The parser generator I used: PARSEGEN.
And the grammar it reads: GRAMMAR.
The main program of the compiler: GLOBAL
And its separately-compiled passes: Pass 5 generates JANUS intermediate code, which is converted to 370 assembler by the following Spitbol/Snobol program:
JANUS
The parse tables read by the compiler before it starts compiling the Algol 68 source code: