 The original Mary compiler was written in NU ALGOL, ran on the Univac-1100 series and was used to bootstrap a native compiler for ND-100/Sintran-III.RUNIT implemented a CHILL compiler written in Mary which ran on ND-100 and had Intel 8086 and 80286 targets.When this compiler was ported to the VAX platform, a common backend for Mary and CHILL was implemented.