If you look at the comments for component 934 in the D6 driver file you'll see that much of CBell was not distributed due to licensing restrictions. I don't know if we still have it and whether the licensing restriction still apply. CVell also calls ASMH to assemble the compiled program so it won't run on D6 as is. It could perhaps be patched to run ASMG, but that's moot if it's not there at all.

At the time of D6 support for C in MTS was not very good. By 1996 there were (or had been) three C compilers in MTS: CBell, C87, and C89. C89 was pretty good and passed most of the language verification tests. CBell had been retired and C87 was in limbo. Unfortunately I don't think any of these are on D6, either because they didn't exist or due to licensing restrictions.

Mike