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diff docs/manual/x805.html @ 478:a71206ed966c lwtools-4.16
Update manual in preparation for release
| author | William Astle <lost@l-w.ca> |
|---|---|
| date | Wed, 12 Dec 2018 20:00:59 -0700 |
| parents | cad5937314cb |
| children |
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--- a/docs/manual/x805.html Wed Dec 12 19:58:36 2018 -0700 +++ b/docs/manual/x805.html Wed Dec 12 20:00:59 2018 -0700 @@ -2,7 +2,7 @@ <HTML ><HEAD ><TITLE ->Cycle Counts</TITLE +>Convenience Instructions</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK @@ -13,11 +13,11 @@ TITLE="LWASM" HREF="c62.html"><LINK REL="PREVIOUS" -TITLE="Convenience Instructions" -HREF="x800.html"><LINK +TITLE="Assembler Modes and Pragmas" +HREF="x659.html"><LINK REL="NEXT" -TITLE="LWLINK" -HREF="c811.html"></HEAD +TITLE="Cycle Counts" +HREF="x810.html"></HEAD ><BODY CLASS="SECTION" BGCOLOR="#FFFFFF" @@ -45,7 +45,7 @@ ALIGN="left" VALIGN="bottom" ><A -HREF="x800.html" +HREF="x659.html" ACCESSKEY="P" >Prev</A ></TD @@ -59,7 +59,7 @@ ALIGN="right" VALIGN="bottom" ><A -HREF="c811.html" +HREF="x810.html" ACCESSKEY="N" >Next</A ></TD @@ -73,39 +73,25 @@ ><H1 CLASS="SECTION" ><A -NAME="AEN805" ->3.12. Cycle Counts</A +NAME="CONVINST" +>3.11. Convenience Instructions</A ></H1 ><P -> The following options for displaying cycle counts in listings are provided. -These options are enabled from pragmas on the command line or in the -assembly files themselves. For compatibility with other assemblers you can -use the "OPT" keyword in addition to "PRAGMA."</P -><PRE -CLASS="PROGRAMLISTING" ->opt c - enable cycle counts: [8] -opt cd - enable detailed cycle counts breaking down addressing modes: [5+3] -opt ct - show a running subtotal of cycles -opt cc - clear the running subtotal</PRE +> 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 assembler supports both 6809 as well as native-mode 6309 cycle counts. -In 6309 mode the counts are displayed in parenthesis instead of brackets. -In addition, some operations have a variable cycle count. In this case a -"+?" is displayed to alert the reader. Sample output is shown below.</P -><PRE -CLASS="PROGRAMLISTING" ->266f 7d25e2 (window.asm):00313 [7] 7 move tst putflg -2672 2602 (window.asm):00314 [5] 12 bne a@ -2674 1e13 (window.asm):00315 [8] 20 exg x,u -2676 0dd6 (window.asm):00316 [6] 26 a@ tst is6309 -2678 2618 (window.asm):00317 [5] 31 bne exit@ - (window.asm):00318 opt 6309 -267a 10860085 (window.asm):00319 (4) 35 b@ ldw #133 -267e 113813 (window.asm):00320 (6+?) 41 tfm x+,u+ -2681 30881b (window.asm):00321 (4+1) 46 leax 27,x -2684 33c81b (window.asm):00322 (4+1) 51 leau 27,u -2687 4a (window.asm):00323 (1) 52 deca -2688 26f0 (window.asm):00324 (5) 57 bne b@</PRE +> 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" @@ -123,7 +109,7 @@ ALIGN="left" VALIGN="top" ><A -HREF="x800.html" +HREF="x659.html" ACCESSKEY="P" >Prev</A ></TD @@ -141,7 +127,7 @@ ALIGN="right" VALIGN="top" ><A -HREF="c811.html" +HREF="x810.html" ACCESSKEY="N" >Next</A ></TD @@ -151,7 +137,7 @@ WIDTH="33%" ALIGN="left" VALIGN="top" ->Convenience Instructions</TD +>Assembler Modes and Pragmas</TD ><TD WIDTH="34%" ALIGN="center" @@ -165,7 +151,7 @@ WIDTH="33%" ALIGN="right" VALIGN="top" ->LWLINK</TD +>Cycle Counts</TD ></TR ></TABLE ></DIV