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<title>PDP-11-Options - Using as</title>
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<link rel="up" href="PDP_002d11_002dDependent.html#PDP_002d11_002dDependent" title="PDP-11-Dependent">
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<link rel="next" href="PDP_002d11_002dPseudos.html#PDP_002d11_002dPseudos" title="PDP-11-Pseudos">
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<!--
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This file documents the GNU Assembler "as".
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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</head>
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<body>
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<div class="node">
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<a name="PDP-11-Options"></a>
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<a name="PDP_002d11_002dOptions"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="PDP_002d11_002dPseudos.html#PDP_002d11_002dPseudos">PDP-11-Pseudos</a>,
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Up: <a rel="up" accesskey="u" href="PDP_002d11_002dDependent.html#PDP_002d11_002dDependent">PDP-11-Dependent</a>
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<hr>
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</div>
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<h4 class="subsection">9.34.1 Options</h4>
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<p><a name="index-options-for-PDP_002d11-1856"></a>
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The PDP-11 version of <code>as</code> has a rich set of machine
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dependent options.
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<h5 class="subsubsection">9.34.1.1 Code Generation Options</h5>
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<a name="index-g_t_002dmpic-1857"></a>
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<a name="index-g_t_002dmno_002dpic-1858"></a>
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<dl><dt><code>-mpic | -mno-pic</code><dd>Generate position-independent (or position-dependent) code.
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<p>The default is to generate position-independent code.
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</dl>
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<h5 class="subsubsection">9.34.1.2 Instruction Set Extension Options</h5>
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<p>These options enables or disables the use of extensions over the base
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line instruction set as introduced by the first PDP-11 CPU: the KA11.
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Most options come in two variants: a <code>-m</code><var>extension</var> that
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enables <var>extension</var>, and a <code>-mno-</code><var>extension</var> that disables
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<var>extension</var>.
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<p>The default is to enable all extensions.
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<a name="index-g_t_002dmall-1859"></a>
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<a name="index-g_t_002dmall_002dextensions-1860"></a>
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<dl><dt><code>-mall | -mall-extensions</code><dd>Enable all instruction set extensions.
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<p><a name="index-g_t_002dmno_002dextensions-1861"></a><br><dt><code>-mno-extensions</code><dd>Disable all instruction set extensions.
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<p><a name="index-g_t_002dmcis-1862"></a><a name="index-g_t_002dmno_002dcis-1863"></a><br><dt><code>-mcis | -mno-cis</code><dd>Enable (or disable) the use of the commercial instruction set, which
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consists of these instructions: <code>ADDNI</code>, <code>ADDN</code>, <code>ADDPI</code>,
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<code>ADDP</code>, <code>ASHNI</code>, <code>ASHN</code>, <code>ASHPI</code>, <code>ASHP</code>,
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<code>CMPCI</code>, <code>CMPC</code>, <code>CMPNI</code>, <code>CMPN</code>, <code>CMPPI</code>,
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<code>CMPP</code>, <code>CVTLNI</code>, <code>CVTLN</code>, <code>CVTLPI</code>, <code>CVTLP</code>,
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<code>CVTNLI</code>, <code>CVTNL</code>, <code>CVTNPI</code>, <code>CVTNP</code>, <code>CVTPLI</code>,
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<code>CVTPL</code>, <code>CVTPNI</code>, <code>CVTPN</code>, <code>DIVPI</code>, <code>DIVP</code>,
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<code>L2DR</code>, <code>L3DR</code>, <code>LOCCI</code>, <code>LOCC</code>, <code>MATCI</code>,
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<code>MATC</code>, <code>MOVCI</code>, <code>MOVC</code>, <code>MOVRCI</code>, <code>MOVRC</code>,
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<code>MOVTCI</code>, <code>MOVTC</code>, <code>MULPI</code>, <code>MULP</code>, <code>SCANCI</code>,
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<code>SCANC</code>, <code>SKPCI</code>, <code>SKPC</code>, <code>SPANCI</code>, <code>SPANC</code>,
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<code>SUBNI</code>, <code>SUBN</code>, <code>SUBPI</code>, and <code>SUBP</code>.
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<p><a name="index-g_t_002dmcsm-1864"></a><a name="index-g_t_002dmno_002dcsm-1865"></a><br><dt><code>-mcsm | -mno-csm</code><dd>Enable (or disable) the use of the <code>CSM</code> instruction.
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<p><a name="index-g_t_002dmeis-1866"></a><a name="index-g_t_002dmno_002deis-1867"></a><br><dt><code>-meis | -mno-eis</code><dd>Enable (or disable) the use of the extended instruction set, which
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consists of these instructions: <code>ASHC</code>, <code>ASH</code>, <code>DIV</code>,
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<code>MARK</code>, <code>MUL</code>, <code>RTT</code>, <code>SOB</code> <code>SXT</code>, and
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<code>XOR</code>.
