The directive .set mips3d makes the assembler accept instructions
from the MIPS-3D Application Specific Extension from that point on
in the assembly. The .set nomips3d directive prevents MIPS-3D
instructions from being accepted.
The directive .set smartmips makes the assembler accept
instructions from the SmartMIPS Application Specific Extension to the
MIPS32 isa from that point on in the assembly. The
.set nosmartmips directive prevents SmartMIPS instructions from
being accepted.
The directive .set mdmx makes the assembler accept instructions
from the MDMX Application Specific Extension from that point on
in the assembly. The .set nomdmx directive prevents MDMX
instructions from being accepted.
The directive .set dsp makes the assembler accept instructions
from the DSP Release 1 Application Specific Extension from that point
on in the assembly. The .set nodsp directive prevents DSP
Release 1 instructions from being accepted.
The directive .set dspr2 makes the assembler accept instructions
from the DSP Release 2 Application Specific Extension from that point
on in the assembly. This dirctive implies .set dsp. The
.set nodspr2 directive prevents DSP Release 2 instructions from
being accepted.
The directive .set mt makes the assembler accept instructions
from the MT Application Specific Extension from that point on
in the assembly. The .set nomt directive prevents MT
instructions from being accepted.
Traditional mips assemblers do not support these directives.