MPL Bytecode Compiler Code

CONST IMPL:SET OF NAT=[
  NARGC,NARGV,NCTOL,NCTOU,NFEND,NFNEW,NFOLD,NFRDC,NFRDS,NFWRC,NFWRS,NIABS,NIMAX,
  NIMIN,NISQR,NSOFI,NMCPY,NMREV,NMSET,NRABS,NRADD,NRATN,NRCMP,NRCOS,NRCPY,NRDIV,
  NREXP,NRFRA,NRINT,NRLOG,NRMAX,NRMIN,NRMUL,NRNEG,NRROU,NRSIN,NRSQR,NRSRT,NRSUB,
  NIOFR,NSOFR,NSADD,NSCPY,NSDEL,NSINS,NSMID,NSCHR,NSSTR,NIOFS,NROFS,NVCLR,NVINS,
  NVRDC,NVRDK,NVRDS,NVWRC,NVWRS,NVCLS,NVDEL,NVGXY,NVKEY,NSFIX,NFEOF,NROFI];

PROCEDURE LIBNAT(FN:STR127); VAR F:TEXT; N:NAT; O:OPR;
  PROCEDURE WRV(S:STR127; I:INTEGER); BEGIN WRITELN(F,S,':',I) END;
  PROCEDURE WRI(S:STR127; I:INTEGER); BEGIN WRV('.'+S,I) END;
BEGIN
  IF FNEW(F,FN) THEN BEGIN
    WRV('TOM',ORD(VTOM)*2); WRV('AUX',ORD(VAUX)*2); WRV('TMP',ORD(VTMP)*2);
    WRI('FMIN',ORD(FMIN)); WRI('FMAX',ORD(FMAX));
    WRI('FINP',ORD(FINP)); WRI('FOUT',ORD(FOUT));
    FOR N:=LOW(NAT) TO HIGH(NAT) DO IF N IN IMPL THEN BEGIN
      STR(N,FN); DELETE(FN,1,1); WRI(FN,-ORD(N));
    END;
    WRITELN(F);
    FEND(F)
  END;
  FN := 'mpldefs.h';
  IF FNEW(F,FN) THEN
  BEGIN
    FOR O:=LOW(O) TO HIGH(O) DO BEGIN
      STR(O,FN); WRITELN(F, '#define ',FN, ' ', ORD(O));
    END;
    WRITELN(F);
    FOR N:=LOW(N) TO HIGH(N) DO BEGIN
      STR(N,FN); WRITELN(F, '#define ',FN, ' ', ORD(N));
    END;
    WRITELN(F);
    FEND(F);
  END;
END;