Need help creating retro style opertating system

Im working on creating a retro style computer reminiscent of the Commodore 64. I would like to create a simple OS for the computer similar to the GEOS. I know this project sounds kind of strange but I feel there could be a market for this type of thing. There seems to be a new appreciation and interest in old style computers. I think it would be pretty cool to recreate an 8-bit computer but with modern updates. I just don't have the coding experience to create the OS, so that's why Im posting this.


Paid: possibly
Location: US
Type: Part time?
Requirements: experience with code, specifically Assembly.