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.
In POLICE!, you move around a city map, trying to locate a criminal controlled by the PET. You can't see the criminal unless you're within a single city block, but you get periodic alerts (such as ROBBED BANK) that give you clues as to where they might be. You can place a limited number of roadblocks to aid your pursuit.