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6502bench/docs/sgtutorial/moving-around.html

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<title>Moving Around - SourceGen Tutorial</title>
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6502bench
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<li id="sidenav-using-sourcegen"><a href="using-sourcegen.html">Using SourceGen</a>
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<li id="sidenav-simple-edits"><a href="simple-edits.html">Simple Edits</a></li>
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2021-08-03 21:48:40 +00:00
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<div id="main">
<h2>Moving Around</h2>
<div class="grid-container">
<div class="grid-item-image">
<img src="images/t1-fullscreen.png" alt="t1-fullscreen"/>
</div>
<div class="grid-item-text">
<p>The display is divided into five main areas:</p>
<ol>
<li>Code listing. Disassembled code and data is shown here.</li>
<li>References. Shows a list of the places in the file that
reference the currently selected line.</li>
<li>Notes. A list of notes in the project. Useful as bookmarks.</li>
<li>Symbols. All known symbols. The buttons at the top allow you
to filter out symbol types that you're not interested in.</li>
<li>Info. Information about the selected line. For code, this
will have a summary of the instruction.</li>
</ol>
</div>
</div>
<div class="grid-container">
<div class="grid-item-text">
<p>The center code list window is divided into rows, one per line of disassembled
code or data. This is a standard "list view" control, so you can select a
row by left-clicking anywhere in it. Use <kbd class="key">Ctrl</kbd>+click
to toggle the selection on individual lines, and
<kbd class="key">Shift</kbd>+click to select a range of lines. You can move
the selection around with the up/down arrow keys and
<kbd class="key">PgUp</kbd>/<kbd class="key">PgDn</kbd>. Scroll the window
with the mouse wheel, or by dragging the scroll bar thumb.</p>
<p>Each row is divided into nine columns. You can adjust the column
widths by clicking and dragging the column dividers in the header</p>
</div>
</div>
<div class="grid-container">
<div class="grid-item-image">
<img src="images/t1-all-columns.png" alt="t1-all-columns"/>
</div>
<div class="grid-item-text">
<p>The columns on the right side of the window are similar to
what you'd find in assembly source code: label, opcode, operand,
comment. The columns on the left are what you'd find in a disassembly
(file offset, address, raw bytes), plus some information about
processor status flags and line attributes that may or may not be
useful to you. If you find any of these distracting, collapse the
column. (Many of the screen shots captured here will omit the
"Attr" column for the sake of compactness.)</p>
</div>
</div>
<div class="grid-container">
<div class="grid-item-image">
<img src="images/t1-click-1002.png" alt="t1-click-1002"/>
</div>
<div class="grid-item-text">
<p>Click on the fourth line down, which has address 1002. The
line has a label, "L1002", and is performing an indexed load from
L1017. Both of these labels were automatically generated, and are
named for the address at which they appear. When you clicked on
the line, a few things happened:</p>
<ul>
<li>The line was highlighted in the system selection color (usually
blue).</li>
<li>Address 1017 and label L1017 were highlighted. When you select
a line with an operand that targets an in-file address, the target
address is highlighted.</li>
<li>An entry appeared in the References window. This tells you that the
only reference to L1002 is a branch from address $100B.</li>
<li>The Info window filled with a bunch of text that describes the
line format and some details about the LDA instruction.</li>
</ul>
<p>Click some other lines, such as address $100B and $1014. Note how the
highlights and contents of other windows change.</p>
</div>
</div>
<div class="grid-container">
<div class="grid-item-image">
<img src="images/t1-click-1017.png" alt="t1-click-1017"/>
</div>
<div class="grid-item-text">
<p>Click on L1002 again, then double-click on the opcode ("LDA"). The
selection jumps to L1017. When an operand references an in-file address,
double-clicking on the opcode will take you to it. (Double-clicking on
the operand itself opens a format editor; more on that later.)</p>
<p>With line L1017 selected, double-click on the line that appears in the
References window. Note the selection jumps to L1002. You can immediately
jump to any reference.</p>
</div>
</div>
<div class="grid-container">
<div class="grid-item-image">
<img src="images/t1-symbol-filters.png" alt="t1-symbol-filters"/>
</div>
<div class="grid-item-text">
<p>At the top of the Symbols window on the right side of the screen is a
row of buttons. Make sure "Auto" and "Addr" are selected. You should see
three labels in the window (L1002, L1014, L1017). Double-click on "L1014"
in the Symbols list. The selection jumps to the appropriate line.</p>
</div>
</div>
<div class="grid-container">
<div class="grid-item-text">
<p>Select Navigate &gt; Find. Type "hello", and hit Enter. The selection will
move to address $100E, which is a string that says "hello!". You can use
Navigate &gt; Find Next to try to find the next occurrence (there isn't one). You
can search for any text that appears in the rightmost columns (label, opcode,
operand, comment).</p>
</div>
</div>
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<div class="grid-item-image">
<img src="images/t1-goto-box.png" alt="t1-goto-box"/>
</div>
<div class="grid-item-text">
<p>Select Navigate &gt; Go To. You can enter a label, address, or file offset.
Enter "100b" to set the selection to the line at address $100B.</p>
</div>
</div>
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<div class="grid-item-image">
<img src="images/t1-toolbar.png" alt="t1-toolbar"/>
</div>
<div class="grid-item-text">
<p>Near the top-left of the SourceGen window is a set of toolbar icons.
Click the curly left-pointing arrow, and watch the selection move. Click
it again. Then click the curly right-arrow a couple of times. Whenever
you jump around in the file by using the Go To feature, or by double-clicking
on opcodes or lines in the side windows, the locations are added to a
navigation history. The arrows let you move forward and backward
through it.</p>
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