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<title>RGBASM(1)</title>
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<table class="head">
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<td class="head-ltitle">RGBASM(1)</td>
<td class="head-vol">General Commands Manual</td>
<td class="head-rtitle">RGBASM(1)</td>
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<div class="manual-text">
<h1 class="Sh" title="Sh" id="NAME"><a class="selflink" href="#NAME">NAME</a></h1>
<b class="Nm" title="Nm">rgbasm</b> — <span class="Nd" title="Nd">Game
Boy assembler</span>
<h1 class="Sh" title="Sh" id="SYNOPSIS"><a class="selflink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<table class="Nm">
<tr>
<td><b class="Nm" title="Nm">rgbasm</b></td>
<td>[<span class="Op"><b class="Fl" title="Fl">-EhLVvw</b></span>]
[<span class="Op"><b class="Fl" title="Fl">-b</b>
<var class="Ar" title="Ar">chars</var></span>]
[<span class="Op"><b class="Fl" title="Fl">-D</b>
<var class="Ar" title="Ar">name</var>[<span class="Op">=<var class="Ar" title="Ar">value</var></span>]</span>]
[<span class="Op"><b class="Fl" title="Fl">-g</b>
<var class="Ar" title="Ar">chars</var></span>]
[<span class="Op"><b class="Fl" title="Fl">-i</b>
<var class="Ar" title="Ar">path</var></span>]
[<span class="Op"><b class="Fl" title="Fl">-M</b>
<var class="Ar" title="Ar">dependfile</var></span>]
[<span class="Op"><b class="Fl" title="Fl">-o</b>
<var class="Ar" title="Ar">outfile</var></span>]
[<span class="Op"><b class="Fl" title="Fl">-p</b>
<var class="Ar" title="Ar">pad_value</var></span>]
<var class="Ar" title="Ar">file</var></td>
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<h1 class="Sh" title="Sh" id="DESCRIPTION"><a class="selflink" href="#DESCRIPTION">DESCRIPTION</a></h1>
The <b class="Nm" title="Nm">rgbasm</b> program creates an object file from an
assembly source file. Its arguments are as follows:
<dl class="Bl-tag">
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#b"><b class="Fl" title="Fl" id="b">-b</b></a>
<var class="Ar" title="Ar">chars</var></dt>
<dd class="It-tag">Change the two characters used for binary constants. The
defaults are 01.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#D"><b class="Fl" title="Fl" id="D">-D</b></a>
<var class="Ar" title="Ar">name</var>[<span class="Op">=<var class="Ar" title="Ar">value</var></span>]</dt>
<dd class="It-tag">Add string symbol to the compiled source code. This is
equivalent to <var class="Ar" title="Ar">name</var>
<b class="Cm" title="Cm">EQUS</b>
“<var class="Ar" title="Ar">value</var>” in code. If a value
is not specified, a value of 1 is given.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#E"><b class="Fl" title="Fl" id="E">-E</b></a></dt>
<dd class="It-tag">Export all labels, including unreferenced and local
labels.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#g"><b class="Fl" title="Fl" id="g">-g</b></a>
<var class="Ar" title="Ar">chars</var></dt>
<dd class="It-tag">Change the four characters used for binary constants. The
defaults are 0123.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#h"><b class="Fl" title="Fl" id="h">-h</b></a></dt>
<dd class="It-tag">By default, <b class="Nm" title="Nm">rgbasm</b> inserts a
‘nop’ instruction immediately after any ‘halt’
instruction. The <b class="Fl" title="Fl">-h</b> option disables this
behavior.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#i"><b class="Fl" title="Fl" id="i">-i</b></a>
<var class="Ar" title="Ar">path</var></dt>
<dd class="It-tag">Add an include path.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#L"><b class="Fl" title="Fl" id="L">-L</b></a></dt>
<dd class="It-tag">Disable the optimization that turns loads of the form
<b class="Sy" title="Sy">LD [$FF00+n8],A</b> into the opcode
<b class="Sy" title="Sy">LDH [$FF00+n8],A</b> in order to have full
control of the result in the final ROM.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#M"><b class="Fl" title="Fl" id="M">-M</b></a>
<var class="Ar" title="Ar">dependfile</var></dt>
<dd class="It-tag">Print <a class="Xr" title="Xr">make(1)</a> dependencies to
<var class="Ar" title="Ar">dependfile</var>.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#o"><b class="Fl" title="Fl" id="o">-o</b></a>
<var class="Ar" title="Ar">outfile</var></dt>
<dd class="It-tag">Write an object file to the given filename.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#p"><b class="Fl" title="Fl" id="p">-p</b></a>
<var class="Ar" title="Ar">pad_value</var></dt>
<dd class="It-tag">When padding an image, pad with this value. The default is
0x00.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#V"><b class="Fl" title="Fl" id="V">-V</b></a></dt>
<dd class="It-tag">Print the version of the program and exit.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#v"><b class="Fl" title="Fl" id="v">-v</b></a></dt>
<dd class="It-tag">Be verbose.</dd>
<dt class="It-tag"> </dt>
<dd class="It-tag"> </dd>
<dt class="It-tag"><a class="selflink" href="#w"><b class="Fl" title="Fl" id="w">-w</b></a></dt>
<dd class="It-tag">Disable warning output.</dd>
</dl>
<h1 class="Sh" title="Sh" id="EXAMPLES"><a class="selflink" href="#EXAMPLES">EXAMPLES</a></h1>
Assembling a basic source file is simple:
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<div class="Bd" style="margin-left: 5.00ex;">
<pre class="Li">
$ rgbasm -o bar.o foo.asm
</pre>
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<div class="Pp"></div>
The resulting object file is not yet a usable ROM image — it must first
be run through <a class="Xr" title="Xr">rgblink(1)</a> and
<a class="Xr" title="Xr">rgbfix(1)</a>.
<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="selflink" href="#SEE_ALSO">SEE
ALSO</a></h1>
<a class="Xr" title="Xr">rgbasm(5)</a>, <a class="Xr" title="Xr">rgbfix(1)</a>,
<a class="Xr" title="Xr">rgblink(1)</a>,
<a class="Xr" title="Xr">rgbds(5)</a>, <a class="Xr" title="Xr">rgbds(7)</a>,
<a class="Xr" title="Xr">gbz80(7)</a>
<h1 class="Sh" title="Sh" id="HISTORY"><a class="selflink" href="#HISTORY">HISTORY</a></h1>
<b class="Nm" title="Nm">rgbasm</b> was originally written by Carsten
Sørensen as part of the ASMotor package, and was later packaged in
RGBDS by Justin Lloyd. It is now maintained by a number of contributors at
<a class="Lk" title="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.</div>
<table class="foot">
<tr>
<td class="foot-date">February 24, 2018</td>
<td class="foot-os">RGBDS Manual</td>
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