Changing the size of memory or changing the ROM version forces a reset of the PET.
The emulator has an IEEE-488 device at address 8. It can be used load and save (.prg) files.
Some programs don't run on ROM1 and some require more memory than the default 8K.
Mario Brothers style game.
This Commodore PET game has similar game mechanics to the original Mario Bros arcade game. Hit the floor under the turtles to flip them, and jump up to kick them. A one or two player action game made for the TOJam 2023 game jam. Mario Bros is not that well known .. it came after Donkey Kong but before Super Mario Bros, introduced Luigi for the first time and also changed Mario from a carpenter into the plumber that we know today.