Define Storage. Freescale Semiconductor sc100

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SC_Assem.book Page 111 Thursday, September 23, 2004 10:44 AM

Assembler Directives

Descriptions string

Replacement string for the symbol.

Remarks

Upon encountering a macro definition, the assembler applies DEFINE-directive translations. Later, when the assembler expands the macro, it applies the appropriate DEFINE-directive translations to the expansion.

You may not use a label with this directive.

Related Directives

GSET, SET, UNDEF

Example

DEFINE ARRAYSIZ '16*SAMPLSIZ'

SAMPLSIZ EQU 16

DS ARRAYSIZ

.

.

; This line transformed to

; DS 16*SAMPLSIZ

DS Define Storage

Reserves a block of bytes in memory, but does not initialize the block.

[label] DS numbytes

Parameters

label

Optional label that receives the value of the location counter at the start of directive processing.

numbytes

Number of bytes: an expression that evaluates to an integer greater than zero. This expression must not contain any forward references. The location counter advances by this number of bytes.

Related Directive

DSR

SC100 Assembler User Guide 111

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