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PATCH COMMAND
21.3 -- Special
Conside~ations
will be the absolute address
o~
the current location.
For
example,
the rollowing uses
oT
the period can save
time and eliminate remembering the
address
Or
the
current
location:
Command Function
., nO
Sets
the
o~fset
to the current location
i9 "n" is the value of the offset
be'o~e
the command is entered .
. <cr>
Displays
the
contents
and the address
o~'
the
current
location .
. I<str>
Opens the current
location
and
applies
the changes from the string <str).
It is
not necessary for the operator
to
count
the
number
of
elements in <str> if the
next command is to
apply
more
changes.
Long
strings
are
usually
changed
by
initially using the "m,nI"
form
o~
the
change' command.
Thenl
subseq,uent changes
use
It,
I",
The same holds
true
for
the
bacxslash
and
open-parenthesis commands
used
~ith
the period symbol.
. InS
m •. P
Search from the current location
to
the
address "n plus offset".
Display
locations"m plus offset" to the
current location.
21. 4
ET~or
Messages
The following messages can be
displayed
by
the
PATCH
command.
The
standard error messages that can be displaqed
by all commands are not listed here.
WHAT?
SYNTAX ERROR
The command issued in response to the PATCH input
prompt
C»
was
not
recognized.
A
new input
prompt is displayed.
The
command
issued in response to the PATCH input
prompt
C»
was
recognizedi
however,
it
was
parameterized illegally.
A new input
prompt
is
displayed,
The command has not been processed.
~
Page
21-16
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