hello people!
Is there any way to know is SID working without puting them in SID module. Can i for example use JDM to read a data from them and chek is it in good condition???
Hi,
Errr… whatever 
You can test them on C64 =) (Of course only replacing same type of SID)
SIDs are specialized “mixed mode” chips with digital and analog portions - These really can’t be tested to be fully functional without putting them on some sort of working circuit. Even seemingly “ok” chip can have something like one broken osc.. ect.
Bye, Moebius