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AAsm was an alternative variant of the assembler supplied with previous releases of this product. It has been removed from this product, but to ease porting source code written for AAsm, some limited support has been added to ObjAsm. This support for AAsm may be removed in future releases of Acorn Assembler.
To enable this support you must pass the new -ABSolute option to ObjAsm. There is no option on the Setup menu directly corresponding to this option; the best way to pass the option from the desktop is to include it in the Setup menu's Others option (see Specifying other command line options).
The new -ABSolute option makes ObjAsm accept AAsm source code. This option is provided to simplify the use of code originally developed using AAsm. Unlike AAsm, the output format produced is AOF, as for any ordinary assembly operation, and this must be linked by the linker as usual, in order to create an absolute image. However, the contents of the AOF file will be marked as having an absolute address (if either the ORG or LEADR directive is used), and the linker, given suitable options, can produce an image file equivalent to that previously generated directly by AAsm. The following changes to normal ObjAsm input syntax apply:
This change is important, since ObjAsm recognises directives before it does macro names.