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.
NAB! is a PET version of Sega's 1979 aracade game Head On. The controls are responsive and the game moves along at a good pace. The display makes good use of the PETSCII character set and the sound effects fit naturally with the gameplay.