Just in case anyone notices – I’ve just released a new version of the digital simulator. This one attempts to automatically fix wires that appear to be connected the wrong way round (in this simulator wires have a direction, and go from outputs to inputs, and get unhappy if they are connected the wrong way round). That really shouldn’t have been hard to do, but it took days… anyway, it’s done now.
There are a few other minor changes as well, but nothing that should affect the operation. If anyone notices it doing anything odd, please let me know.