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<p><a name="index-g_t_002dmfis-1868"></a><a name="index-g_t_002dmno_002dfis-1869"></a><a name="index-g_t_002dmkev11-1870"></a><a name="index-g_t_002dmkev11-1871"></a><a name="index-g_t_002dmno_002dkev11-1872"></a><br><dt><code>-mfis | -mkev11</code><dt><code>-mno-fis | -mno-kev11</code><dd>Enable (or disable) the use of the KEV11 floating-point instructions:
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<code>FADD</code>, <code>FDIV</code>, <code>FMUL</code>, and <code>FSUB</code>.
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<p><a name="index-g_t_002dmfpp-1873"></a><a name="index-g_t_002dmno_002dfpp-1874"></a><a name="index-g_t_002dmfpu-1875"></a><a name="index-g_t_002dmno_002dfpu-1876"></a><a name="index-g_t_002dmfp_002d11-1877"></a><a name="index-g_t_002dmno_002dfp_002d11-1878"></a><br><dt><code>-mfpp | -mfpu | -mfp-11</code><dt><code>-mno-fpp | -mno-fpu | -mno-fp-11</code><dd>Enable (or disable) the use of FP-11 floating-point instructions:
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<code>ABSF</code>, <code>ADDF</code>, <code>CFCC</code>, <code>CLRF</code>, <code>CMPF</code>,
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<code>DIVF</code>, <code>LDCFF</code>, <code>LDCIF</code>, <code>LDEXP</code>, <code>LDF</code>,
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<code>LDFPS</code>, <code>MODF</code>, <code>MULF</code>, <code>NEGF</code>, <code>SETD</code>,
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<code>SETF</code>, <code>SETI</code>, <code>SETL</code>, <code>STCFF</code>, <code>STCFI</code>,
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<code>STEXP</code>, <code>STF</code>, <code>STFPS</code>, <code>STST</code>, <code>SUBF</code>, and
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<code>TSTF</code>.
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<p><a name="index-g_t_002dmlimited_002deis-1879"></a><a name="index-g_t_002dmno_002dlimited_002deis-1880"></a><br><dt><code>-mlimited-eis | -mno-limited-eis</code><dd>Enable (or disable) the use of the limited extended instruction set:
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<code>MARK</code>, <code>RTT</code>, <code>SOB</code>, <code>SXT</code>, and <code>XOR</code>.
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<p>The -mno-limited-eis options also implies -mno-eis.
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<p><a name="index-g_t_002dmmfpt-1881"></a><a name="index-g_t_002dmno_002dmfpt-1882"></a><br><dt><code>-mmfpt | -mno-mfpt</code><dd>Enable (or disable) the use of the <code>MFPT</code> instruction.
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<p><a name="index-g_t_002dmmutiproc-1883"></a><a name="index-g_t_002dmno_002dmutiproc-1884"></a><br><dt><code>-mmultiproc | -mno-multiproc</code><dd>Enable (or disable) the use of multiprocessor instructions: <code>TSTSET</code> and
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<code>WRTLCK</code>.
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<p><a name="index-g_t_002dmmxps-1885"></a><a name="index-g_t_002dmno_002dmxps-1886"></a><br><dt><code>-mmxps | -mno-mxps</code><dd>Enable (or disable) the use of the <code>MFPS</code> and <code>MTPS</code> instructions.
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<p><a name="index-g_t_002dmspl-1887"></a><a name="index-g_t_002dmno_002dspl-1888"></a><br><dt><code>-mspl | -mno-spl</code><dd>Enable (or disable) the use of the <code>SPL</code> instruction.
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<p><a name="index-g_t_002dmmicrocode-1889"></a><a name="index-g_t_002dmno_002dmicrocode-1890"></a>Enable (or disable) the use of the microcode instructions: <code>LDUB</code>,
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<code>MED</code>, and <code>XFC</code>.
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</dl>
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<h5 class="subsubsection">9.34.1.3 CPU Model Options</h5>
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<p>These options enable the instruction set extensions supported by a
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particular CPU, and disables all other extensions.
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<a name="index-g_t_002dmka11-1891"></a>
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<dl><dt><code>-mka11</code><dd>KA11 CPU. Base line instruction set only.
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<p><a name="index-g_t_002dmkb11-1892"></a><br><dt><code>-mkb11</code><dd>KB11 CPU. Enable extended instruction set and <code>SPL</code>.
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<p><a name="index-g_t_002dmkd11a-1893"></a><br><dt><code>-mkd11a</code><dd>KD11-A CPU. Enable limited extended instruction set.
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<p><a name="index-g_t_002dmkd11b-1894"></a><br><dt><code>-mkd11b</code><dd>KD11-B CPU. Base line instruction set only.
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<p><a name="index-g_t_002dmkd11d-1895"></a><br><dt><code>-mkd11d</code><dd>KD11-D CPU. Base line instruction set only.
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<p><a name="index-g_t_002dmkd11e-1896"></a><br><dt><code>-mkd11e</code><dd>KD11-E CPU. Enable extended instruction set, <code>MFPS</code>, and <code>MTPS</code>.
