+@ifset PDP11
+
+For details about the PDP-11 machine dependent features options,
+see @ref{PDP-11-Options}.
+
+@table @gcctabopt
+@item -mpic | -mno-pic
+Generate position-independent (or position-dependent) code. The
+default is @option{-mpic}.
+
+@item -mall
+@itemx -mall-extensions
+Enable all instruction set extensions. This is the default.
+
+@item -mno-extensions
+Disable all instruction set extensions.
+
+@item -m@var{extension} | -mno-@var{extension}
+Enable (or disable) a particular instruction set extension.
+
+@item -m@var{cpu}
+Enable the instruction set extensions supported by a particular CPU, and
+disable all other extensions.
+
+@item -m@var{machine}
+Enable the instruction set extensions supported by a particular machine
+model, and disable all other extensions.
+@end table
+
+@end ifset
+
+@ifset PJ
+The following options are available when @value{AS} is configured for
+a picoJava processor.
+
+@table @gcctabopt
+
+@cindex PJ endianness
+@cindex endianness, PJ
+@cindex big endian output, PJ
+@item -mb
+Generate ``big endian'' format output.
+
+@cindex little endian output, PJ
+@item -ml
+Generate ``little endian'' format output.
+
+@end table
+@end ifset
+
+@ifset M68HC11
+The following options are available when @value{AS} is configured for the
+Motorola 68HC11 or 68HC12 series.
+
+@table @gcctabopt
+
+@item -m68hc11 | -m68hc12 | -m68hcs12
+Specify what processor is the target. The default is
+defined by the configuration option when building the assembler.
+
+@item -mshort
+Specify to use the 16-bit integer ABI.
+
+@item -mlong
+Specify to use the 32-bit integer ABI.
+
+@item -mshort-double
+Specify to use the 32-bit double ABI.
+
+@item -mlong-double
+Specify to use the 64-bit double ABI.
+
+@item --force-long-branchs
+Relative branches are turned into absolute ones. This concerns
+conditional branches, unconditional branches and branches to a
+sub routine.
+
+@item -S | --short-branchs
+Do not turn relative branchs into absolute ones
+when the offset is out of range.
+
+@item --strict-direct-mode
+Do not turn the direct addressing mode into extended addressing mode
+when the instruction does not support direct addressing mode.
+
+@item --print-insn-syntax
+Print the syntax of instruction in case of error.
+
+@item --print-opcodes
+print the list of instructions with syntax and then exit.
+
+@item --generate-example
+print an example of instruction for each possible instruction and then exit.
+This option is only useful for testing @command{@value{AS}}.
+
+@end table
+@end ifset
+