{ * *+ *– }
This provides three choices: *, *+, or *–.

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:

-C: 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:

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:

iv

Page 4
Image 4
Texas Instruments MSP50C6xx Here is a sample program listing, Csr -a /user/ti/simuboard/utilities, Notational Conventions