Tim O. has posted some information on a board he has in his PET 2001. To read what he has to say and to go to his .pdf's, go to
http://www.commodorecomputerclub.co.uk/forums/viewtopic.php?f=1&t=443 (http://www.commodorecomputerclub.co.uk/forums/viewtopic.php?f=1&t=443)
Truly,
Robert Bernardo
Fresno Commodore User Group
http://videocam.net.au/fcug (http://videocam.net.au/fcug)
I believe I own a copy of that, ROM and manual. I didn't yet investigate it so I can't say for sure it is the exact same software but I recognize the layout of the manual. Actually I have a couple of expansions that I will upload to Zimmers any day now...