https://forum.vcfed.org/index.php?threads/commodore-pet-hsg-board-game.1250163/
Commodore PET HSG board Game | Vintage Computer Federation Forums
Morning all, Do any of you have the HSG (hi res graphics board) for the PET running at 512x512 ? If so have a go at this asteroids port I managed to get...
commodore petboard gamevintage computerhsgfederation
https://unsafeperform.io/blog/2015-03-02-initial_version_of_my_commodore_pet/
Initial version of my Commodore PET (2 March 2015)
initial versioncommodore petmarch
https://classiccmp.org/pipermail/cctalk/2017-May/034755.html
BETSI Expander for the Commodore PET
for theexpandercommodorepet