Andrea Rossetti from Italy wrote a brief tutorial on how to build a
Bison parser for MSX using the
SDCC cross-compiler; the resulting .ROM program can read an input sequence, do a syntax check and perform actions on specific subgroups of tokens.
Possible applications that may benefit of a Bison parser are (among others) textual adventure games, compilers, interpreters and loaders of formatted data for game levels. Tutorial, source code and an example ROM file are available at
andrear's website.
Relevant link:
andrear's website 
