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| Title: | -={ H A C K E R S }=- |
| Notice: | Write locked - see NOTED::HACKERS |
| Moderator: | DIEHRD::MORRIS |
|
| Created: | Thu Feb 20 1986 |
| Last Modified: | Mon Aug 03 1992 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 680 |
| Total number of notes: | 5456 |
355.0. "FORTRAN Tape I/O to block records?" by LA780::LONGO (Bob Longo) Fri Nov 14 1986 12:37
I am trying to write a tape from FORTRAN with blocked records, but
am having two problems:
1) The records are not coming out blocked
2) FORTRAN I/O does not seem to buffer output so the tape drive
streams.
I am trying to create an IBM format tape (EBCDIC label and data)
by mounting the tape /FOREIGN, then opening the tape with
"STATUS='NEW',RECL=80,RECORDTYPE='FIXED'" to write the label, then
STATUS='NEW',RECL=133,BLOCKSIZE=2660,RECORDTYPE='FIXED',FORM='FORMATTED'
to write the data. I am using formatted IO (133A1) to write the
data, but it doesn't come out blocked, and the tape does not stream.
Has anyone else tried to do this type of tape I/O successfully from
FORTRAN? What am I doing wrong? Do I have to use $QIOs to do what
I want?
Thanks,
-Bob Longo
| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 355.1 | (almost) certainly | DYO780::DYSERT | Barry Dysert | Mon Nov 17 1986 08:49 | 11 |
| Off hand, I'd say you can certainly do what you want through Fortran.
The only thing preventing me from saying it for sure is that I've
never done it. Three ideas immediately come to mind:
1. At first glance I think you should try writing each record as A133
instead of 133A1.
2. There is an ETAPE program from DECUS that lets you mess with EBCDIC
tapes quite well. (Send me mail if you want a copy.)
3. If neither of these ideas proves fruitful, post a note in TLE::FORTRAN.
|