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Add support for 6800 compatibility instructions.
The occasional program uses the 6800 compatibility instructions since they
are actually specified by Motorola in at least some documentation. They
advertised the 6809 as source compatible with the 6800.
This mode is not enabled by default, however. It is my belief that receiving
an error when using a non-6809 instruction is more useful since it is
unlikely that much 6800 source code is being assembled for the 6809 these
days. Nevertheless, the --6809compat option is present for just those
purposes so one does not have to resort to using macros (which would work
equally well in most cases).
author | William Astle <lost@l-w.ca> |
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date | Tue, 15 Apr 2014 10:57:34 -0600 |
parents | b30091890d62 |
children | 682524a1f32f |
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104 ><P | 104 ><P |
105 >This will cause the assembler to accept the additional instructions available | 105 >This will cause the assembler to accept the additional instructions available |
106 on the 6309 processor. This is the default mode; this option is provided for | 106 on the 6309 processor. This is the default mode; this option is provided for |
107 completeness and to override preset command arguments.</P | 107 completeness and to override preset command arguments.</P |
108 ></DD | |
109 ><DT | |
110 ><CODE | |
111 CLASS="OPTION" | |
112 >--6800compat</CODE | |
113 ></DT | |
114 ><DD | |
115 ><P | |
116 >This is equivalent to <CODE | |
117 CLASS="OPTION" | |
118 >--pragma=6800compat</CODE | |
119 >.</P | |
120 ><P | |
121 >This will enable recognition of 6800 compatibility instructions.</P | |
108 ></DD | 122 ></DD |
109 ><DT | 123 ><DT |
110 ><CODE | 124 ><CODE |
111 CLASS="OPTION" | 125 CLASS="OPTION" |
112 >--6809</CODE | 126 >--6809</CODE |
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