Stigmata Posted October 31, 2002 Report Share Posted October 31, 2002 Hi there!Hopefully I got 2 C64 tomorrow.(Hope its the 6581!) ;D.I already got 1 with the 8580.working fine!!!!!My first question to Thorsten:It is worth waiting for the Pic 18F and then build it??Dont want to order The pic 16f877 if the 18F system is on this side of the year.. ;DHas anyone found an pic burner for the Pic18F ???Dont want to buy the Picstarter kit (too expensive!)My second question: How can I connect them together?as one synth with diffrent Midi channel.Can I add an ltc module and get the Midi through, and then connect them in serial (MIDI) on the same Midi interface??Peace!Christoffer Quote Link to comment Share on other sites More sharing options...
Stigmata Posted October 31, 2002 Author Report Share Posted October 31, 2002 Found that the IC-prog ver 1.05 supports the PIC18F452...Do you think the JDM works now??? ???Christoffer Quote Link to comment Share on other sites More sharing options...
Stigmata Posted November 1, 2002 Author Report Share Posted November 1, 2002 Yeah!I got two 6581 today for free.!! ;DI hope they work.Christoffer Quote Link to comment Share on other sites More sharing options...
Stigmata Posted November 1, 2002 Author Report Share Posted November 1, 2002 New question about the SID..If I want an MIDI led, can I connect the LTC to the CORE?Going to order the PCB soon...Thanks Christoffer Quote Link to comment Share on other sites More sharing options...
TK. Posted November 1, 2002 Report Share Posted November 1, 2002 Hi Christoffer,my suggestion is to build at least one SID core with the PIC16F as a reference. Since the current JDM programmer possibly needs some modifications to supply the PIC18F, the ramp-up of the new design can be pretty difficult w/o electronic knowledge. Hope that it will get easier when enough experienced people tried it.LTC: it's only an electronic extension, sure it works also with the SID. You can also connect the J11:MI and J11:Vs pins of the cores w/o MIDI interface to J11:MI/J11:Vs of the core with MIDI interface together. On this way the MI pins acts as "MIDI Through". Additional amplifiers (74HC00) are not required as long as the additional cores are not stuffed with optocouplers.For a better understanding: J11:MI is the digital MIDI In which goes to the Rx pin of the PIC. It can be used to supply the Rx (digital MIDI In) pin if no optocoupler is connected, or to forward the MIDI stream which goes through the optocoupler (digital MIDI Through)J11:MO is the digital MIDI Out which comes from the Tx pin of the PIC. It can be used to chain MIDI modules (MIDI Out 1st core -> MIDI In 2nd core). This method is not supported by the SID module, because it requires an internal MIDI Merger.If you wire the MI or MO pin from one to another core, the ground pins (J11:Vs) have to be connected also.LEDs can be connected to both pins: J11:MI for MIDI In LED, J11:MO for MIDI Out LED - but they require an amplifier which can be found on the LTC module.Just try it... :)Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
Stigmata Posted November 2, 2002 Author Report Share Posted November 2, 2002 Hmmm.Think I understand......If I connect the MI serial to the MI on the second I disconnect the optocoupler on the second (and the third)CORE?How did you (Thorsten)connect the stereo SID?Think I have to try.. ;)..Christoffer Quote Link to comment Share on other sites More sharing options...
TK. Posted November 2, 2002 Report Share Posted November 2, 2002 Hi Christoffer,yes, thats correct. :)I realized it on the same way on the first days. Later I built my SIDs into two seperate boxes, so that I'm able to lend one to friends and to use the other for my daily pleasure :DA particular variation is the way I realized the MIDI In - it comes with an integrated MIDI Thru on the outer pins, also know as "Extended MIDI In" (Atari ST). Here a schematic:http://www.ucapps.de/midibox_sid/mbsid_stereo_midi.pdfBest Regards, Thorsten.P.S.: I song I made with those two SIDs can be found under http://mp3.de/frequencies (Lovesong for my SIDs ;-)) Quote Link to comment Share on other sites More sharing options...
Stigmata Posted November 3, 2002 Author Report Share Posted November 3, 2002 Ok I will try that.Is the Extended MIDI In and the MIDI thru on the outerpins an common thing on all MIDI interfaces?The picture on your SIDs you have only the 15V input.Isnt 15V too much for the CORE?Or did you hide the 7V on the back?? ;)Christoffer Quote Link to comment Share on other sites More sharing options...
TK. Posted November 4, 2002 Report Share Posted November 4, 2002 Hi Christoffer,no, the extended MIDI In is not standardized, but it's usefull :) I only know it from the Atari ST.The 15V input is ok for both modules - since no LCD, no pots and no LEDs are connected to the core module, the 7805 will not get too hot like on common applications. Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
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