Mercurial > hg > index.cgi
view docs/manual/x817.html @ 556:928c033c0cd0
Allow MOD directive to accept only the standard base header parameters
There are cases where only the standard OS9 module header fields are to be
provided. This could be, for instance, in the case of a nonstandard user
type module. So allow the execution offset and data size fields to be
omitted entirely and handle the module length correctly as well.
author | William Astle <lost@l-w.ca> |
---|---|
date | Fri, 08 Sep 2023 00:32:40 -0600 |
parents | 1faf14de9d04 |
children |
line wrap: on
line source
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Convenience Instructions</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="LW Tool Chain" HREF="index.html"><LINK REL="UP" TITLE="LWASM" HREF="c62.html"><LINK REL="PREVIOUS" TITLE="Assembler Modes and Pragmas" HREF="x670.html"><LINK REL="NEXT" TITLE="Cycle Counts" HREF="x822.html"></HEAD ><BODY CLASS="SECTION" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >LW Tool Chain</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="x670.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 3. LWASM</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="x822.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECTION" ><H1 CLASS="SECTION" ><A NAME="CONVINST" >3.11. Convenience Instructions</A ></H1 ><P > Similar to the 6800 compatibility instructions (pragma 6800compat) these pragma 6809conv and pragma 6309conv enable convenience extensions to the 6809 and 6309 instruction set. Originally intended for compatibility with the MACRO-80c assembler, these have proven useful in large codebases that target both the 6809 and the 6309.</P ><P > The 6809 extensions are straightforward with the exception of "TSTD" which assembles as "STD -2,S". A benefit of using these is they will "just work" and take on their 6309 equivalent when you enable 6309 assembly mode. Supported instructions: ASRD, CLRD, COMD, LSLD, LSRD, NEGD, TSTD.</P ><P > 6309 extensions are based on common patterns described by Chris Burke and Darren Atkinson in their 6309 documentation and include the following instructions: ASRQ, CLRQ, COMQ, LSLE, LSLF, LSLQ, LSRQ, NEGE, NEGF, NEGW, NEGQ, TSTQ.</P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="x670.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="x822.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Assembler Modes and Pragmas</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="c62.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Cycle Counts</TD ></TR ></TABLE ></DIV ></BODY ></HTML >