Do I realy need the opto copler on the midi in input?
yes of course by single core!
but when I have more cores in a link - in a whole circuit
whats then, do I need it or not?
A other question more!
You have seen the pdf file for midi tv for the minimum stuffed core?- Is this the minimum need for a core
for example I can use for the slave sids (of course with integratet J10 with its resistors and so on)
That would be interesting for me becouse I will draw some in eagle- so I must not soldering days weeks and so on-yep
I´m happy for all answers