SUBROUTINE  GENLXY (OREG) 
 
      INTEGER     OREG 
 
      INTEGER     ADDR,   ADRFLG, CUROP,  NEXTOP, CFLAG 
      INTEGER     PI,     XBBL,   XA,     XF,     XZERO,  DPVFLG 
      INTEGER     LC,     LCI,    LODLCI, LODLCV, LDLCVO, MAXLCV 
      INTEGER     NEXT,   NUMBER, I,      IOTYPE 
      INTEGER     J,      K,      L,      LABNLX, M,      N 
      INTEGER     PSYMB,  SYMBOL, TOP,    VALFLG, QVALUE 
      INTEGER     OPTOPX, OPNXTX, TOPX,   NEXTX 
      INTEGER     DUMMY,  OVCHN,  PEEKS 
      INTEGER     LO,     CI,     CO,     LOGICF, LOCSUP 
      INTEGER     VAREF,  INPUTJ, LCTS,   CRUCNT, FLTCNT 
      INTEGER ICLP05 
      LOGICAL     ENDOK,CONEND 
      COMMON   /LOGOS/  ADDR,   ADRFLG, CUROP,  NEXTOP, CFLAG 
      COMMON   /LOGOS/  PI,     XBBL,   XA,     XF,     XZERO,  DPVFLG 
      COMMON   /LOGOS/  LC,     LCI,    LODLCI, LODLCV, LDLCVO, MAXLCV 
      COMMON   /LOGOS/  NEXT,   NUMBER, I,      IOTYPE 
      COMMON   /LOGOS/  J,      K,      L,      LABNLX, M,      N 
      COMMON   /LOGOS/  PSYMB,  SYMBOL, TOP,    VALFLG, QVALUE 
      COMMON   /LOGOS/  OPTOPX, OPNXTX, TOPX,   NEXTX 
      COMMON   /LOGOS/  DUMMY,  OVCHN,  PEEKS 
      COMMON   /LOGOS/  LO,     CI,     CO,     LOGICF, LOCSUP 
      COMMON   /LOGOS/  VAREF,  INPUTJ, LCTS,   CRUCNT, FLTCNT 
      COMMON   /LOGOS/  ICLP05 
      COMMON   /LOGOS/  ENDOK,CONEND 
 
      INTEGER  AREG,   XREG,   YREG,   NRREGS 
      INTEGER  STATUS (10),    STAREG, STXREG, STYREG 
      INTEGER  REGS (10) 
      INTEGER  ACTREG (2),      ACTLO,  ACTHI 
      INTEGER  NZREG 
      INTEGER ICLP10 
      COMMON   / REGS / AREG,   XREG,   YREG,   NRREGS 
      COMMON   / REGS / STATUS, REGS,   ACTREG, NZREG 
      COMMON   / REGS / ICLP10 
      EQUIVALENCE    (ACTLO,  ACTREG (1)) 
      EQUIVALENCE    (ACTHI,  ACTREG (2)) 
      EQUIVALENCE    (STAREG, STATUS (1)) 
      EQUIVALENCE    (STXREG, STATUS (2)) 
      EQUIVALENCE    (STYREG, STATUS (3)) 
 
      INTEGER  CLRACV 
      INTEGER  CLRACX 
      INTEGER  CLRSTA 
      INTEGER  TRAREG 
      INTEGER  SAVREG 
      INTEGER  CTFREE 
      INTEGER  SETREG 
      INTEGER  ICLP11 
      COMMON   /RMCODE/ CLRACV, CLRACX, CLRSTA, TRAREG, SAVREG 
      COMMON   /RMCODE/ CTFREE, SETREG 
      COMMON   /RMCODE/ ICLP11 
 
      INTEGER     STK (20, 13) 
      INTEGER     NAMEX (40) 
      INTEGER     OPX,    STKSIZ, OCBIT,  FUNBIT, SBIAS 
      INTEGER ICLP14 
      COMMON      /SDEFS/ STK,    OPX,    STKSIZ, OCBIT,  FUNBIT, SBIAS 
      COMMON      /SDEFS/ ICLP14 
      EQUIVALENCE (STK (1,1), NAMEX (1)) 
 
      INTEGER     OPCODE (20) 
      EQUIVALENCE (STK (1, 9), OPCODE (1)) 
 
      INTEGER     OP, LEFT, RIGHT, LSTKX, RSTKX 
      INTEGER     TS, LOAD, BASE 
      INTEGER     THIS, OTHER, SIDE, HI, LOW 
      INTEGER     INTBR, ROW, COL, INREG, OUTREG 
      INTEGER     BCC, BNE 
      INTEGER     CLC, JMP, LDAABS, LDAI, LDAZP 
      INTEGER     SBCI, SEC, STAZP, TAX, TXA 
      LOGICAL     COMZER, EZSTA, MORE 
      COMMON      /GCOM/   OP, LEFT, RIGHT, LSTKX, RSTKX 
      COMMON      /GCOM/   TS, LOAD, BASE 
      COMMON      /GCOM/   THIS, OTHER, SIDE, HI, LOW 
      COMMON      /GCOM/   INTBR, ROW, COL, INREG, OUTREG 
      COMMON      /GCOM/   BCC, BNE 
      COMMON      /GCOM/   CLC, JMP, LDAABS, LDAI, LDAZP 
      COMMON      /GCOM/   SBCI, SEC, STAZP, TAX, TXA 
      COMMON      /GCOM/   COMZER, EZSTA, MORE 
      INTEGER     BCODE (3, 3) 
      DATA        BCODE / 169, 173, 165, 162, 174, 166, 160, 172, 164/ 
     1 
      TS = OPCODE (SIDE) 
      DO  13028 I = 1, 3 
      IF (.NOT. (BCODE (I, 1) .EQ. TS))GO TO 13030 
 
      OPCODE (SIDE) = BCODE (I, OREG) 
      CALL REGMAN (SAVREG, OREG, DUMMY) 
      CALL GENDO 
      OPCODE (SIDE) = BCODE (I, 1) 
      ACTLO = OREG 
      RETURN 
13030 CONTINUE 
 
13028 CONTINUE 
 
      CALL GENLA 
      CALL GENTRA (AREG, OREG) 
      RETURN 
      END