Advice wanted (noobish questions)

MIDIbox SID
21

The 6582 was never used in production. There are different rumours why this chip was designed. Some people say it was meant for the C65 (successor to the C64, never sold, only prototypes exist).

It was used in the SID Symphony carts, but I tend to believe the C65 rumours, I doubt they made a run of them just for that one cart :wink:

22

and yes, there are differences in 6581 too… which revision is yours?

I have a 6581 R4 installed. And a few others lying on the shelf - got to test them in this regard some time…

Seppoman

23

i believe the R4 is the only one, which works correct..