Juel

Arrived! Lovely ;) Also the GM5 chips have been shipped today. Perfect timing :)

Usually children are always grounded in one way or another: Saliva at younger ages snot in kindergarten age pranks in elementary school and finally unnameized smoking / beerdrinking when they are in their teens. ;)

The late British monetary system is quite nice. http://en.wikipedia.org/wiki/%C2%A3sd

That's good to know. Never heard about mil before, but I had a hard time finding a casing for a 8.800x1.925 meter board ;). I wonder what the HC18/U footprint of the crystal means. I can only find HC49/4H in my regular shops.

That was the golf accident, but it didn't include rook, ear or ball. edit: Just removed some stuff that had 30 days archiving period ;).

I'm not really sure. Could have been when I listened to my brother playing drums as well. Btw you don't think this thread is getting out of hand. Just asking since you are the moderator.

I lost my sense of rhythm in an unfortunate chess accident, but I will just wave a bit then, maybe even stomp a foot.

[me=Juel]does not know the "it's working" dance, but he was smiling all day and felt rather confident until he hurt his fingers with a screwdriver while fixing a broken fan.[/me] FYI that fan is still broken and will forever be. >:( (Not smashed (no hidden anger), but surely disabled. It is also going to be sent back to my "supplier" for further processing. ;)) About the scope: It is old (1978) and bad so you can't make any serious measurments with it, but it is a great compliment to a dmm (and FREE :)). In fact I suspected a bad soldering or something until I saw the waveform. Also I could trace the signal backwards and I was suspecting the PIC in the end, since the output was quite meager. But I am not sure I would ever have tried to upload the mios again without you guys. :) :) :) Also I updated my second topic, but I don't know how to change the name to "Solved: ..." Thanks Juel

Update As you can see in my other mbfm topic (Strange output from mbfm) it is now working. :) :) :) The problem was a bad mios upload. So probably both OPL3:s were ok (since switching them gave exactly the same error). So I guess the YMF:s can take quite a punch before breaking (don't know about any long term effect though). Again Thanks Juel

Working!!!! :) :) :) (But noisy, almost like my sidstation.) I guess it must have been the mios after all. A bit strange since I know I would have seen any upload errors. And that the OPL3 module could have inflicted on the upload also seems strange, especially since I am quite sure that it was not connected at that time. So after all you were right and it was a software problem. Thanks a lot everyone. Also a great thanks to my supplier Linneberga (the junkyard). I think you can guess where I found my oscilloscope ;), in original box, with manuals. I don't think it was even used once. Thanks again Juel

All information I have given is dedicated to you, since I have noticed that you usually remark on that ;). But then it turned out that you haven't read it all anyway :o. (TK seems to think it is enough though.) Well actually it is not true, since I am a mathematician and know exactly what you mean in your troubleshooting guide. If you understand the problem it is already solved. So you need all the info you can get. edit: The info is also useful for other troubleshooters. Ok, back to the topic. I haven't tested the mbfm app yet (currently out of electricity because of some maintenance work). But before that I tested the freshly uploaded mios and testtone, and the result was different. Apart from RC4 (RS) being 5V now also RC5 (WR) and RB5 (D5) were 5V (the others still 0V). I am not sure what effects this will have but I am moving on to mbfm test and then soldering the OPL3 again. Since I have changed between testtone, interconnction and mbfm apps several times it seems that it could be the mios upload that was corrupted (I don't recall any error messages though), or it could be that I uploaded with the OPL3 attached before. Still both of the cases seems strange. I'll be back when I have tested mbfm with and without OPL3. PS. Your info was great TK :). Especially about the testtone app. DS.

I use it with both smart mode and wait for request. I have now uploaded mios (1.9f) and testtone(1.1d or something). The full logs can be found here: mios http://juel.homeip.net/midibox/mios/hex_file_upload_window.txt http://juel.homeip.net/midibox/mios/midi_monitor_in.txt http://juel.homeip.net/midibox/mios/midi_monitor_out.txt testtone http://juel.homeip.net/midibox/testtone/hex_file_upload_window.txt http://juel.homeip.net/midibox/testtone/midi_monitor_in.txt http://juel.homeip.net/midibox/testtone/midi_monitor_out.txt The only thing to remark is the timestamp [unknown] in the output. I don't know but could it be that there is no midiclock present? I haven't measured the outputs after I uploaded and I haven't got time to do it now so I will tell you tomorrow.

That is what I am using. Even without reading the posts ;) But I can add that I have some problem with running midiox and MIOS studio at the same time. Maybe I have routed wrong with midi yoke, but I don't care at the moment. It works fine when midiox is not running.

But I have desoldered the OPL3 module now so I will test again without it. Last time I only did uploads and it worked well with midi sending in both directions. I also checked with midiox that it was responding during upload. Are there any other miditests I could do? Also I tested the interconnections without the OPL-module, but the result was the same (except for perhaps a little less noise, 1-5 mV or something) +5V on RC4 (which should connect to IC#) and 0V on the rest. So it could help if someone know it the PIC sends data continously or just once during the testtone program. Finally it is only a minimal setup so I have neither LCD or LED:s. I want to get the synth working and try it out before I buy the expensive parts for the CS. Correction: The -5V mentioned above was false, I forgot to switch the scope to DC mode so the offset was wrong. Sorry

Both soundcards where salvaged from the junkyard, and both where inside computerchassis. Also I never use the junkyard as a source when it has been raining in the last week, except for when I found a commodore 128. That one I found while it was raining, but it worked perfectly after 10 restarts (old hardware is amazing, almost like a rusty old mechanic machine). Actually the only thing i found and tested that didn't work was a SCSI harddrive that I took from a pc and used in my amiga. It developed a read/write error quite quickly. Regarding the chips it seems strange that both produce exactly the same result, which seems to indicate that either both are working or they have the same error. Regarding the second question I am not really sure what you mean, but I have followed the signal path backwards several times with both chips. I'm not sure if I tested the core module alone, but at least I didn't test it with my oscilloscope so I will desolder it asap and come back with info.