pettester is a test ROM for your PET. It is based on the PETTESTE2K written by David Roberts. All the versions that he shared in this post are contained in the "petteste2k" subdirectory.

Two changes where added to the original PETTESTE2K:

• Checksums are not computed over the full 4KB anymore, but rather over the 2KB that are contained in a single ROM.
• For every ROM, the first 16 bytes are shown on the screen.

I added these changes to find the issue that prevented my stubborn 2001 from working. Maybe they are useful for other people, too.

To build pettester, you need the following tools:

• make
• cbmasm

Then, just run make to build pettester.bin

Copyright (c) 2023 Andreas Signer. Licensed under GPLv3.