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BB-D867C-BM
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uetp/lib/tapwrt.for
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PROGRAM TAPWRT
c This program will write in industry compatible mode a full tape
c till EOT ( 32 bits out of 36 in 4 8-bit bytes )
c This mode is used by our friendly competition and standardized.
c
c For checking puposes we will write variable length records with
c the following pattern ( to be verified by TAPRED )
c
c FILE 1 : 16 RECORDS of 16 words
c FILE 2 : 17 RECORDS of 17 words
c ....
c FILE N : N+15 RECORDS of N+15 words
c
c WORD 1 of each record has RECORD-length shifted left 4 bits
c WORD 2 of each record has RECORD-Nr within FILE shifted left 4 bits
c WORDS 3 to n have number n shifted left 4 bits
c
c The last RECORD ( or FILE ) will be terminated by EOT and will not
c necessarily be complete
c
IMPLICIT INTEGER (A-Z)
dimension IBUF (8192)
DO 10 I=3,8192
10 IBUF(I)=I*16 !FILL IBUF WITH SOMETHING RECOGNIZABLE
c Get TAPE-Nr and DENSITY ( 800 or 1600 )
TYPE 10020
ACCEPT 10030,OU
TYPE 10010
ACCEPT 10060,IDEN1
IF (IDEN1 .EQ. 800 ) IDEN=3
IF (IDEN1 .EQ. 1600) IDEN=4
CALL TOPEN (OU, JFN, 1, 32768, IDEN, 4, 0)
call trew(jfn) !rewind it first
20 N=0
c Start writing
TYPE 10040
DO 60 J=16,8192
len=j*4
N=N+1
ibuf(1)=16*j
do 30 jj=1,j
ibuf(2)=16*jj
30 CALL TWRITE (JFN,IBUF,len,FLAG1,FLAG2,$40)
CALL TWEOF(JFN)
GO TO 60
40 j1=j-15
IF ((FLAG1 .EQ. 'E O T') .AND. (FLAG2 .EQ. ' ')) GOTO 50
TYPE 10090,jj,J1
GOTO 90
50 TYPE 10100,J1,JJ
call tweof(jfn) !write first eof-mark
GOTO 80
60 CONTINUE
70 TYPE 10110
CALL TWEOF (JFN)
IF (LEN .LT. 0) GOTO 20
80 call tweof(jfn) !write 2'nd EOF-mark
CALL TREW (JFN)
90 TYPE 10120,FLAG1, FLAG2
STOP
10010 FORMAT(' Density to WRITE ( 800 or 1600 ): '$)
10020 FORMAT (' Output LOGICAL tape name: '$)
10030 FORMAT (A5)
10040 FORMAT (' Starting WRITE loop')
10060 FORMAT (I)
10070 FORMAT (1H0,2I5,' Length= ',I6,' Record no. = ',I6)
10090 FORMAT (' ? Error in TWRITE FILE NR. ',I6,' record no. ',I6)
10100 FORMAT (' END-OF-REEL detected in TWRITE FILE Nr. ',I6,
1' RECORD Nr. ',I6)
10110 FORMAT (' End of file')
10120 FORMAT ( ' Error indicator: '2A5)
END