I have seen no evidence of this in papers by Martin Richards, including the earliest BCPL manual or the contemporary papers on CPL by Strachey et al. The descr

I have seen no evidence of this in papers by Martin Richards, including the earliest BCPL manual or the contemporary papers on CPL by Strachey et al. The descriptions of how the CPL compiler worked (eg Strachey’s paper on GPM, Richards more recent retrospectives) all talk about writing the compiler in CPL and translating it by hand to macro assembly. I have not yet managed to look at Richards PhD thesis which contains the first draft description of BCPL, which he sketched after working on the CPL compiler and shortly before moving to MIT where he first implemented BCPL.