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<p><a name="index-g_t_002dmkd11f-1897"></a><a name="index-g_t_002dmkd11h-1898"></a><a name="index-g_t_002dmkd11q-1899"></a><br><dt><code>-mkd11f | -mkd11h | -mkd11q</code><dd>KD11-F, KD11-H, or KD11-Q CPU. Enable limited extended instruction set,
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<code>MFPS</code>, and <code>MTPS</code>.
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<p><a name="index-g_t_002dmkd11k-1900"></a><br><dt><code>-mkd11k</code><dd>KD11-K CPU. Enable extended instruction set, <code>LDUB</code>, <code>MED</code>,
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<code>MFPS</code>, <code>MFPT</code>, <code>MTPS</code>, and <code>XFC</code>.
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<p><a name="index-g_t_002dmkd11z-1901"></a><br><dt><code>-mkd11z</code><dd>KD11-Z CPU. Enable extended instruction set, <code>CSM</code>, <code>MFPS</code>,
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<code>MFPT</code>, <code>MTPS</code>, and <code>SPL</code>.
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<p><a name="index-g_t_002dmf11-1902"></a><br><dt><code>-mf11</code><dd>F11 CPU. Enable extended instruction set, <code>MFPS</code>, <code>MFPT</code>, and
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<code>MTPS</code>.
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<p><a name="index-g_t_002dmj11-1903"></a><br><dt><code>-mj11</code><dd>J11 CPU. Enable extended instruction set, <code>CSM</code>, <code>MFPS</code>,
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<code>MFPT</code>, <code>MTPS</code>, <code>SPL</code>, <code>TSTSET</code>, and <code>WRTLCK</code>.
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<p><a name="index-g_t_002dmt11-1904"></a><br><dt><code>-mt11</code><dd>T11 CPU. Enable limited extended instruction set, <code>MFPS</code>, and
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<code>MTPS</code>.
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</dl>
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<h5 class="subsubsection">9.34.1.4 Machine Model Options</h5>
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<p>These options enable the instruction set extensions supported by a
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particular machine model, and disables all other extensions.
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<a name="index-g_t_002dm11_002f03-1905"></a>
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<dl><dt><code>-m11/03</code><dd>Same as <code>-mkd11f</code>.
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<p><a name="index-g_t_002dm11_002f04-1906"></a><br><dt><code>-m11/04</code><dd>Same as <code>-mkd11d</code>.
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<p><a name="index-g_t_002dm11_002f05-1907"></a><a name="index-g_t_002dm11_002f10-1908"></a><br><dt><code>-m11/05 | -m11/10</code><dd>Same as <code>-mkd11b</code>.
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<p><a name="index-g_t_002dm11_002f15-1909"></a><a name="index-g_t_002dm11_002f20-1910"></a><br><dt><code>-m11/15 | -m11/20</code><dd>Same as <code>-mka11</code>.
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<p><a name="index-g_t_002dm11_002f21-1911"></a><br><dt><code>-m11/21</code><dd>Same as <code>-mt11</code>.
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<p><a name="index-g_t_002dm11_002f23-1912"></a><a name="index-g_t_002dm11_002f24-1913"></a><br><dt><code>-m11/23 | -m11/24</code><dd>Same as <code>-mf11</code>.
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<p><a name="index-g_t_002dm11_002f34-1914"></a><br><dt><code>-m11/34</code><dd>Same as <code>-mkd11e</code>.
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<p><a name="index-g_t_002dm11_002f34a-1915"></a><br><dt><code>-m11/34a</code><dd>Ame as <code>-mkd11e</code> <code>-mfpp</code>.
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<p><a name="index-g_t_002dm11_002f35-1916"></a><a name="index-g_t_002dm11_002f40-1917"></a><br><dt><code>-m11/35 | -m11/40</code><dd>Same as <code>-mkd11a</code>.
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<p><a name="index-g_t_002dm11_002f44-1918"></a><br><dt><code>-m11/44</code><dd>Same as <code>-mkd11z</code>.
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<p><a name="index-g_t_002dm11_002f45-1919"></a><a name="index-g_t_002dm11_002f50-1920"></a><a name="index-g_t_002dm11_002f55-1921"></a><a name="index-g_t_002dm11_002f70-1922"></a><br><dt><code>-m11/45 | -m11/50 | -m11/55 | -m11/70</code><dd>Same as <code>-mkb11</code>.
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<p><a name="index-g_t_002dm11_002f53-1923"></a><a name="index-g_t_002dm11_002f73-1924"></a><a name="index-g_t_002dm11_002f83-1925"></a><a name="index-g_t_002dm11_002f84-1926"></a><a name="index-g_t_002dm11_002f93-1927"></a><a name="index-g_t_002dm11_002f94-1928"></a><br><dt><code>-m11/53 | -m11/73 | -m11/83 | -m11/84 | -m11/93 | -m11/94</code><dd>Same as <code>-mj11</code>.
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<p><a name="index-g_t_002dm11_002f60-1929"></a><br><dt><code>-m11/60</code><dd>Same as <code>-mkd11k</code>.
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</dl>
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</body></html>
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