i'm geting continous beep sound from sid

Testing/Troubleshooting
1

after hooking my SID to core (core itself works cause i’m getting correct response from midi-ox). any ideas why?

greets

tomasz

2

after hooking my SID to core

I read somewhere that the sid chip itself has thing where its always outputing a quite sound in the background?  I got used to mine doing this.  Its a feature if you will.  

Or is what your hearing like a stuck midi note on?

Christopher.