Assembler Directives - OPT

OPT | The OPT directive is used to set assemblers options from within the source file. The OPT directive is followed by one of the following options:

> MEX | Macro EXpand. The following macro calls will be expanded by the assembler.
> NOMEX | No Macro EXpand. The following macro calls will NOT be expanded by the assembler.
> SEX | Structured EXpand. The following structured assembly statements will be expanded by the assembler.
> NOSEX | No Structured EXpand. The following structured assembly statements will NOT be expanded by the assembler.
> WAR | Enables display of warning messages during assembly.
> NOWAR | Disables display of warning messages during assembly.
> BIT | Enables assembly of bit field instructions. Only 68000 addressing modes are supported. Adds *[sim68k]bitfield to .L68 file which automatically enables bit field support in Sim68K. Note! There is not a matching NOBIT option because there is no way to selectively disable bit field support in Sim68K during program execution.

OPT MEX
. macros expanded in this code
.
OPT NOMEX
. macros not expanded in this code