Although it was a classroom full of PET 4032s that got me interested in Commodore back in the early 80s, the first PET I would ever own myself was the Commodore SuperPET.
I was not yet collecting at this point, so I thought this would be the only PET I would ever own. For that reason, I was very careful in which model I picked. I wanted the best.
Over the years, the numerous exotic programming languages, such as Waterloo BASIC, APL, Pascal, COBOL, etc have provided me countless hours of education and entertainment. Lately, however, my appreciation of this machine has leapt into the stratosphere.
It began with a purchase of Retro Innovations Super OS/9 MMU. OS/9 is a 6809-based business operating system not normally associated with Commodore computers, and this hardware upgrade would allow my SuperPET to run it. The Super MMU, originally designed by TPUG, provides a new optional method by which the 6809 can address its extra 64K. Normally, this memory is only available in chunks at a particular address window. The SuperMMU allows the ram to dominate the entire address space, making it friendlier to OS/9.