Problems with MCV-1

[jbv]

OK, here we go.

The main problem in the MCV-1 schematic is the way the HC573 is hooked
to the 8031.
Here are the correct connections :

    - pin 32 to 39 of the 8031 should be connected to pin 9 to 2 of the
HC573

    - pin 1 of the HC573 should be connected to ground.

Another thing I spotted is some mistakes in naming various in/out pins
of port 3 in the 8031,
such as RD, WR, RxD & TxD. I mean : for that matter (midi in & out), the
schem is right,
but those mistakes increase confusion nevertheless.

jbv