to be 0 or 1.
On a II or II+ I would just replace the ram ICs (because they are in sockets) until I found the one that causes problems.
Unfortunately on this IIe they are soldered directly to the main board.
So before I go crazy with soldering, which ram ic corresponds to the high bit?
And could it be something else (besides ram ic) that affects the data/address bus?
Thanks for any insights you can provide.