I made the optimised psu and now everything seems ok but i have no sounds from the sid… when i use JSyinthLib i hear clicks when turning the pots or sending a “Play patch”, but no sounds. Anyone has any ideas? What checks can i do? :-\
I’m using a core v2 and a 8580 sid.
i guess your 8580 is dead.
try to turn every osc ON and OFF and back ON. and check for sounds every time. you sending it any notes?
Search in the forum for “interconnection_test” and “interconnection test”, there are a lot of hints within the appr. articles, how to debug the SID module
Best Regards, Thorsten.
Everything works fine now, i checked the sid board with the interconnection_test and noticed that both the 74HC595 where dead.
Now it’s time to build the control surface! ;D
a couple of questions:
1- Is this PLED display ( http://www.elettroshop.it/files/prodotti/download/deltaopto/PDC1602M03.pdf ) supposed to work with the core_module or it does need more driving strength?
It’s HD44780 compatible and needs a supply current of 0.35(typical) to 0.60(max) mA. Do I need to make any improvement on the psu (I’m using the c64 optimised psu) in order to drive 4 core + 4 sid + full cs + PLED display?
2 - Is it possible to have mixed sid types in the chain (eg. 2x8580 + 2x6501) without modyfing the psu or the best noise-proof solution is to have a psu for each sid type?
thanks!
Shaduz
Great that it is finally working 
I will answer both questions at the same time: the best PSU solution is the one which is documented in this schematic http://www.ucapps.de/mbhp/mbhp_4xsid_c64_psu_optimized.pdf - it’s exactly the circuit that I’m using, and my MBSID is stuffed with 2x8580 and 2x6581 - the same like yours
This PSU should also be sufficient to power the PLED display
Best Regards, Thorsten.