mirror of
https://github.com/fadden/6502bench.git
synced 2024-09-11 20:54:37 +00:00
153 lines
6.7 KiB
HTML
153 lines
6.7 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<!-- START: /incl-head.html -->
|
|
<!-- common head elements -->
|
|
<meta charset="utf-8"/>
|
|
<meta name="viewport" content="width=device-width, initial-scale=1"/>
|
|
|
|
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"
|
|
integrity="sha384-vtXRMe3mGCbOeY7l30aIg8H9p3GdeSe4IFlP6G8JMa7o7lXvnz3GFKzPxzJdPfGK" crossorigin="anonymous"></script>
|
|
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css"/>
|
|
<link rel="stylesheet" href="../main.css"/>
|
|
<!-- END: /incl-head.html -->
|
|
|
|
<title>Suggestions - SourceGen Tutorial</title>
|
|
</head>
|
|
|
|
<body>
|
|
|
|
<!-- START: /incl-masthead.html -->
|
|
<div id="masthead">
|
|
<!--<div class="masthead-title" style="background-image: url('images/screenshot-mainwin.png');">-->
|
|
<div class="masthead-title">
|
|
6502bench
|
|
</div>
|
|
</div>
|
|
<!-- END: /incl-masthead.html -->
|
|
|
|
<!-- START: /incl-topnav.html active:#topnav-sgtutorial -->
|
|
<div id="topnav">
|
|
<!-- top navigation bar contents -->
|
|
<nav>
|
|
<a id="topnav-home" href=".././">HOME</a>
|
|
<a id="topnav-sgtutorial" class="active" href="../sgtutorial">SourceGen Tutorial</a>
|
|
<a id="topnav-menuicon" href="javascript:void(0);" class="icon" onclick="toggleSidenav()">
|
|
<i class="fa fa-bars"></i>
|
|
</a>
|
|
</nav>
|
|
<script>
|
|
// Sidenav toggle function.
|
|
//
|
|
// Use a jQuery function to toggle the sidenav bar. The initial state
|
|
// is undefined / inherited, so it will pop in and out as the screen
|
|
// resizes around the "large" breakpoint.
|
|
function toggleSidenav() {
|
|
$("#sidenav").toggle("fast");
|
|
}
|
|
</script>
|
|
</div>
|
|
<!-- END: /incl-topnav.html -->
|
|
|
|
<!-- START: incl-sidenav.html active:#sidenav-suggestions -->
|
|
<div id="sidenav">
|
|
<!-- side navigation bar contents -->
|
|
<ul>
|
|
<li id="sidenav-index"><a href="./">Introduction</a></li>
|
|
<li id="sidenav-about-disasm"><a href="about-disasm.html">About Disassembly</a></li>
|
|
<li id="sidenav-using-sourcegen"><a href="using-sourcegen.html">Using SourceGen</a>
|
|
<ul>
|
|
<li id="sidenav-moving-around"><a href="moving-around.html">Moving Around</a></li>
|
|
<li id="sidenav-simple-edits"><a href="simple-edits.html">Simple Edits</a></li>
|
|
<li id="sidenav-labels-symbols"><a href="labels-symbols.html">Labels & Symbols</a></li>
|
|
<li id="sidenav-editing-data"><a href="editing-data.html">Editing Data Operands</a></li>
|
|
<li id="sidenav-generating-code"><a href="generating-code.html">Generating Code</a></li>
|
|
</ul></li>
|
|
<li id="sidenav-digging-deeper"><a href="digging-deeper.html">Digging Deeper</a>
|
|
<ul>
|
|
<li id="sidenav-string-formatting"><a href="string-formatting.html">String Formatting</a></li>
|
|
<li id="sidenav-local-variables"><a href="local-variables.html">Local Variables</a></li>
|
|
<li id="sidenav-inline-data"><a href="inline-data.html">Inline Data</a></li>
|
|
<li id="sidenav-odds-ends"><a href="odds-ends.html">Odds & Ends</a></li>
|
|
</ul></li>
|
|
<li id="sidenav-advanced-topics"><a href="advanced-topics.html">Advanced Topics</a>
|
|
<ul>
|
|
<li id="sidenav-address-tables"><a href="address-tables.html">Address Tables</a></li>
|
|
<li id="sidenav-extension-scripts"><a href="extension-scripts.html">Extension Scripts</a></li>
