OK, I have put together the core and sid modules and linked them together, used my JDM to program the PIC successfully over a com port. Â I am now having trouble with the MIDI communication. Â I have tested the supply voltages and opto (in circuit), tried all polarities of MIDI wiring with no luck, and having put a LED over the MIDI out (J13), between MIDI+ and MIDI-, it does not light, can anyone give me any guidance as to what this may signify?
Cheers ;D
Huw
If possible, disconnect the SID module. Try to test the core by itself and get it working first. You don’t have to have the SID connected to test the core.
So you’ve programmed the PIC with the bootstrap loader, and you have the Midi out of the core going to the midi in on your computer - do you get anything at all in MidiOx?
Justin
yes ive programmed the PIC, i actually put MIOS onto the chip using the JDM, I think you may be right that disconnecting the SID module must be my next step, will try that later and have another go at it
yes ive programmed the PIC, i actually put MIOS onto the chip using the JDM, I think you may be right that disconnecting the SID module must be my next step, will try that later and have another go at it
You could also try burnin’ bootstrap loader to pic as it’s supposed, and uploadin’ MIOS using midi?! Sorry, just a guess..
Bye ya, Moebius
yeh, the trouble is that i cant get any midi activity, in or out of the core module ???
After burning bootstrap loader, that is?
the bootstrap was pre-loaded onto the PIC
Do you think it’s still there, after
“i actually put MIOS onto the chip using the JDM”
??
ok, i have erased the pic and just put the bootstrap back onto it and verified it as fine, checked all the solder joints and im going to power it up again in a minute!*fingers crossed*
;D we have lift off! thanks! 8) MIDI I/O working fine now!
should i be worried about how excited i am!?
Great 
Your excitement is a good sign - but don’t let it be an obstacle for readin’ documentation.. ;D
Bye, Moebius