Finally scanned and uploaded the Model 600 Programmers reference and
Service Manual.
https://archive.org/details/tandy_600_26-3901_programmers_reference_and_bios_specification/
https://archive.org/details/tandy_600_26-3901_servicemanual/
Note that archive.org web viewer kind of destroys it, especially the
schematics. Download the pdf to get the real thing.
There's copies here too http://tandy.wiki/Model_600#Manuals
Another copy of the programmers ref already existed but the service
manual is new.
--
bkw
