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PDP-10 Archives
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bb-kl11i-bm_tops20_v7_0_atpch_1-22
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autopatch/pas2v1.b08
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BEWARE INFORMATION FOR PASCAL-20-V1
BEWARE INFORMATION FOR EDIT 4 IN PASCAL
PASCAL-20 now observes the following rules regarding shared file
access. These modifications maintain PASCAL-20's subset compatibility
with VAX PASCAL
1) Any file may be shared for reading, whether it is a text file or
not
2) No file may be shared for writing
3) A file which is to be shared for reading must be opened with an
attribute of READONLY
4) Text files opened with the OLD attribute may no longer be shared
5) The I/O error handling code no longer assumes that a RESET error
automatically means the file was not found, but issues the real
diagnostic instead
Please note that the behavior of some existing programs may change.
Programs which open text files with the OLD attribute with the intent
to allow multiple file readers must be modified to use READONLY
instead.
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END OF PASCAL-20-V1