Zilog ZUSBOPTS Manuale Utente Pagina 280

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Source Language Syntax UM017105-0511
252
Zilog Developer Studio II – ZNEO™
User Manual
The space of the segment in which the label is defined.
The space provided in the EXTERN or XREF directive.
If no space is provided with the EXTERN or XREF directive, the space check is not per-
formed on the label.
Source Language Syntax
The syntax description that follows is offered here to outline the general assembler syntax.
It does not define assembly language instructions.
<source_line>
<if_statement>
[<Label_field>]<instruction_field><EOL>
[<Label_field>]<directive_field><EOL>
<Label_field><EOL>
<EOL>
<if_statement>
<if_section>
[<else_statement>]
ENDIF
<if_section> <if_conditional>
<code-body>
<if_conditional> IF<cond_expression>|
IFDEF<ident>|
IFSAME<string_const>,<string_const>|
IFMA<int_const>
<else_statement> ELSE <code_body>|
ELIF<cond_expression>
<code_body>
[<else_statement>]
<cond_expression> <exp
ression>|
<expression><relop><expression>
<relop> == | < | > | <= | => | !=
<code_body> <source_line>@
<label_field> <ident>:
<instruction_field> <mnemonic>[<operand>]@
<directive_field> <directive>
<mnemonic> valid instruction mnemonic
<operand>
<addressing_mode>
<expression>
<addressing_mode> valid instruction addressing mode
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