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util/int/READ_ME

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+# $Header$
+
+This directory contains the sources of the EM interpreter. A parallel
+directory contains the manual page and the documentation.  Two types of
+interpreters can be generated.
+
+- Normal Version
+A call to  make  will result in the generation of an interpreter,  int.  This
+interpreter will do full checking and can do logging on request.  It is the
+normal interpreter to be used for software checking and grooming.
+
+- Fast Version
+If the interpreter is used for the purpose of running programs rather than for
+testing them, a considerably faster version can be generated by undefining the
+macro   LOGGING   in the include file   logging.h .  This interpreter will
+still give some warnings: about bad trap numbers, unimplemented system calls
+and the occurrence of traps.
+
+There are a small number of compile-time flags, each in a separate file:
+	loggin.h	- distinguishes between normal and fast version
+	debug.h		- ignore
+	segcheck.h	- ignore
+	sysidf.h	- define the approrpiate system name
+	v7ioctl.h	- define if ioctl requests should conform to UNIX V7
+	nofloat.h	- define if the C compiler used has no floating point
+
+
+Installation note:
+The file do_fpar.c (do floating point arithmetic) contains a macro  MAXDOUBLE
+which defines the largest possible double on the present machine. It is set to
+99.e999, which may not be acceptable to your compiler. Adjust as necessary.
+
+Note:
+This interpreter assumes that the  char  in the C compiler used to translate
+the interpreter, is a signed char.  It is not impossible to adapt the
+interpreter to unsigned chars, but it is not trivial.
+