prego Posted June 4, 2016 Report Share Posted June 4, 2016 Hi everyone! I am a complete noob and I have just build my first MidBox SID (just the Core and the SID modules, without a LCD). Unfortunately I am not able to produce any sound! Could you please help me? Below are some tests/information of what I am getting while trying to debug the MidiBox: 1) In MIOS Studio 2.4.6, I get the following message ( so I think that I covered the "basics"): Operating System: MIOS8 Board: MBHP_CORE or similar Core Family: PIC18F Bootloader is up & running! 2) When I run the "mbsid interconnection test v2"application, I can confirm that all SID pins are set to the correct voltage, with the exception of pin "RES#" (always at 0V). 3) When I run the "setup_6581.hex" I receive the sysex message "f0 00 00 7e 40 00 01 f7" every 4 or 5 seconds together with a weak high pitched sound followed by silence. However, when I play my MIDI keyboard, no sound is produced. Unfortunately, I have no idea of any additional test that I could perform. If you could give me any hint or tip it would be highly appreciated! Quote Link to comment Share on other sites More sharing options...
prego Posted June 4, 2016 Author Report Share Posted June 4, 2016 Hi everyone! Just a quick update: after a good night of sleep, I found a bad joint directly connect to the RES# pin in the SID chip. After fixing this, now I am able to complete successfully the "mbsid interconnection test v2" application, and confirmed that all SID pins have the correct voltage during the test. Also, when I run the "mbsid_testtone_v3c" application I get a triangle waveform from the SID output, as expected. However, when I run the "setup_6581.hex" I get only a "click" sound and the sysex message "f0 00 00 7e 40 00 01 f7" every 4 seconds. I tried to upload the other files from the "midibox_sid_v2_044", but the behavior is always the same. Any hint or tip? Is the sysex message "f0 00 00 7e 40 00 01 f7" the expected behavior from the application "setup_6581.hex"? What does this sysex message mean? Thanks! Quote Link to comment Share on other sites More sharing options...
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