Panasonic MN1030 User Manual
Chapter 9 Writing Machine Language Instructions and Directive Statements
Writing Directive Statements 179
9.4.19 assign
Syntax
label
operation
operand
name
assign
expression
Functional description
This directive defines the name to be the value of the expression coded in the operand. When that name
is coded in the operand of machine language instructions or directive instructions, the assembler will
refer the name’s value.
Operand coding rules
The expression coded in the operand must result in the attribute abs (absolute).
Refer to Chapter 8, “Writing Source Statements”, section 8.7, “Expressions”, section 8.7.4, “Expression
Attributes”, regarding attributes of expression.
Names defined with the assign directive can be defined again with the assign directive.
Names defined with the assign directive cannot be declared external references or external declarations.
No memory ares is reserved when an assign directive statement is executed.
Usage examples
The example below is a use of the assign directive.
NOTE:
If a name defined with this directive is used, you must define the value before the
statement.
statement.
assign.lst Page 1
*** PanaX Series MN1030 Cross Assembler ***
Loc
Object
Line
Source
1
_TEXT
section
CODE, PUBLIC, 1
2
NUM
assign
0x01
00000000
8001
3
mov
NUM, D0
4
5
NUM
assign
0x02
00000002
8002
6
mov
NUM, D0