Comments (2)
What should be fixed is the following:
- The d0-d15 labels at CONN1 should be renamed according to the corresponding DRD0-15 pin they connect to (the latter is correct).
- The de-scrambling of the lines won't be very significant per se, but it will swap the upper 8 data bits with the lower 8 bits, which means that the BCASL1 and BCASU1 lines must also be swapped, as they are crossed at the moment.
This is a lot of work and, since the two mistakes compensate for each other and the current board works wonderfully as-is, it is left as an exercise for the reader. 6c7c698 adds a note to the README pointing to this issue so that everyone is aware of it.
from openamiga600ramexpansion.
You are definitely right, data lines and address lines are numbered incorrectly. I probably followed some random connector pinout I found online, but can't remember which one. For some reason I also crossed UCAS and LCAS, which luckily allows the expansion to work.
Thanks for the heads up, I will add a pointer to this issue in the docs.
from openamiga600ramexpansion.
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