ALGOL 68S
A compiler for ALGOL 68S was available for the PDP-11, written in the language BLISS. The multiprocessor version designed for the C.mmp has been preserved at the PDP Unix Preservation Society archive. Charles H. Lindsey created another implementation of ALGOL 68, named ALGOL 68S, for Sun-3, Sun SPARC (under SunOS 4.1), Sun SPARC (under Solaris 2), Atari ST (under GEMDOS) and Acorn Archimedes (under RISC OS), c.f. Charles Lindsey's Home Page The main differences between ALGOL 68 and 68S, as summarised from Appendix 4 of the Informal Introduction, include:
Implementations
ALGOL 68S is a programming language designed as a subset of ALGOL 68, to allow compiling via a one-pass compiler.