Ah, I already found it...
----
:What I mean is connecting TRG_A to RIGHT inside the DB9 connector. A simple
:feedback loop. It doesn't require an extra wire in the cable.
:The idea is that an MSX toggles TRG_A a couple of times and then reads
:RIGHT to see if it reports exactly the same state (0/1). If it does, a
:joystick network device is connected to that port.
:These signals are also sent across the network, but if we make the protocol
:such that every transfer starts with a signal from TRG_B, this is not a
:problem.
----
Hmmm... That is an idea. But it makes the thingie a bit more complicated.
When the connector is only connected to one computer, then this computer
would detect that that the connector is connected but it still has to test
if there are other computers around. And this results in 'no'.
Since a non-connected computer won't give response, and a non-connected
cable won't give a response either, this extra wire inside the connector
isn't really nessacary. So why do this while it limits the possibilities? (a
transfer can't start with TRG_A anymore). To cut everything short, this has
no use.
~Grauw
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