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MB6582 build. Issue with 12V 6581 sids chips


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So i am bussy building a MB6582 and i am this far to start testing sound. I build a MB6582 with 12V - 9V and 5V options. So that i can use all types of sid chips if i want.

The problem is when i'm using 12V 6581 sid chips. When a "note off" is played you will still keep hearing the last played note but a little less louder. I don't have this issue when i'm using 9V 6582 / 8580 sid chips. So i guess there is a problem somewhere in the 12V power line. Any ideas where to look?



Edited by serlein
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