dneez

Success! It seems I really messed up PIC. After replacing it and some debugging I now have 99.9% working MidiBox. Have to replace one multiplexer before it is 100% :)

I connect core via gameport. Till yesterday I was able to upload apps. Then I connected both DIN modules and soldered encoders. After that my MB has started to behave strangely. I thought it was core not configured. But when I tried to upload new main.hex, i wasn't able. I disconnected DINs and still no luck. Done troubleshooting excluding steps involving optocoupler, as I do not have it connected, as I use 1:1 gameport connection. Shortening pins on game port connector works. Shortening RX TX pins works. Cable is OK. I do recieve upload request after start up. Could it be that I fried some portion of PIC? Is there a way to check it? EDIT: One more thing I noticed, when i disconnect power I get one or combination of following. 00000AE8 10 -- FE -- -- -- --- Active Sensing 000023B6 10 -- FC -- -- -- --- Stop 000023B8 10 -- FF -- -- -- --- System Reset 000449BE 10 -- F8 -- -- -- --- Timing Clock Is it normal?

Resoldered LCD to core, now works OK.

Thanks! I tried shorting pins on Audigy with no luck. But i got everything working using onboard soundcard. Now i got another problem. When playing with core and DIN modules, I accidentially put one of the DIN modules on some metal bridges. I think it shortened something. After that i got following problems: + LCD is not working, when DIN is connected. + When DIN is not connected, I get wrong symbols on display. Could it be because of some burnt resistor or other component? EDIT: When left alone with no power for some time (quite long time), CORE boots normally displaying normal text, READY, not RAA@Q

Hi, Started building BOX not long ago. Ordered parts, and even soldered CORE and both DIN modules. The question is - How to make core work over Gameport? I sure tried mbhp_midi_gameport.gif. I just don't see anything in MIDI-OX. I also did Midi troubleshooting step by step. + Crystal in place + Jumpers too + Checked for bad soldering ten times + Voltages OK + Ground OK + Didn't check polarity of Midi plugs, because i want to connect to gameport, and didn't use midi plugs + Diod is OK + Resistors OK + LED connected to MIDI out flickers + Checked MIDI-OX config Still no upload request in MIDI-OX. My soundcard is Audigy 2, not premium so i haven't got midi I/O connectors. Only alternative is gameport. I soldered my cable using mbhp_midi_gameport.gif. Connected it to core via J11. Unplugged 6N138. Replaced R6 with 100k. The other end of cable goes straight to gameport connector. Where could be the problem? P.S. Big thanks to TK and to whole community. And greets from Estonia :)

8 bit