C COPYRIGHT (C) 1983 GLENN EVERHART
C PERMISSION IS GIVEN TO ANYONE TO USE, DISTRIBUTE, OR COPY THIS
C PROGRAM FREELY BUT NOT TO SELL IT COMMERICALLY.
C
C	VT100 VIDEO DISPLAY COMMAND PROGRAM. CALLING SEQUENCE IS
C	CALL UVT100(CMD,N1,N2), WHERE CMD IS ONE OF THE COMMANDS IN
C	THE PARAMETER LIST BELOW, AND N1 AND N2 ARE OPTIONAL PARAMETERS
C	DEPENDING UPON CMD. SEE THE UVT100 USER'S MANUAL FOR MORE DETAILS.
C
C	AUTHOR:	GLEN HOFFING
C	DATE:	24-FEB-81
C	MODIFIED FOR PORTACALC BY GLENN EVERHART
C
      SUBROUTINE UVT100 ( CMD, N1, N2 )
      IMPLICIT INTEGER ( A - Z )
      DIMENSION PRL ( 6 )
      PARAMETER CUP = 1, CUU = 2, CUD = 3, CUF = 4, CUB = 5, DECDWL = 6
     $, DECDHL = 7, DECRC = 8, DECSC = 9, DECSWL = 10, ED = 11, EL = 12
     $, SGR = 13, NEL = 14, SCS = 15, SM = 16, RM = 17, ANSI = 18
      BYTE OUTBUF ( 16 )
      OUTBUF ( 1 ) = 27
      DO 20000  I = 2, 16
      OUTBUF ( I ) = 0
20000 CONTINUE
20001 CONTINUE
      IF (.NOT.( CMD .EQ. CUP )) GOTO 20002
      OUTBUF ( 2 ) = 1H[
      IF (.NOT.( N1 .GT. 0 . AND . N1 .LT. 25 )) GOTO 20004
      ENCODE ( 2, 10, OUTBUF ( 3 ) ) N1
20004 CONTINUE
      OUTBUF ( 5 ) = 1H;
      IF (.NOT.( N2 .GT. 0 . AND . N2 .LT. 133 )) GOTO 20006
      ENCODE ( 3, 105, OUTBUF ( 6 ) ) N2
20006 CONTINUE
      OUTBUF ( 9 ) = 1HH
      LEN = 9
      GOTO 20003
20002 CONTINUE
      IF (.NOT.( CMD .EQ. CUB )) GOTO 20008
      OUTBUF ( 2 ) = 1H[
      IF (.NOT.( N1 .GT. 0 . AND . N1 .LT. 133 )) GOTO 20010
      ENCODE ( 3, 105, OUTBUF ( 3 ) ) N1
20010 CONTINUE
      OUTBUF ( 6 ) = 1HD
      LEN = 6
      GOTO 20009
20008 CONTINUE
      IF (.NOT.( CMD .EQ. CUD )) GOTO 20012
      OUTBUF ( 2 ) = 1H[
      IF (.NOT.( N1 .GT. 0 . AND . N1 .LT. 25 )) GOTO 20014
      ENCODE ( 2, 10, OUTBUF ( 3 ) ) N1
20014 CONTINUE
      OUTBUF ( 5 ) = 1HB
      LEN = 5
      GOTO 20013
20012 CONTINUE
      IF (.NOT.( CMD .EQ. CUF )) GOTO 20016
      OUTBUF ( 2 ) = 1H[
      IF (.NOT.( N1 .GT. 0 . AND . N1 .LT. 133 )) GOTO 20018
      ENCODE ( 3, 105, OUTBUF ( 3 ) ) N1
20018 CONTINUE
      OUTBUF ( 6 ) = 1HC
      LEN = 6
      GOTO 20017
20016 CONTINUE
      IF (.NOT.( CMD .EQ. CUU )) GOTO 20020
      OUTBUF ( 2 ) = 1H[
      IF (.NOT.( N1 .GT. 0 . AND . N1 .LT. 25 )) GOTO 20022
      ENCODE ( 2, 10, OUTBUF ( 3 ) ) N1
20022 CONTINUE
      OUTBUF ( 5 ) = 1HA
      LEN = 5
      GOTO 20021
20020 CONTINUE
      IF (.NOT.( CMD .EQ. DECDHL )) GOTO 20024
      OUTBUF ( 2 ) = 1H#
      IF (.NOT.( N1 .EQ. 1 )) GOTO 20026
      OUTBUF ( 3 ) = 1H4
      GOTO 20027
20026 CONTINUE
      OUTBUF ( 3 ) = 1H3
20027 CONTINUE
      LEN = 3
      GOTO 20025
20024 CONTINUE
      IF (.NOT.( CMD .EQ. DECDWL )) GOTO 20028
      OUTBUF ( 2 ) = 1H#
      OUTBUF ( 3 ) = 1H6
      LEN = 3
      GOTO 20029
20028 CONTINUE
      IF (.NOT.( CMD .EQ. DECRC )) GOTO 20030
      OUTBUF ( 2 ) = 1H8
      LEN = 2
      GOTO 20031
20030 CONTINUE
      IF (.NOT.( CMD .EQ. DECSC )) GOTO 20032
      OUTBUF ( 2 ) = 1H7
      LEN = 2
      GOTO 20033
20032 CONTINUE
      IF (.NOT.( CMD .EQ. DECSWL )) GOTO 20034
      OUTBUF ( 2 ) = 1H#
      OUTBUF ( 3 ) = 1H5
      LEN = 3
      GOTO 20035
20034 CONTINUE
