[Coco] Y adapter

[Michael Brant]

This has been probably answered before but I am still fairly new to the
CoCo World.  The Y adapter is something I am curious about how it works
compared to a multipak where you have a slider switch.  i have an MPI on my
one CoCo 3 but I have a Y adapter I plan on using with my other CoCo 3 or
my CoCo 2.  Before I started I figured I would ask about its compatibility
and issues that might be related to that. I looked on the CoCopedia and saw
 no info there.
Thanks
Mike