Hi all!
This is a combined reply...
>] And what about the auto detect option? I asked a couple of days ago, but
>] there was no reaction, so I'll ask again:
>] Would it be a good idea to connect TRG_A to RIGHT? Using this, we could
>] make an "auto detect" option: the program would be able to see in which
>] joystick port the network connector is plugged in.
>
>This means we need another additional wire? Why not, with DIN5 we do have
>enough connections available to make it work.
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.
>By the way, I haven't seen any posting from Maarten ter Huurne lately.
>Has he dropped out ;-), have his MSXs blown a fuse (due to no ground
>connection) :-(, or is he just waiting to see what connection he must
>use?
Two reasons:
- I was working on some projects for my study (to the Dutch readers: heb
nog een paar studiepuntjes nodig)
- TUE popserver was down this weekend
But I'm still on the project!
>Or keep the MSX-es electrically separated alltogether and use opto-couplers
>to transmit the signals from MSX to MSX, like it is done in MIDI. It's less
>cheap of course, but chances for short-circuiting etc. are reduced to zero!
I think a device with opto-couplers is compatible with one that uses direct
connections. I mean, using opto-couplers doesn't change anything other than
making it safer. So anyone could decide for himself whether to use
opto-couplers or not. Am I right?
Bye,
Maarten
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