Comments (1)
I guess the culprit here is the NOR-based S/R latches in your homemade D-latch that is a part of the '4511. They tend to be a bit evil and oscillate in simulations - and if the enable-pulse to them is too short they always go into oscillation.
There's a new pre-release of Digital that has a feature that makes oscillations die down by themselves. See discussion #1230 for a link to the download.
from digital.
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from digital.