Author: LouD - generated on 2026-05-26
- Disclaimer
- PCB top overview
- RaspberryPi Pico placement orientation
- SID placement orientation
- 1. 12 volt or 9 volt selection jumper
- 2. Socket 2 6581 / 8580 SID type selection jumpers
- 3. Socket 1 6581 / 8580 SID type selection jumpers
- 4. Audio channel selection jumper
- 5. Address line A5
- 6. Uart debugging output port
- 7. Optional 330k pulldown resistor hooked up to EXT-IN for 8580 filter bypass in socket 2
- 8. Optional 330k pulldown resistor hooked up to EXT-IN for 8580 filter bypass in socket 1
- 9. Optional 1MHz crystal socket (not included in BOM)
- 10. Optional 1k resistor for 6581 SID in socket 2
- 11. Optional 1k resistor for 6581 SID in socket 2
- 12. Socket 2 audio out via dupont connector
- 13. Socket 1 audio out via dupont connector
- 14. Reset button
- License
In the placement overview image above there are 2 markings that designate toward what direction the Pico boards needs to be placed.
The USB marking and arrow point in the direction towards where the Pico USB port needs to be.
The Pin 1 marking and arrow points towards where pin 1 of the Pico board needs to be.
In the PCB overview image at the top of this document each SID socket has Pin 1 marked with text and an arrow.
Please use your full attention when placing your SID chips on the board so they in the correct orientation.
Incorrect placement orientation will result in frying your precious SID chip unicorn and creating a nice keychain!
I am not responsible for your broken SID chips!
-
open = for 6581 SID only!! (12 volts)
-
closed = for 8580 SID (9 volts)
-
closed on Socket 1 side = left & right channel for socket 1
-
closed on Socket 2 side = left channel for socket 2 & right channel for socket 1
Optionally you could use a 3-way jumper cap for mono audio with both SID chips at the same time.
For adressess above $1F (SKPico 2nd SID for example)
Both pins are routed to the same GPIO for using adresses higher then $20
Solder pad closed = enabled
Solder pad closed = enabled
Solder pad closed = enabled (when a crystal is socketed).
This disables the internal clock generation on the Pico
ATTENTION!: On older v1.0 PCB’s this solder pad is incorrectly labelled, it should read 6581!
Solder pad closed = enabled
ATTENTION!: On older v1.0 PCB’s this solder pad is incorrectly labelled, it should read 6581!
Solder pad closed = enabled
Socket 2 output to the right of the headphone jack
Ground and S2 as labeled
Socket 1 output to the left of the headphone jack
Ground and S1 as labeled
