NeurDis Posted February 27, 2007 Report Share Posted February 27, 2007 First I'd like to say hi to all the folks on this forum. You've all been really helpful so far, and up until now I haven't even had to post a question! :) I'm working on a SID right now and am at the stage where it's time to connect the SID and the Core. I'm using the kits from SmashTV, and it seems that they are a little different than the one on the http://www.ucapps.de/mbhp/mbhp_4xsid_c64_psu_optimized.pdf schematic. At leas they seem to have a couple of different labels on the pins. Which pins am I supposed to connect? Also, I'm using two separate power supplies (I don't have the original c64 PSU :-[ ) Does that change the way the two boards are connected? I apologize if this has already been addressed on the site, but I was unable to find it. Thanks for your help. Quote Link to comment Share on other sites More sharing options...
Wilba Posted February 27, 2007 Report Share Posted February 27, 2007 Assuming they are latest revisions of the boards, I think they should be connected with ribbon cable and 10 pin IDC connectors. This will also supply 5v/Ground to the SID PCB, unlike the C64 PSU Optimized diagram, which uses separate power supply wiring to minimise noise. Quote Link to comment Share on other sites More sharing options...
NeurDis Posted February 27, 2007 Author Report Share Posted February 27, 2007 Ok, so does that mean the each pin connects directly to the one with the same name on the other module? do all of the pins get connected? My main point of confusion is that some of the pins aren't labeled, and from what I remember (sorry, I'm at work right now so i don't have it in front of me) there wasn't a pin labeled MD on both modules. So when the core is powered, and the pins are connected correctly, he SID gets the correct power without a second power supply?Thanks for the info, this has been a huge help! Quote Link to comment Share on other sites More sharing options...
Wilba Posted February 27, 2007 Report Share Posted February 27, 2007 They don't all match name for name, that's the confusing bit!The pins to connect will be in the same position on those 2x5 headers.I'll break it down here and you can wikify it!Core:J10 SID:J2Vd VcVs VsCLK CLKSC --MU MURC RCMD SCSO SO-- ---- --[/code]The reason this is confusing is because "Vc" (Vcc) on the SID chip is the 5v supply, Vdd on the SID chip is the 12v or 9v supply. You're connecting the "Vd" 5v supply of the Core to the "Vc" 5v supply on the SID module.The other change was that the SID module used to use the same serial clock (SC) as the Core's SC, which was also used for the DIN/DOUT. But then there was a change so that the DIN/DOUT exclusively uses that serial clock, so MD was used instead for the serial clock on the SID module. This is why MD on the Core connects to SC on the SID module.So you still need two power supplies, one for the 12v or 9v power to the SID chip, and the other to power the Core (and indirectly the SID chip) with 5v. This is why a lot of people choose to use the C64 PSU as it outputs 9v AC and "regulated" 5v DC with a single transformer/power plug. Quote Link to comment Share on other sites More sharing options...
NeurDis Posted February 28, 2007 Author Report Share Posted February 28, 2007 Perfect, that is exactly what I needed! Thanks a bunch. :) Quote Link to comment Share on other sites More sharing options...
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