Research V3 development

Work on file man/man4/mem.4

Co-Authored-By: Dennis Ritchie <dmr@research.uucp>
Synthesized-from: v3

diff --git a/man/man4/mem.4 b/man/man4/mem.4
new file mode 100644 (file)
index 0000000..1942556
--- /dev/null
+++ b/man/man4/mem.4
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+.pa 1
+.he 'MEM (IV)'3/15/72'MEM (IV)'
+.ti 0
+NAME           mem  --  core memory
+.sp
+.ti 0
+DESCRIPTION    mem\b\b\b___
+is a special file that is an image of the core memory
+of the computer.
+It may be used, for example, to examine,
+and even to patch the system using the debugger.
+
+Mem\b\b\b___ is a byte-oriented file; its bytes are numbered
+0 to 65,535.
+
+If a non-existent memory location is
+referenced, the user
+suffers the resultant bus error.
+
+Memory referenced through
+the file is treated with movb\b\b\b\b____ instructions.
+Certain device registers do not implement
+DATOB cycles to odd addresses.
+Other registers react strangely to this
+addressing.
+.sp
+.ti 0
+FILES          /dev/mem
+.sp
+.ti 0
+SEE ALSO       --
+.sp
+.ti 0
+BUGS           --