📄 macros.htm

📁 一份51的编译程序,dos版本的. 英文名字MCS-51 Microcontroller Family Macro Assembler

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<STRONG><U>III.11 Macro Processing</U></STRONG>
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Macros allow to combine basic assembler instructions to &quot;super commands&quot;.
For this, macros are defined as blocks of code, which can be used in a
program, wherever it is desired.<BR>
However, an advanced macro design with parameters, local symbols and macro
operators, combined with conditional assembly, goes far beyond this basic
functionality!<BR>
With only five keywords (MACRO, REPT, ENDM, EXITM, LOCAL) and some control
characters the <NOBR>ASEM-51</NOBR> macro processor provides a variety of powerful
tools. These five meta instructions are not part of the Intel <NOBR>MCS-51</NOBR>
assembly language, but overlay it, as already known from conditional assembly.<BR>
There are two sorts of macros: callable macros and repeat blocks.
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<OL TYPE=1>
<LI><A HREF="simple.htm">Simple Callable Macros</A></LI>
<LI><A HREF="params.htm">Macro Parameters</A></LI>
<LI><A HREF="repeat.htm">Repeat Macros</A></LI>
<LI><A HREF="local.htm">Local Symbols</A></LI>
<LI><A HREF="operator.htm">Macro Operators</A></LI>
<LI><A HREF="exitm.htm">Premature End of a Macro Expansion</A></LI>
<LI><A HREF="nestcall.htm">Nested and Recursive Macro Calls</A></LI>
<LI><A HREF="nestdefs.htm">Nested Macro Definitions</A></LI>
<LI><A HREF="macrolst.htm">Representation in the List File</A></LI>
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