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.
Originally written by Paul Jay for the Commodore PET (C+VG, 81-11) and won their Games Program of the Year competition (C+VG, 82-12).