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Merge branch 'master' of https://github.com/fadden/6502bench
This commit is contained in:
Andy McFadden
commit
0851746123
@ -9,7 +9,7 @@
|
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</head>
|
||||
|
||||
<body>
|
||||
<div id=content>
|
||||
<div id="content">
|
||||
<h1>6502bench SourceGen: Advanced Topics</h1>
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
|
||||
@ -263,7 +263,7 @@ not help you debug 6502 projects.</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div id=footer>
|
||||
<div id="footer">
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -9,7 +9,7 @@
|
||||
</head>
|
||||
|
||||
<body>
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||||
<div id=content>
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||||
<div id="content">
|
||||
<h1>6502bench SourceGen: Instruction and Data Analysis</h1>
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
|
||||
@ -137,22 +137,22 @@ the changes are made, the Anattrib array and other data structures are
|
||||
regenerated.</p>
|
||||
|
||||
<p>Data format editing can create some tricky situations. For example,
|
||||
suppose you have 8 bytes that have been formatted as two 32-bit words:
|
||||
suppose you have 8 bytes that have been formatted as two 32-bit words:</p>
|
||||
|
||||
<pre>
|
||||
1000: 68690074 .dd4 $74006968
|
||||
1004: 65737400 .dd4 $00747365
|
||||
</pre>
|
||||
|
||||
You realize these are null-terminated strings, select both words, and
|
||||
reformat them:
|
||||
<p>You realize these are null-terminated strings, select both words, and
|
||||
reformat them:</p>
|
||||
|
||||
<pre>
|
||||
1000: 686900 .zstr "hi"
|
||||
1003: 74657374+ .zstr "test"
|
||||
</pre>
|
||||
|
||||
Seems simple enough. Under the hood, SourceGen created three changes:
|
||||
<p>Seems simple enough. Under the hood, SourceGen created three changes:</p>
|
||||
<ol>
|
||||
<li>At offset +000000, replace the current format descriptor (4-byte
|
||||
numeric) with a 3-byte null-terminated string descriptor.</li>
|
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@ -176,21 +176,21 @@ for every instruction:</p>
|
||||
<ol>
|
||||
<li>Continue. Execution always continues at the next instruction.
|
||||
Examples: <code>LDA</code>, <code>STA</code>, <code>AND</code>,
|
||||
<code>NOP</code>.
|
||||
<code>NOP</code>.</li>
|
||||
<li>Don't continue. The next instruction to be executed can't be
|
||||
determined from the file data (unless you're disassembling the
|
||||
system ROM around the BRK vector).
|
||||
Examples: <code>RTS</code>, <code>BRK</code>.
|
||||
Examples: <code>RTS</code>, <code>BRK</code>.</li>
|
||||
<li>Branch always. The operand specifies the next instruction address.
|
||||
Examples: <code>JMP</code>, <code>BRA</code>, <code>BRL</code>.
|
||||
Examples: <code>JMP</code>, <code>BRA</code>, <code>BRL</code>.</li>
|
||||
<li>Branch sometimes. Execution may continue at the operand address,
|
||||
or may execute the following instruction. If we know the value of
|
||||
the flags in the processor status register, we can eliminate one
|
||||
possibility. Examples: <code>BCC</code>, <code>BEQ</code>,
|
||||
<code>BVS</code>.
|
||||
<code>BVS</code>.</li>
|
||||
<li>Call subroutine. Execution will continue at the operand address,
|
||||
and is expected to also continue at the following instruction.
|
||||
Examples: <code>JSR</code>, <code>JSL</code>.
|
||||
Examples: <code>JSR</code>, <code>JSL</code>.</li>
|
||||
</ol>
|
||||
|
||||
<p>Branch targets are added to a list. When the current run of instructions
|
||||
@ -247,10 +247,10 @@ override on the instruction following the PLP fixes things.)</p>
|
||||
<p>Some other things that the code analyzer can't recognize automatically:</p>
|
||||
<ul>
|
||||
<li>Jumping indirectly through an address outside the file, e.g.
|
||||
storing an address in zero-page memory and jumping through it.
|
||||
storing an address in zero-page memory and jumping through it.</li>
|
||||
<li>Jumping to an address by pushing the location onto the stack,
|
||||
then executing an <code>RTS</code>.
|
||||
<li>Self-modifying code, e.g. overwriting a <code>JMP</code> instruction.
|
||||
then executing an <code>RTS</code>.</li>
|
||||
<li>Self-modifying code, e.g. overwriting a <code>JMP</code> instruction.</li>
|
||||
</ul>
|
||||
<p>Sometimes the indirect jump targets are coming from a table of
|
||||
addresses in the file. If so, these can be formatted as addresses,
|
||||
@ -311,7 +311,7 @@ byte values.</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div id=footer>
|
||||
<div id="footer">
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -9,7 +9,7 @@
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div id=content>
|
||||
<div id="content">
|
||||
<h1>6502bench SourceGen: Code Generation & Assembly</h1>
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
|
||||
@ -65,7 +65,7 @@ will be shown with the detected version number. If the assembler
|
||||
executable isn't configured, "[latest version]" will be shown instead
|
||||
of a version number.</p>
|
||||
<p>The Settings button will take you directly to the assembler configuration
|
||||
tab in the application settings dialog.
