Amanita Posted April 11, 2010 Report Share Posted April 11, 2010 Hi Is there a test circuit that i can breadboard in order to test the SIDs i have pulled? I am waiting for PCBs to be delivered, but it would be good to be able to verify the condition of the chips i have. Cheers A Quote Link to comment Share on other sites More sharing options...
Flemming Posted April 11, 2010 Report Share Posted April 11, 2010 Ofcourse you can always just test them in a C64.. if you got one - if you pulled the SIDs yourself chances are that you have a working C64 which could be used to test SIDs with. Try playing some hefty SID-files (Hubbard or the likes) that you know already, and you will quickly discover if it does not sound as it should. Just be aware of the 9V/12V difference in SID and C64 ofcourse, so you won't blow any of your delicious chips. Also, the 6581 won't play mixed waveforms so be sure to find SID-files that are compatible with both chips, or the 6581s will sound dead at times. But it's a cheap and easy test, i did it myself a few times, and actually i only found 6581s with errors. The 8580s and 6582s i tried never had a problem at all. Quote Link to comment Share on other sites More sharing options...
Amanita Posted April 11, 2010 Author Report Share Posted April 11, 2010 Hi - thanks for that. The C64's i've acquired all have reported problems - i've basically bought up machines for spares. A mix of chips has resulted so far - 3 x 6581 (1983 vintage) and 2 x 8580 (1989 and 1990). 2 more machines on the way. The PCBs i'm waiting for are for the MB6582. I guess i could get the SID module and PIC Core up and running more quickly than i'm realistically going to build the MB6582 - maybe thats the way forward (if i'm understanding things right). A Quote Link to comment Share on other sites More sharing options...
nILS Posted April 11, 2010 Report Share Posted April 11, 2010 Short answer: No testing w/o core and sid module unless you have a different machine to test them in (c64, sidstation, hardsid, ...) :) Quote Link to comment Share on other sites More sharing options...
Smithy Posted April 14, 2010 Report Share Posted April 14, 2010 Is this is about as minimal as it gets: http://www.asciilifeform.com/parallelsid/parasid.html But of course you'll need a computer with an old printer port. Not sure if a usb to parallel cable would do. Quote Link to comment Share on other sites More sharing options...
Amanita Posted April 15, 2010 Author Report Share Posted April 15, 2010 Thanks for the suggestion Smithy. Looking at the Schematics for the Core module and the SID module i might just go ahead and build them on proto-board - there are not too many components afterall. Probably a "Famous Last Words" statement i know..... A Quote Link to comment Share on other sites More sharing options...
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