Loop V request (was Re: A/B switch for Echoplex)

[Mark Hamburg <mark_hamburg@baymoon.com>]

Here's an idea for Loop V (or Loop IV 1.1):

Add another mode control that allows to EDPs to be connected via MIDI with
one connected to the  footswitch. The one connected to the footswitch is 
the
master. The other is the slave. That already works, but now for the twist.
The mode control changes between Master, Slave, and Stereo and controls
whether or not each Echoplex responds to foot control and feedback pedal
information.

This might be another insert mode.

    Short press in Master or Slave toggles to the other.
    Long press in Master or Slave toggles to Stereo.
    Short press in Stereo goes to Master.

I don't know what this should do with a long press in Stereo. It could go 
to
Slave, but a double-tap of the insert button seems just as easy for that. 
If
done as an insert mode, the insert LED could indicate whether or not each
Echoplex was receptive to control information.

If it worked, it could almost justify the need for two EDPs to get stereo.

Mark