Motorola MVME197LE manual Syntactic Variables, Expression as a Parameter

Using the 197Bug Debugger

The commands are shown using a modified Backus-Naur form syntax. The meta symbols used are:

	boldface strings	A boldface string is a literal such as a command or a program name,
		and is to be typed just as it appears.
	italic strings	An italic string is a “syntactic variable” and is to be replaced by one
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		of a class of items it represents.
		A vertical bar separating two or more items indicates that a choice
		is to be made; only one of the items separated by this symbol
		should be selected.
	[ ]	Square brackets enclose an item that is optional. The item may
		appear zero or one time.
	{ }	Braces enclose an optional symbol that may occur zero or more
		times.

Syntactic Variables

The following syntactic variables are encountered in the command descriptions which follow. In addition, other syntactic variables may be used and are defined in the particular command description in which they occur.

DEL	Delimiter; either a comma or a space.
EXP	Expression (described in detail in a following section).
ADDR	Address (described in detail in a following section).
COUNT	Count; the syntax is the same as for EXP.
RANGE	A range of memory addresses which may be specified either by ADDR
	DEL ADDR or by ADDR : COUNT.
TEXT	An ASCII string of up to 255 characters, delimited at each end by the
	single quote mark (').

Expression as a Parameter

An expression can be one or more numeric values separated by the arithmetic operators: plus (+), minus (-), multiplied by (*), divided by (/), logical AND (&), shift left (<<), or shift right (>>)

Numeric values may be expressed in either hexadecimal, decimal, octal, or binary by immediately preceding them with the proper base identifier.

4-2 Installation Guide