Zilog ZUSBOPTS Manual do Utilizador descarregar pdf (Página 265)

100

101

UM017105-0511 Directives

Zilog Developer Studio II – ZNEO™

User Manual

237

VAR

The VAR directive works similarly to an EQU directive except you are allowed to change

the value of the label. In the following example,

STRVAR is assigned three different values.

This would cause an error if

EQU was used instead of VAR.

Synonym

.VAR, SET, .SET

Syntax

Example

A 6 SEGMENT NEAR_DATA

A 7 ALIGN 2

000000FF A 8 STRVARVAR FFH

000000 FF A 9 DBSTRVAR

A 10 SEGMENT ROM_TEXT

000000 A 11 L__0:

000000 4641494C 4544 A 12 DB"FAILED"

000006 00 A 13 DB0

A 14 SEGMENT NEAR_DATA

A 15 ALIGN 2

00000000 A 16 STRVAR VAR L__0

A 17

000002 A 18 _fail_str:

000002 00 A 19 DBSTRVAR

A 20 SEGMENT ROM_TEXT

000007 A 21 L__1:

000007 50415353 4544 A 22 DB"PASSED"

00000D 00 A 23 DB0

00000007 A 24 STRVAR VAR L__1

A 25 SEGMENT NEAR_DATA

A 26 ALIGN 2

000004 A 27 _pass_str:

000004 07 A 28 DBSTRVAR

VECTOR

Initializes an interrupt or reset vector to a program address.

The CPU directive is used to determine the physical location of the interrupt vectors.

Syntax

<vector_directive> =>

VECTOR <vector name> = <expression>

1 2 ... 260 261 262 263 264 265 266 267 268 269 270 ... 519 520

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