PCB layout's:
file PCB_Midi_2_LPT_bug.gif:
	produced 14,04,2019: this PCB has a bug in the wiring of the
        flatcable connector. We used this PCB anyway, but had to fix the
        faults with some tricky external wiring.
        The input port has the same problem. Not fixed, as we do not need
        it for HEX
	PCB dated on copperside:10.04.2019

file PCB_Midi_2_LPT.gif:
        this is a corrected version. Not yet produced.
        The input port now has all databits in opposite order.
        If ever we use this, it should be taken into account in the
        PIC firmware.