MixSID configuration guide

C64 mainboard

Assy.

Mainboard audio out routing

SID2

Model

SID1

Model

Runtime Control
open = HIGH, closed = LOW

Mode Select (parallel/stereo)

Priority Select (which SID at $D400)

I/O1 Enable (second at $DE00)

I/O2 Enable (second at $DF00)

Mixer Control MSB (M1)

Mixer Control LSB (M0)

0000

0000

primary

mode

address

secondary

mode

address