Recently I heard, that tiny c associates, OSS, Inc., Thomas A. Gibson and Scott B. Guthery have published a C interpreter in 1978 and 1982!
From Atari FAQ (thanks to Michael Current, Freddy and all the others) we find:
First sold C compiler by OSS. This compiler was used to compile itself! First true language "bootstrap" on any 8-bit machine (it was also available for Apple and CP/M machines). Derived from Dr.Dobbs "Small C". Compiles to 6502 code which emulates the 8080 instruction set.
Thanks to Kevin Savetz and archive.org, we do have the manual:
tiny-c_manual.pdf 2.52MB 255 downloads ; size: 2.6 MB
and some other infos:
But the main important question is: does an atr-image of the disk exists?
So many thanks in advance for helping us. :-)