Texas Instruments MSP50C6xx User Manual

Page 4

Notational Conventions

Here is a sample program listing:

0011 0005 0001 .field 1, 2

0012 0005 0003 .field 3, 4

0013 0005 0006 .field 6, 3

0014 0006 .even

Here is an example of a system prompt and a command that you might
enter:

csr –a /user/ti/simuboard/utilities

In syntax descriptions, the instruction, command, or directive is in a bold
typeface font and parameters are in an italic typeface. Portions of a syntax
that are in bold should be entered as shown; portions of a syntax that are
in italics describe the type of information that should be entered. Here is
an example of a directive syntax:

.asect

”section name”, address

.asect is the directive. This directive has two parameters, indicated by sec-
tion name and address. When you use .asect, the first parameter must be
an actual section name, enclosed in double quotes; the second parameter
must be an address.

Square brackets ( [ and ] ) identify an optional parameter. If you use an
optional parameter, you specify the information within the brackets; you
don’t enter the brackets themselves. Here’s an example of an instruction
that has an optional parameter:

LALK

16–bit constant [, shift]

The LALK instruction has two parameters. The first parameter, 16-bit con-
stant, is required. The second parameter, shift, is optional. As this syntax
shows, if you use the optional second parameter, you must precede it with
a comma.

Square brackets are also used as part of the pathname specification for
VMS pathnames; in this case, the brackets are actually part of the path-
name (they are not optional).

Braces ( { and } ) indicate a list. The symbol | (read as or) separates items
within the list. Here’s an example of a list:

{ * | *+ | *– }

This provides three choices:

, or

*–

Unless the list is enclosed in square brackets, you must choose one item
from the list.

Some directives can have a varying number of parameters. For example,
the .byte directive can have up to 100 parameters. The syntax for this di-
rective is: