chocolat2000

Hello, I've just finished the step C control panel. Everything is fine except the modulation matrix :-[ Neither the leds are lighting nor the buttons changing anything. Is there anything to do to activate the matrix ? thanks

I cannot understand, it is now working ! I un-soldered every sid and tried them alone -> perfectly working (after a re-burn of the pics) Then i resoldered them together and it works ! The only thing is that the first time i send the mios and midibox_sid prog when everything was soldered. Now i programmed them seperatly. Could this be the problem ?

I double checked the connections, it seems to be ok. I'm suspecting the alim. Because, if i solder all the sid's and core's, and if i solder the midi link between core 1 and 2 but not core 2 to 3 and 4, the sid2 loose sound. If i unsolder the alim of core 3 and 4 (without touching the midi link connection), sid2 come back to life ! I triple checked the sonnections, but everithing seems to be correctly soldered. I'm a bit despaired :(

Hello, I began building a midibox step C First, i mounted 2 cores and 2 sid modules. I liked them together, and whow, great sound ! But now, i mounted 2 other cores and 2 other sid modules, and when i link everything, i have no sound from sid 2,3 and 4 (i had sound from the sid 2 before, and i send the "link" control to the master) Very strange, when i un-link (undersand : un-solder the power of the sid 3 and 4) the sound come back to the 2th sid ! Other thing strange : when everything is soldered together, i can't say i have no sound from sid 2,3 and 4. Actually, i hear the "phantom" sound from the sid. I also hear the "chtritch" when i change preset and the phantom sound change. So the slaves sids receive some datas, but apparently not the "note on". Someone understand this ? PS: i use the optimised PSU, with a C64 power supplie

ok, it seems to be YMF 2898 and YAC516-E I only need the DAC, the YAC516 is YAC512 compatible ?

Hello I'd like to buy some cards to build a midibox FM and i found this card on ebay: http://cgi.befr.ebay.be/ws/eBayISAPI.dll?ViewItem&item=6808318179 But i'm no sure there is an opl3 on it. I guess but the denomination "16 PRO" sounds strange... Someone knows something about this card ?