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rawtap Allows extract, create and append operations on .tap files. cpytap Copies a .tap file to a new .tap file while allowing file level edits; skip file, replace file, append files and insert files. Any files copied from the original source .tap will have their internal record structure maintained. cosy COSY is the compressed format used by the CDC1700. This program allows for extraction of all files from an archive and the creation of a new archive. It assumes that you would have used raw tap about to have extracted the COSY file from a tape. dbtap Utility to read, write and list .tap containers written in the DOS/BATCH-11 format. It understands ascii and binary modes and can be used to transfer files in and out of most PDP-11 operating systems (not sure about RSTS/E), early VMS and early TOPS-10 systems.
25 lines
1.2 KiB
Plaintext
25 lines
1.2 KiB
Plaintext
cosy manipulates files in the CDC1700 COSY format (note this is different from
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the CDC3000 series COSY format). COSY is a format used for containing card
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images as ASCII files using run length encoding of 3 or more spaces to reduce
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the amount of space required. Multiple card decks may be present in a single
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COSY file. File naming in the host environment makes use of the deck name
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which is optionally present in the CSY/ cards. For decompression, if a deck
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name is present, the host file will be named "deck_<deckname>" otherwise it
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will be named "nnnnn.deck" where nnnnn is the position number of the deck
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within the COSY file. On compression, source files named "deck_<deckname>"
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will result in the CSY/ deckname being filled in otherwise an empty name wil
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be used.
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To compress a COSY format file:
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cosy -c <cosyFile> file ...
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To decompress a COSY format file:
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cosy -d <cosyFile>
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When decompressing a COSY format file, CSY/ and END/ card images are removed
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from the output. On compression, a CSY/ card image is inserted at the start
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of the output and a END/ card is appended to the output. The resulting
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compressed file will be padded, with NULLs, to be a multiple of 384 bytes.
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