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Using The 162Bug Debugger
4
Syntactic Variables
4-2
The commands are shown using a modified Backus-Naur form syntax. The
metasymbols 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 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.
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 (').
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