Curt, do you have details on the cross assembler that atari used? It's referred to as 'Atari CAMAC' in the file, was that an in house creation by atari, or was it a third party tool that they used? I was curious (if it was an atari in house thing) if you had a copy of the assembler itself, and knew what it ran on? I think it'd be interesting to setup an emulator of the DEC mini's that atari was using, and reproduce the compilation techniques that atari originally used.
EDIT: guess CAMAC was for a DG system instead, regardless I'm willing to learn to set it all up to get the 'real atari experience,' at least in emulation, if you can find a copy of the program.
CAMAC was literally the Atari Macro Assembler that was ported to run on the MV/8000 (think of it as a 32-bit Eclipse, which...again, think of it like an extended Nova) that was the mainstay of the consumer dept. in the early 80s.
It was later ported to the department VAX.