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.t TAPE11 ANSI format tape writer
.st EFBS at EE for ASW
.c;TAPE11
.c;ANSI format tape writer
.c;User's guide and documentation
.b 3
.p
TAPE11 is a TOPS-20 only utility to write tapes for transportation
to non-TOPS20 machines. ANSI standard labels are used to identify
the files written to the tape. TAPE11 has the capability to write either
ASCII or EBCDIC characters to the tape. It has limited support for
writing 8-bit binary images as well.
TAPE11 has full defaults for most parameters when writing tapes.
Defaults not built in on program startup are physical block length,
logical record length, volume ID and tape drive specification.
.b 2
.lm 5
.i -5;Command  Action
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.b 2
.i -5;ASCII
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.p
ASCII is the default character set to write tapes with. Since the KL10 is
using only 7 bits of data per byte, no parity bit is set when the
characters are converted to 8 bits. The character set in use determines
how labels are written. ASCII writes ASCII labels, EBCDIC writes EBCDIC
labels. The character set may not be changed after volume labels are
written.
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.b 2
.i -5;BLOCKSIZE
.p
BLOCKSIZE sets the number of bytes per physical record when writing
data to the tape. The command accepts a decimal number in the range of
80 to 32768. The default is 512. This command must be given before any
files may be written to tape. Setting the BLOCKSIZE to a value smaller
than the current RECORDSIZE produces a warning message, and resets the
RECORDSIZE to be equal to the BLOCKSIZE.
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.b 2
.i -5;DENSITY
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.p
DENSITY sets the bits per inch (BPI) to use when writing tapes.
Allowed values are 200, 556, 800, 1600, 6250 and DEFAULT. Setting an illegal
value (say 6250 BPI on a TU45) will produce errors only when data is
written to the tape. DEFAULT defaults to the last SET TAPE DENSITY given
to the EXEC.
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.b 2
.i -5;EBCDIC
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.p
EBCDIC sets the character set used in writing the tape to IBM EBCDIC.
All labels and data written will be translated from ASCII into EBCDIC.
Once data has been written to tape, the character set may not be changed.
See the ASCII command.
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.b 2
.i -5;EOT
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.p
EOT is a tape positioning command. It moves the tape to after the last
file (to the double tape mark). If the EOT command is used, the VOLUME
command must have been given or the file labels will be incorrect.
(The file set ID will show "Anylbl"). This command will produce an error
if data has already been written to tape.
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.b 2
.i -5;EXIT
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.p
EXIT ends the execution of TAPE11. The tape is unaffected.  CONTINUE
will restart TAPE11.
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.b 2
.i -5;FILE
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FILE specifies a file to write to the tape.
The specification allows wildcards in every field. The format of the command
is FILE#Str:_<Dev>File.Ext.Gen the default is *.*.*
Files that cannot be accessed are not processed. Data errors in the source file
are treated like an EOF. The FILE command may be given multiple times
in one running of TAPE11.
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.b 2
.i -5;FORMAT
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.p
FORMAT selects the data format to write the tape with. Options are
BINARY, DEFAULT, FIXED, IMAGE and VARIABLE. BINARY format is the same as
IMAGE, except that 8 bit bytes are read from disk.
Data is read from disk in RECORDSIZE chunks
and written directly to tape in BLOCKSIZE physical length records
without conversion. If RECORDSIZE does not equal BLOCKSIZE,
then the records written on tape are padded with the pad character.
The default format is IMAGE.
FIXED format is N records per block, each record taking up exactly
RECORDSIZE bytes, packed into a BLOCKSIZE buffer. Card image records
are written in this format. (80/800 normally).
VARIABLE format is the FILES11A format for compatability with RSX/RSTS/VMS
systems. In VARIABLE format, records of up to RECORDSIZE are read
and inserted into the BLOCKSIZE record with a 4 byte header. No
CR or LF is inserted after the record. NULLS are not written.
If a record is to big to fit in the space remaining, it is placed
at the start of the next block, and the partial block is filled
with pad characters.
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.b 2
.i -5;HEADERS
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The HEADERS command changes the number of HDR records written in the tape label
field. The minumum count is 2, the maximum is 9. The format of the command is
HEADERS n Where "n" is a positive decimal number. The records (HDR3 to HDR9)
are all blanks past byte position 4.
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.b 2
.i -5;HELP
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HELP lists a short description of all commands.
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.b 2
.i -5;INFORMATION
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INFORMATION lists all current settings and tape status. If a parameter
has not been set, it is so noted.
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.b 2
.i -5;LABELS
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LABELS sets a flag to inhibit the actual writing of labels on the tape.
If no labels are selected, the 80. character labels are not applied
to the tape. Arguments are YES to write the labels (default), and NO to
inhibit the writing. You must still supply a tape volume ID. This feature
is useful for writing straight card image tapes.
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.b 2
.i -5;PADDING
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.p
PADDING specifys the character used to pad incomplete records.
When BLOCKSIZE is not an exact multiple of RECORDSIZE, or a record
is read that does not fill RECORDSIZE in FIXED mode, there are unused
bytes at the end of the record or buffer. The pad character is inserted
to fill the gap. The default (at startup) is "_^" (octal 136). PADDING
requires one octal argument.
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.b 2
.i -5;PARITY
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.p
PARITY specifies the parity to use when writing the tape. Options are
EVEN or ODD. ODD parity is the standard, and is the default.
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.b 2
.i -5;PUSH
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.p
PUSH duplicates the action of the EXEC command PUSH. It starts up another
EXEC and waits for it to finish. Type POP to return to TAPE11.
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.b 2
.i -5;RECORDSIZE
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.p
RECORDSIZE specifies the logical record length for reading records from
disk, and the size of the logical record when blocking records together
in FIXED format. RECORDSIZE must not exceed BLOCKSIZE. The default is
512. byte records. The range is 80. to 32768.
RECORDSIZE requires a decimal number of bytes as an argument.
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.b 2
.i -5;TAPE
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TAPE specifies the tape drive to use for writing files. The tape
must be mounted without the labeled tape facility in action. This means
that the tape should be mounted as UNLABLED, or be put on an unrestricted
drive. Using a labeled tape with TAPE11 will produce an unreadable
result.
The TAPE command requires a valid tape specification as an argument.
I.E. MTA0:, not MT0:!!
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.b 2
.i -5;VOLUME
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.p
VOLUME specifies the 6 character volume identifier that is written
as the first record on the tape. It is also written as part of every
HDR1 and EOF1 record label. The default is "TAPE11", or if the
EOT command was given, "ANYLBL".
.lm 0
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.p
Tape errors are retried once (monitor retries are used). If the record
fails to write, a large inter-record gap (3 inches) is written, and
the operation is retried. If it still fails, the program gives up
and goes on to the next record. Errors are identified by block and
record number.
.p
After every file is written, a record and block total is printed.
After all files in a specification are processed, a message is printed.
Nulls are not written in VARIABLE format. After the last file on tape
is written, a double tape mark is made.
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-- Revised 18-nov-82 --