NorthernLightX Posted June 24, 2007 Report Share Posted June 24, 2007 Hi,I can't get my SID to make sound. I'm using a PIC18F4685 with latest boatloader and MIOS, which all were loaded correctly as far as I can see. Uploading apps via MIOS studio is also going good.SID testtone app does not produce any sound. I loden SIS interconnection test and have troubles doing the test. I am using the modulationwheel in MISO studio, man what a B*atch is that. I need finetune capability to send ModWheel 0 through 14 over MIDI but the thing is so inaccurate that the first value after 0 is 5. So, couple of questions:1. Is it necessary to remove the SID for this test? (I did all the testing with a SID plugged in)2. How can I send finetuned ModWheel messages over MIDI without a physical modwheel?The reading I can get right now are the following:ModWheel 0: SID pin A0 5VModWheel 5: SID pin RES# 5VModWheel 6: SID pin D0 5VModWheel 9: SID pin D3 5VModWheel 11: SID pin D5 5VModWheel 14: SID pin CS# 0VOther ModWheel values are impossible to generate with MIOS Studio, at least for me, but CS# getting no current does not look good to me. What should I check first?Thanks, Alex. Quote Link to comment Share on other sites More sharing options...
TK. Posted June 24, 2007 Report Share Posted June 24, 2007 Hi Alex,it is not required to remove the SID for this test.MIDI-Ox provides a control panel, from where you can easily send a specific ModWheel value.Reg. ModWheel value #14: I just have noticed, that there seems to be an error in the released test application - within the SID_SetPin14 function in main.asm, SID_SR_LAT_WR is set and not cleared (therefore CS# is propably always 0).I'm sure that I fixed this months ago, but it seems that I forgot to upload the new versionBest Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
TK. Posted June 24, 2007 Report Share Posted June 24, 2007 No, I was wrong - the version is up-to-dateWR# should be 0 when ModWheel #14 is sent, it should be 5V on any other ModWheel value (see main.asm header)Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
NorthernLightX Posted June 25, 2007 Author Report Share Posted June 25, 2007 I completely read over the ModWheel 14 -> 0V part in the main.asm, how stupid of me :-[I will test the other values tonight and post the results here. Quote Link to comment Share on other sites More sharing options...
NorthernLightX Posted June 25, 2007 Author Report Share Posted June 25, 2007 OK, tests went fine. Loaded SID V2 HEX file, went fine. Still no sound :'(I connected headphones to the audio-out of the SID, is that possible or is an amplifier necessary? Quote Link to comment Share on other sites More sharing options...
TK. Posted June 25, 2007 Report Share Posted June 25, 2007 Yes, the output current is not high enough for a headphone, an amplifier is required.Did you already check the clock connection between core and SID module? The SID won't run without.Do you have a V2 or V3 core module, a V2 or V3 SID module? There are small differences, which are documented at my website!Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
NorthernLightX Posted June 25, 2007 Author Report Share Posted June 25, 2007 Hi TK,both the Core and SID are V2, but I used the old docs to interconnect them. I will try to measure the clock signal, I already insulated the connection... Should I measure any particular voltage on those pins? Tomorrow I will also connect the sid to my amp. Quote Link to comment Share on other sites More sharing options...
TK. Posted June 25, 2007 Report Share Posted June 25, 2007 The clock signal cannot be measured with a common measuring instrument (you would need a scope...), but if you want to ensure 100% that the connection is available, just unplug the PIC/SID and use your multimeter in ohmmeter mode (0 ohm between the PIC->SID pin means: connected...)Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
NorthernLightX Posted June 26, 2007 Author Report Share Posted June 26, 2007 I soldered a new plug to the audio out of the SIDboard and uploaded V2 again: it makes noise! And I don't mean digital or static noise but real SID music noise ;DOne thing though: the SID testtone app did not produce any sound, just digital noise, might that app be incompatible with the 18F4685 PIC? Quote Link to comment Share on other sites More sharing options...
TK. Posted June 26, 2007 Report Share Posted June 26, 2007 Great! :)The testtone application should work w/o compatibility problems. The second MBHP_SID module is not serviced of course, but I just changed this in the new version: http://www.ucapps.de/mios/sid_testtone_v2.zipBest Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
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