mF_freak Posted June 17, 2003 Report Share Posted June 17, 2003 are you back from holidays Thorsten? ;) Quote Link to comment Share on other sites More sharing options...
pay_c Posted June 24, 2003 Report Share Posted June 24, 2003 Hey TK, again because of that Analog IN: Tried it on the second SID I built. Still the same: Really not very loud. Hardly hear it.... ... Whats up? I dont get it... Quote Link to comment Share on other sites More sharing options...
nebula Posted July 8, 2003 Report Share Posted July 8, 2003 I have decided not to finish the single 4-SID PCB I had started laying out. Thanks for all your help anyway Thorsten, and the answers are still very insightful.Instead I think I will simply etch all of the layouts required on to one big PCB and just connect them that way.My reasoning? Well, I decided that if I start to change things around too much then I risk losing long-term compatibility with future advancements to the project / platform. For example Thorsten's new suggested power supply wiring seems very solid, and if I had created the big board such a modification would be very inconvenient. Also Thorsten recently made mention of possible panning using a forthcoming "AOUT" module, and my design may have omitted a port to plug such a module in on.I was initially worried that 4 cores and 4 SID modules would be an unmanageably large set of boards, but as has been demonstrated, with a little coaxing they will fit into a C64 case. So there really is no need to try to reduce the component count or increase the efficiency of the layout.I do have one other little tidbit of info though: my work uses a PCB layout program called "Protel 99SE", which I decided I would try to learn for this little project. I don't know what other PCB/schematic software is like for Windoze, but I have decided (based on my weekend's experience) that Protel ranks pretty high on the stink-o-meter. Part of my decision to stop working on the board is based on about 10 hours of frustration working with this crappy pcb software. (FWIW it seems powerful but has a ridiculous user interface) Quote Link to comment Share on other sites More sharing options...
DriftZ Posted March 31, 2004 Report Share Posted March 31, 2004 Nebula: Should be able to take the 1 MHz clock from one core module and split it between all 4 SIDs, eliminating 4 x 1 MHz oscillators, TK: this doesn't really make a difference, but it's ok. Note that neither the master, nor the slaves are exactly synchronized. I've got some more questions on this topic,1) Does every slave-CORE send out this 1MHz clock or only the master ? IOW can each SID have the clock from its own CORE or does it have to come from only the master ?2) On the slave PIC's, is it OK/better to connect all unused pins to gnd or can/must they be left unconnected ?tnx Quote Link to comment Share on other sites More sharing options...
TK. Posted April 1, 2004 Author Report Share Posted April 1, 2004 Hi,every SID core module drives a 1 MHz clock, so I think it's better to use them seperately. In fact a SID slave is a totally independent synth module which could also be used standalone. A master is nothing else than a slave + the control surface with the capability to send parameters to up to 4 slaves...You could connect the analog pins (J5) to ground, but in fact this doesn't make a big difference so long as the AIN driver of MIOS is disabled. Don't forget the pull-up resistors! Don't connect the remaining free pins (e.g. the LCD port) to ground or +5V!Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
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