KiCad boards from 2 GitHub repositories tagged “mos6581”, the most starred first; open any of them in PCBKit.
LouDnl/USBSID-Pico
USBSID-Pico is a RPi Pico (RP2040/W RP2350/W) based board for interfacing one or two MOS SID chips and/or hardware SID emulators over (WEB)USB with your computer, phone, ASID supporting player or USB midi controller
roybaer/renovation_ssi_2001
Innovation SSI-2001 replica that can be built without vintage components
LouDnl/USBSID-Pico
USBSID-Pico is a RPi Pico (RP2040/W RP2350/W) based board for interfacing one or two MOS SID chips and/or hardware SID emulators over (WEB)USB with your computer, phone, ASID supporting player or USB midi controller
LouDnl/USBSID-Pico
USBSID-Pico is a RPi Pico (RP2040/W RP2350/W) based board for interfacing one or two MOS SID chips and/or hardware SID emulators over (WEB)USB with your computer, phone, ASID supporting player or USB midi controller