TMS320F datasheet(113/389 Pages) TI

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How To Use the Instruction Descriptions

7-13

Assembly Language Instructions

[, x]

Operand x is optional.

Example:

For the syntax

ADD

dma, [, shift]

you must supply

dma, as in the instruction:

ADD 7h

and you have the option of adding a

shift value,

as in the instruction:

ADD 7h, 5

[, x1 [, x2]]

Operands x1 and x2 are optional, but you cannot include x2

without also including x1.

Example:

For the syntax

ADD

ind, [, shift [, ARn]]

you must supply

ind, as in the instruction:

ADD *+

You have the option of including

shift,

as in the instruction:

ADD *+, 5

If you wish to include AR

n, you must also

include

shift, as in:

ADD *+, 0, AR2

The # symbol is a prefix for constants used in immediate

addressing. For short- or long- immediate operands, it is

used in instructions where there is ambiguity with other

addressing modes.

Example:

RPT #15

uses short immediate addressing. It

causes the next instruction to be repeated

16 times. But RPT 15 uses direct addressing.

The number of times the next instruction

repeats is determined by a value stored in

memory.

Finally, consider this code example:

MoveData

BLDD

DAT5, #310h

;move data at address

;referenced by DAT5 to address

;310h.

Note the optional MoveData label is used as a reference in front of the instruc-

tion mnemonic. Place labels either before the instruction mnemonic on the

same line or on the preceding line in the first column. (Be sure there are no

spaces in your labels.) An optional comment field can conclude the syntax

expression. At least one space is required between fields (label, mnemonic,

operand, and comment).

TMS320F Datasheet(PDF) 113 Page - Texas Instruments

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