Panasonic MN1030 13 dd, Label Operation Operand Name Expression, expression, 00000000 Dd0

Chapter 9 Writing Machine Language Instructions and Directive Statements

9.4.13 dd

Syntax

label	operation	operand
[name]	dd	expression(, expression)...

Functional description

This directive is used to define 32-bit constants in a memory area. The 32-bit constant specified by the operand will be stored at the location of the statement specifying this directive.

When a name is coded for the label, the assembler will assign the current location counter value to that name.

Operand coding rules

The operands are delimited with commas(,). Any number of operands can be coded.

When the specified data has fewer than 24 bits, those bits will fill the lower bits and the upper bits will be padded with zeros.

Usage example

Below is an example use of the dw directive.

			dd.LST	Page 1
	*** PanaX Series MN1030 Cross Assembler ***
Loc	Object	Line	Source
		1		global	dd0, dd1, g_dd0
		2	;
		3	_DATA	section	DATA, PUBLIC, 4
00000000	78563412	4	dd0	dd	0x12345678
00000004	00000000	+5		dd	dd0
00000008	00000000	+6	dd1	dd	g_dd0

170 Writing Directive Statements