      IF (.NOT.( CMD .EQ. ED )) GOTO 20036
      OUTBUF ( 2 ) = 1H[
      IF (.NOT.( N1 .EQ. 0 )) GOTO 20038
      OUTBUF ( 3 ) = 1H0
      GOTO 20039
20038 CONTINUE
      IF (.NOT.( N1 .EQ. 1 )) GOTO 20040
      OUTBUF ( 3 ) = 1H1
      GOTO 20041
20040 CONTINUE
      OUTBUF ( 3 ) = 1H2
20041 CONTINUE
20039 CONTINUE
      OUTBUF ( 4 ) = 1HJ
      LEN = 4
      GOTO 20037
20036 CONTINUE
      IF (.NOT.( CMD .EQ. EL )) GOTO 20042
      OUTBUF ( 2 ) = 1H[
      IF (.NOT.( N1 .EQ. 0 )) GOTO 20044
      OUTBUF ( 3 ) = 1H0
      GOTO 20045
20044 CONTINUE
      IF (.NOT.( N1 .EQ. 2 )) GOTO 20046
      OUTBUF ( 3 ) = 1H2
      GOTO 20047
20046 CONTINUE
      OUTBUF ( 3 ) = 1H1
20047 CONTINUE
20045 CONTINUE
      OUTBUF ( 4 ) = 1HK
      LEN = 4
      GOTO 20043
20042 CONTINUE
      IF (.NOT.( CMD .EQ. SGR )) GOTO 20048
      OUTBUF ( 2 ) = 1H[
      IF (.NOT.( N1 .EQ. 7 )) GOTO 20050
      OUTBUF ( 3 ) = 1H7
      GOTO 20051
20050 CONTINUE
      OUTBUF ( 3 ) = 1H0
20051 CONTINUE
      OUTBUF ( 4 ) = 1Hm
      OUTBUF ( 5 ) = 8
      LEN = 5
      GOTO 20049
20048 CONTINUE
      IF (.NOT.( CMD .EQ. NEL )) GOTO 20052
      OUTBUF ( 2 ) = 1HE
      LEN = 2
      GOTO 20053
20052 CONTINUE
      IF (.NOT.( CMD .EQ. SCS )) GOTO 20054
      IF (.NOT.( N1 .EQ. 0 )) GOTO 20056
      OUTBUF ( 2 ) = 1H(
      GOTO 20057
20056 CONTINUE
      OUTBUF ( 2 ) = 1H)
20057 CONTINUE
      IF (.NOT.( N2 .EQ. 0 )) GOTO 20058
      OUTBUF ( 3 ) = 1HA
      GOTO 20059
20058 CONTINUE
      IF (.NOT.( N2 .EQ. 1 )) GOTO 20060
      OUTBUF ( 3 ) = 1HB
      GOTO 20061
20060 CONTINUE
      OUTBUF ( 3 ) = 1H0
20061 CONTINUE
20059 CONTINUE
      LEN = 3
      GOTO 20055
20054 CONTINUE
      IF (.NOT.( CMD .EQ. SM )) GOTO 20062
      OUTBUF ( 2 ) = 1H[
      OUTBUF ( 3 ) = 1H?
      IF (.NOT.( N1 .GT. 0 . AND . N1 .LT. 10 )) GOTO 20064
      ENCODE ( 1, 5, OUTBUF ( 4 ) ) N1
20064 CONTINUE
      OUTBUF ( 5 ) = 1Hh
      LEN = 5
      GOTO 20063
20062 CONTINUE
      IF (.NOT.( CMD .EQ. RM )) GOTO 20066
      OUTBUF ( 2 ) = 1H[
      OUTBUF ( 3 ) = 1H?
      IF (.NOT.( N1 .GT. 0 . AND . N1 .LT. 10 )) GOTO 20068
      ENCODE ( 1, 5, OUTBUF ( 4 ) ) N1
20068 CONTINUE
      OUTBUF ( 5 ) = 1Hl
      LEN = 5
      GOTO 20067
20066 CONTINUE
      IF (.NOT.( CMD .EQ. ANSI )) GOTO 20070
      OUTBUF ( 2 ) = 1H<
      LEN = 2
20070 CONTINUE
20067 CONTINUE
20063 CONTINUE
20055 CONTINUE
20053 CONTINUE
20049 CONTINUE
20043 CONTINUE
20037 CONTINUE
20035 CONTINUE
20033 CONTINUE
20031 CONTINUE
20029 CONTINUE
20025 CONTINUE
20021 CONTINUE
20017 CONTINUE
20013 CONTINUE
20009 CONTINUE
20003 CONTINUE
      DO 20072  I = 1, LEN
      IF (.NOT.( OUTBUF ( I ) .EQ. 1H  )) GOTO 20074
      OUTBUF ( I ) = 0
20074 CONTINUE
20072 CONTINUE
20073 CONTINUE
      CALL GETADR ( PRL, OUTBUF )
      PRL ( 2 ) = LEN
C 4608 = OCTAL 11000 = IO.WLB. COULD REPLACE BY FORTRAN WRITE
C BUT THIS IS FASTER FOR RSX. WRITES LEN BYTES FROM OUTBUF.
C TO LOGICAL UNIT 5 (USER'S TERMINAL).
C HERE LUN 6 IS USER'S TERMINAL TOO AND USED FOR OUTPUT SO USE
C IT INSTEAD OF 5 HERE.
      CALL WTQIO ( 4608, 6, 20,,, PRL )
5     FORMAT ( I1 )
10    FORMAT ( I2 )
105    FORMAT(I3)
      RETURN
      END