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.
CEDPR is a utility program to print out screens created with the text editor CED, published in CURSOR #4. There are some challenges in getting CED running in the first place: the program will only run on an original ROM PET 2001, and it requires a datasette. CEDPR also requires a printer, further complicating the setup. Getting printer configurations and interfaces set up correctly was a challenge in the early days of computing (and, arguably, remained a challenge even into the 1990s).