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>3.2. Dialects</A
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> LWASM supports all documented MC6809 instructions as defined by
Motorola.  By default, this does not include any MC6800 compatibility
instructions.  As of LWASM 4.11, those compatibility instructions can be
enabled using the <CODE
CLASS="PARAMETER"
>--6800compat</CODE
> option or the
<CODE
CLASS="PARAMETER"
>6800compat</CODE
> pragma.  It also supports all known HD6309
instructions.  While there is general agreement on the mnemonics for most
of the 6309 instructions, there is some variance with the block transfer
instructions.  TFM for all four variations seems to have gained the most
traction and, thus, this is the form that is recommended for LWASM.
However, it also supports COPY, COPY-, IMP, EXP, TFRP, TFRM, TFRS, and TFRR.
It further adds COPY+ as a synomym for COPY, IMPLODE for IMP, and EXPAND for
EXP.  </P
><P
>By default, LWASM accepts 6309 instructions. However, using the
<CODE
CLASS="PARAMETER"
>--6809</CODE
> parameter, you can cause it to throw errors on
6309 instructions instead.</P
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>The standard addressing mode specifiers are supported. These are the
hash sign ("#") for immediate mode, the less than sign ("&lt;") for forced
eight bit modes, and the greater than sign ("&gt;") for forced sixteen bit modes.</P
><P
>Additionally, LWASM supports using the asterisk ("*") to indicate
base page addressing. This should not be used in hand-written source code,
however, because it is non-standard and may or may not be present in future
versions of LWASM.</P
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author	William Astle <lost@l-w.ca>
date	Thu, 21 Dec 2023 22:16:12 -0700
parents	8c6c3363e18e
children