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MIDI Merger Box schematic?
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André Oliveira
Apr 24, 1996, 3:00:00 AM4/24/96
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I want to build a simple 2 in - 1out MIDI merger box.
Does it require a circuit board or do I only have to solder the cables
in the right pin of the sockets?
I wonder if it is too complicated to build. If it is, I should buy an
already made MIDI merger, instead. What do you think?
Please, help me!
Does it require a circuit board or do I only have to solder the cables
in the right pin of the sockets?
I wonder if it is too complicated to build. If it is, I should buy an
already made MIDI merger, instead. What do you think?
Please, help me!
Andre
Ed Mulligan
Apr 25, 1996, 3:00:00 AM4/25/96
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In article <4lm9i2$k...@vivaldi.telepac.pt> andre...@mail.telepac.pt
Andre,
It's more complicated than just a hardware merge. MIDI messages are one to
three bytes long and the merge unit must ensure that a message from one
input port does not get mixed with the message from the other port. Thus
each port needs a small buffer and the whole unit will need to schedule
the merge.
It's more complicated than just a hardware merge. MIDI messages are one to
three bytes long and the merge unit must ensure that a message from one
input port does not get mixed with the message from the other port. Thus
each port needs a small buffer and the whole unit will need to schedule
the merge.
It gets even more complicated if you want to merge system exclusive
messages, because these can get very long (several hundred bytes is not
uncommon).
My advice is, if you are using a computer, get a MIDI interface with two
inputs, or buy a stand alone midi merge box.
Regards,
Ed Mulligan
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