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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- ASEM-51 V1.3 Assembler --><HTML><HEAD><TITLE>ASEM-51 V1.3 Assembler</TITLE></HEAD><BODY BACKGROUND="spiral.gif" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#990099" ALINK="#FF0000"><TABLE WIDTH="98%"><TR><TD WIDTH=60 VALIGN=BOTTOM NOWRAP><IMG SRC="transp.gif" ALT="" WIDTH=60 HEIGHT=20></TD><TD><!-- Ab hier Seitentext: --><P><BIG><BR><STRONG><U>I.2 Assembler</U></STRONG></BIG></P><P><BIG>With only five new keywords (MACRO, REPT, ENDM, EXITM, LOCAL) and someadditional control characters, <NOBR>ASEM-51</NOBR> <NOBR>version 1.3</NOBR>introduces a full-blown macro processing! It is possible to define named andrepeated macro blocks.Substitution of formal parameters is implemented as well as local symbols.Macro calls and definitions can be nested to any depth.<BR>Conditional assembly has been extended with the new IFN, IFB, IFNB, ELSEIF,ELSEIFN, ELSEIFDEF, ELSEIFNDEF, ELSEIFB, and ELSEIFNB meta instructions.<BR>The new control statements $GEN, $NOGEN, $GENONLY, $COND, $NOCOND, $CONDONLY,$SAVE, and $RESTORE allow refined listing options for macro expansion andconditional assembly. $MACRO and $NOMACRO allow or suppress macro expansion.</BIG></P><P><BIG>The <NOBR>/OMF-51</NOBR> command line option has been introduced for the DOS and Windowsimplementations to generate absolute <NOBR>OMF-51</NOBR> modules instead of <NOBR>Intel-HEX</NOBR>files. The Linux implementation recognizes the <NOBR>--omf-51</NOBR> (or -o) optionrespectively. It is also possible to include debug information with the$DEBUG assembler control.</BIG></P><P><BIG>The environment variable ASEM51INC has been introduced on all platforms tospecify a search path for include files.</BIG></P><P><BIG>The new $NOBUILTIN control suppresses predefined symbols (SFR) in the symboltable or cross-reference listing, while user-defined symbols are still listed.</BIG></P><P><BIG>The new $ERROR and $WARNING controls allow a more secure configurationmanagement of application programs.</BIG></P><P><BIG>For identification of the assembler and its version number, the followingpredefined symbols of the type NUMBER have been introduced:</BIG></P><P><BLOCKQUOTE><TABLE CELLPADDING=4><TR><TD><BIG><CODE>??ASEM_51</CODE></BIG></TD> <TD ALIGN=CENTER> = </TD> <TD><BIG><CODE>8051H</CODE></BIG></TD> <TD WIDTH=50 NOWRAP> </TD> <TD NOWRAP><BIG>ASEM-51</BIG></TD></TR><TR><TD><BIG><CODE>??VERSION</CODE></BIG></TD> <TD ALIGN=CENTER> = </TD> <TD><BIG><CODE>0130H</CODE></BIG></TD> <TD WIDTH=50 NOWRAP> </TD> <TD NOWRAP><BIG>version 1.3</BIG></TD></TR></TABLE></BLOCKQUOTE></P><P><BIG>To improve compatibility with the Intel assembler, more than one assemblercontrol is allowed in a control line now, e.g.:<BR><BR><CODE>$ NOMOD51 INCLUDE(80C517.MCU)</CODE></BIG></P><P><BIG>Include files may now be nested to any depth!</BIG></P><P><BIG>EQU and SET can now be used to define symbols not only for numericalconstants, but also for registers A and R0 thru R7.</BIG></P><!-- Seitentext Ende --><P><BR><BR><CENTER><TABLE WIDTH="70%"><TR><TH><A HREF="release.htm"><IMG SRC="home.gif" ALT="[contents]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH> <TH><A HREF="releas31.htm"><IMG SRC="up.gif" ALT="[up]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH> <TH><A HREF="relea311.htm"><IMG SRC="back.gif" ALT="[back]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH> <TH><A HREF="relea313.htm"><IMG SRC="next.gif" ALT="[next]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH></TR></TABLE></CENTER></P></TD></TR></TABLE></BODY></HTML>⌨️ 快捷键说明
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