C compiler for micro/RSX

[Eric Halpern]

I am in search of a C compiler to run under micro/RSX / RSX-11M-PLUS on
a microPDP 11/73.  I know of a compiler available from Whitesmiths, but
have reservations about what seems to be *non-standard* interface to certain
machine dependent library functions. I would appreciate any comments on
Whitesmiths and/or suggestions for and warnings against any other available 
compilers.

...uw-beaver!tikal!dataio!butler!halpern