Quote:
Originally Posted by Timbucus
OK I tried 47pF caps (fitted more neatly on the top as I had tried one of them on A10) on A8,9 and 10 and I also seem to be able to run all software with no observable errors, and despite two cups and four biscuits no reverse C. Reassuringly switching back in the 10K pullup on NWDS and the corruption re-appears. This works both with and without the RAM expansion.
I don't have 3off of anything lower and as they were fiddly to fit I think they will be staying.
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I think 47pF sounds much more reasonable than 100pF on the high address lines.
Just wanted to clarify.
You have 47 pF only on A8, A9 and A10, nothing on A11.
Do you have 4.7k on NWDS?