Arm VERSION 1.2 Manuel d'utilisateur télécharger pdf (Page 314)

100

101

Directives Reference

7.4.5 WHILE and WEND

The

WHILE

directive starts a sequence of instructions or directives that are to be

assembled repeatedly. The sequence is terminated with a

WEND

directive.

Syntax

WHILE logical-expression

code

WEND

where:

logical-expression

is an expression that can evaluate to either

{TRUE}

{FALSE}

(see Logical

expressions on page 3-23).

Usage

Use the

WHILE

directive, together with the

WEND

directive, to assemble a sequence of

instructions a number of times. The number of repetitions can be zero.

You can use

IF...ENDIF

conditions within

WHILE...WEND

loops.

WHILE...WEND

loops can be nested (see Nesting directives on page 7-26).

Example

count SETA 1 ; you are not restricted to

WHILE count <= 4 ; such simple conditions

count SETA count+1 ; In this case,

; code ; this code will be

; code ; repeated four times

WEND

1 2 ... 309 310 311 312 313 314 315 316 317 318 319 ... 359 360

Commentaires sur ces manuels

Pas de commentaire

Arm VERSION 1.2 Manuel d'utilisateur Page 314

Commentaires sur ces manuels