SUBROUTINE SETKEY 
    
      INTEGER     CHAR  
      INTEGER     CHMASK
      INTEGER     CR, LF
      INTEGER     CRLF  
      INTEGER     BLANK, PERIOD 
      INTEGER     BLANKS, DASHES, COLONS, SLASHS
      INTEGER     ACH, BCH, CCH, DCH, ECH, FCH  
      INTEGER     GCH, HCH, ICH, JCH, KCH, LCH  
      INTEGER     MCH, NCH, OCH, PCH, QCH, RCH  
      INTEGER     SCH, TCH, UCH, VCH, WCH, XCH  
      INTEGER     YCH, ZCH  
      INTEGER     LBRACE, RBRACE
      INTEGER     LBRACK, RBRACK
      INTEGER ICLP04
      COMMON      /CHARAC/ CHAR 
      COMMON      /CHARAC/ CHMASK   
      COMMON      /CHARAC/ CR, LF   
      COMMON      /CHARAC/ CRLF 
      COMMON      /CHARAC/ BLANK, PERIOD
      COMMON      /CHARAC/ BLANKS, DASHES, COLONS, SLASHS   
      COMMON      /CHARAC/ ACH, BCH, CCH, DCH, ECH, FCH 
      COMMON      /CHARAC/ GCH, HCH, ICH, JCH, KCH, LCH 
      COMMON      /CHARAC/ MCH, NCH, OCH, PCH, QCH, RCH 
      COMMON      /CHARAC/ SCH, TCH, UCH, VCH, WCH, XCH 
      COMMON      /CHARAC/ YCH, ZCH 
      COMMON      /CHARAC/ LBRACE, RBRACE   
      COMMON      /CHARAC/ LBRACK, RBRACK   
      COMMON      /CHARAC/ ICLP04   
    
      LOGICAL     MPFLAG
      LOGICAL     OVMODE
      LOGICAL     LBMODE
      LOGICAL     LOADRB
      LOGICAL     SFLAG 
      INTEGER     VERS  
      INTEGER     LOADAD
      INTEGER     ZLOC, ZSTR, ZMAX, ZLIMIT  
      INTEGER     CLOC, CSTR, CMAX, CLIMIT  
      INTEGER     NLOC, NSTR, NMAX, NLIMIT  
      INTEGER     DLOC, DSTR, DMAX, DLIMIT  
      INTEGER     OLOC, OMAX, OSET  
      INTEGER     START 
      INTEGER     MODNLX
      INTEGER     CKSUM 
      INTEGER     KEY   
      INTEGER ICLP05
      COMMON      /LDATAX/ MPFLAG   
      COMMON      /LDATAX/ OVMODE   
      COMMON      /LDATAX/ LBMODE   
      COMMON      /LDATAX/ LOADRB   
      COMMON      /LDATAX/ SFLAG
      COMMON      /LDATAX/ VERS 
      COMMON      /LDATAX/ LOADAD   
      COMMON      /LDATAX/ ZLOC, ZSTR, ZMAX, ZLIMIT 
      COMMON      /LDATAX/ CLOC, CSTR, CMAX, CLIMIT 
      COMMON      /LDATAX/ NLOC, NSTR, NMAX, NLIMIT 
      COMMON      /LDATAX/ DLOC, DSTR, DMAX, DLIMIT 
      COMMON      /LDATAX/ OLOC, OMAX, OSET 
      COMMON      /LDATAX/ START
      COMMON      /LDATAX/ MODNLX   
      COMMON      /LDATAX/ CKSUM
      COMMON      /LDATAX/ KEY  
      COMMON      /LDATAX/ ICLP05   
    
      INTEGER     CMFILE (16)   
      INTEGER     RBFILE (16)   
      INTEGER     OBFILE (16)   
      INTEGER     MPFILE (16)   
      INTEGER     DBFILE (16)   
      INTEGER     TIFILE (3)
      INTEGER ICLP03
      COMMON      /FILES / CMFILE   
      COMMON      /FILES / RBFILE   
      COMMON      /FILES / OBFILE   
      COMMON      /FILES / MPFILE   
      COMMON      /FILES / DBFILE   
      COMMON      /FILES / TIFILE   
      COMMON      /FILES / ICLP03   
    
      INTEGER     MEMORY (4096) 
      INTEGER     MEMX  
      INTEGER     MEMLOC
      INTEGER     ROM (64)  
      INTEGER     ONEK, ENDK
      COMMON      /MEMORY/ MEMORY   
      COMMON      /MEMORY/ MEMX 
      COMMON      /MEMORY/ MEMLOC   
      COMMON      /MEMORY/ ROM  
      COMMON      /MEMORY/ ONEK, ENDK   
      INTEGER     VALUE, VALUE2, I, GCHAR   
      IF ((KEY.LT.1).OR.(KEY.GT.5)) RETURN  
      VALUE = 0 
      VALUE2 = 0
      DO  13090 I = 1,4 
      CHAR = GCHAR (RBFILE, I+5)
      CHAR = IAND (CHAR, CHMASK)
      IF ((CHAR.GE.ACH).AND.(CHAR.LE.FCH)) CHAR = CHAR - 7  
      VALUE = ISHFT (VALUE, 4) + (CHAR - 48)
      CHAR = GCHAR (RBFILE, I+10)   
      CHAR = IAND (CHAR, CHMASK)
      IF ((CHAR.GE.ACH).AND.(CHAR.LE.FCH)) CHAR = CHAR - 7  
      VALUE2 = ISHFT (VALUE2, 4) + (CHAR-48)
13090 CONTINUE  
    
      GOTO (100,200,300,400,500) KEY
  100 NSTR = VALUE  
      NLOC = VALUE  
      CALL UPDATE (NLOC, 0, NMAX)   
      GOTO 1000 
  200 DSTR = VALUE  
      DLOC = VALUE  
      CALL UPDATE (DLOC, 0, DMAX)   
      GOTO 1000 
  300 ZSTR = VALUE  
      ZLOC = VALUE  
      CALL UPDATE (ZLOC, 0, ZMAX)   
      GOTO 1000 
  400 CSTR = VALUE  
      CLOC = VALUE  
      CALL UPDATE (CLOC, 0, CMAX)   
      GOTO 1000 
  500 ONEK = ISHFT (VALUE, -10) + 1 
      ENDK = ISHFT (VALUE2, -10) + 1
      DO  13092 I = ONEK, ENDK  
      ROM (I) = 1   
13092 CONTINUE  
    
 1000 CONTINUE  
      RETURN
      END