|
|
<li id="sidenav-visualizations"><a href="visualizations.html">Visualizations</a></li>
|
|
</ul></li>
|
|
<li id="sidenav-suggestions" class="active"><a href="suggestions.html">Suggestions</a></li>
|
|
</ul>
|
|
</div>
|
|
<!-- END: incl-sidenav.html -->
|
|
|
|
<div id="main">
|
|
|
|
<h2>A Few Suggestions</h2>
|
|
|
|
<p>The hardest step in a journey is often the first. Here are a few
|
|
suggestions to help you on your way.</p>
|
|
|
|
<ul>
|
|
<li>Start with a small project (< 1KB). If you haven't
|
|
disassembled code before, this is the time to play with different
|
|
conventions, like whether to use MixedCase or underscore_separated
|
|
or SCREAMING_CAPS for labels.</li>
|
|
<li>Use the program thoroughly. Understand all of what it does.</li>
|
|
<li>Remember that SourceGen works by tracing through code from marked
|
|
start points, rather than treating everything as code and requiring you
|
|
to mark all the data items.
|
|
Begin each project by finding the code. Identify external
|
|
entry points, format tables of addresses, and find JSRs that are
|
|
followed by inline data. Use an extension script to handle the
|
|
inlines so you won't keep tripping over them. If parts of the program
|
|
are relocated to a different address, set the appropriate address
|
|
overrides.</li>
|
|
<ul>
|
|
<li>Code start tags are rarely needed, and code end tags are almost
|
|
never needed. You shouldn't have to spend a lot of time manually
|
|
tagging things. If a piece of code isn't being found, it's usually
|
|
best to figure out why the code that calls it isn't being found,
|
|
instead of trying to tag it and forge ahead from that point. It might
|
|
be dead code that's never called, or it might be called from a table
|
|
that you can format to add code entry tags for multiple addresses with
|
|
a single operation. Taking the time to find the table and format it
|
|
is faster than hand-formatting dozens of little handlers, and it's
|
|
something you'll need to do eventually anyway.</li>
|
|
</ul></li>
|
|
<li>Start with easily identifiable pieces. If a chunk of code is reading
|
|
from the keyboard, you can make reasonable guesses about the purpose of
|
|
the code that interacts with it.
|
|
The start of the program is often the hardest place to begin, because it
|
|
usually just initializes a bunch of stuff you haven't identified.</li>
|
|
<li>Expect to figure out little pieces. Use what you learn from these
|
|
to figure out other little pieces. It's a jigsaw puzzle, not a book.</li>
|
|
<li>Don't get discouraged if there's a ton of code that you can't make
|
|
sense of. It won't at first. Keep chipping away.</li>
|
|
<li>Read <a href="https://6502disassembly.com/on-disassembly.html">On Disassembly</a>
|
|
for additional thoughts.</li>
|
|
</ul>
|
|
|
|
</div> <!-- #main -->
|
|
|
|
<div id="prevnext">
|
|
<a href="visualizations.html" class="btn-previous">« Previous</a>
|
|
</div>
|
|
|
|
<!-- START: /incl-footer.html -->
|
|
<div id="footer">
|
|
<hr/>
|
|
<p>Copyright 2021 faddenSoft</p>
|
|
<!-- <p id="screen-size"></p>
|
|
<script>
|
|
var w = window.innerWidth;
|
|
var h = window.innerHeight;
|
|
var x = document.getElementById("screen-size");
|
|
x.innerHTML = "DEBUG: initial window size " + w + "x" + h;
|
|
</script> -->
|
|
</div>
|
|
<!-- END: /incl-footer.html -->
|
|
|
|
</body>
|
|
</html>
|