|
||||
tab in the application settings dialog.</p>
|
||||
<p>Hit the Generate button to generate the source code into a file on disk.
|
||||
The file will use the project name, with the ".dis65" replaced by
|
||||
"_<assembler>.S".</p>
|
||||
@ -107,7 +107,7 @@ so any failure is an opportunity for improvement.</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div id=footer>
|
||||
<div id="footer">
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -9,7 +9,7 @@
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div id=content>
|
||||
<div id="content">
|
||||
<h1>6502bench SourceGen: Editors</h1>
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
|
||||
@ -92,7 +92,7 @@ to format. For example, to format two bytes as a 16-bit word, you must
|
||||
select both bytes in the editor. (If you click on the first item, then
|
||||
Shift+double-click on the operand field of the last item, you can do
|
||||
this very quickly.) The selection does not need to be contiguous: you
|
||||
can use Control+click to select scattered items.)
|
||||
can use Control+click to select scattered items.)</p>
|
||||
<p>If the range is discontiguous, or crosses a visual boundary
|
||||
such as a change in address, a user-specified label, or a long comment
|
||||
or note, the selection will be split into smaller regions. A message at the
|
||||
@ -247,7 +247,7 @@ marked as "constant" will not, though you can still specify them manually.</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div id=footer>
|
||||
<div id="footer">
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -9,7 +9,7 @@
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div id=content>
|
||||
<div id="content">
|
||||
<h1>6502bench SourceGen: End Notes</h1>
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
|
||||
@ -76,7 +76,7 @@ are solid enough to excuse the excesses.</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div id=footer>
|
||||
<div id="footer">
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -9,7 +9,7 @@
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div id=content>
|
||||
<div id="content">
|
||||
<h1>6502bench SourceGen</h1>
|
||||
<p>SourceGen is an interactive disassembler for 6502, 65C02, 65802,
|
||||
and 65816 code. The official web site is
|
||||
@ -20,31 +20,31 @@ and 65816 code. The official web site is
|
||||
|
||||
<h2>Contents</h2>
|
||||
<ul>
|
||||
<li><a href="intro.html">Overview</a></li>
|
||||
<li><a href="intro.html">Overview</a>
|
||||
<ul>
|
||||
<li><a href="intro.html#fundamental-concepts">Fundamental Concepts</a></li>
|
||||
<li><a href="intro.html#begin">About 6502 Code</a></li>
|
||||
<li><a href="intro.html#sgintro">How SourceGen Works</a></li>
|
||||
<li><a href="intro.html#sgintro">How SourceGen Works</a>
|
||||
<ul>
|
||||
<li><a href="intro.html#scripts">Extension Scripts</a></li>
|
||||
<li><a href="intro.html#hints">Analyzer Hints</a></li>
|
||||
</ul>
|
||||
</ul></li>
|
||||
<li><a href="intro.html#sgconcepts">SourceGen Concepts</a></li>
|
||||
<li><a href="intro.html#about-symbols">All About Symbols</a></li>
|
||||
<li><a href="intro.html#about-symbols">All About Symbols</a>
|
||||
<ul>
|
||||
<li><a href="intro.html#weak-refs">Weak References</a></li>
|
||||
<li><a href="intro.html#symbol-parts">Parts and Adjustments</a></li>
|
||||
<li><a href="intro.html#nearby-targets">Automatic Use of Nearby Targets</a></li>
|
||||
</ul>
|
||||
</ul></li>
|
||||
<li><a href="intro.html#width-disambiguation">Width Disambiguation</a></li>
|
||||
<li><a href="intro.html#pseudo-ops">Data and Directive Pseudo-Opcodes</a></li>
|
||||
</ul>
|
||||
</ul></li>
|
||||
|
||||
<li><a href="mainwin.html">Using SourceGen</a></li>
|
||||
<li><a href="mainwin.html">Using SourceGen</a>
|
||||
<ul>
|
||||
<li><a href="mainwin.html#starting-new">Starting a New Project</a></li>
|
||||
<li><a href="mainwin.html#opening">Opening an Existing Project</a></li>
|
||||
<li><a href="mainwin.html#working">Working With a Project</a></li>
|
||||
<li><a href="mainwin.html#working">Working With a Project</a>
|
||||
<ul>
|
||||
<li><a href="mainwin.html#code-list">Code List</a></li>
|
||||
<li><a href="mainwin.html#undo">Undo & Redo</a></li>
|
||||
@ -58,10 +58,10 @@ and 65816 code. The official web site is
|
||||
<li><a href="mainwin.html#toggle-format">Quick Format Toggle</a></li>
|
||||
<li><a href="mainwin.html#toggle-data">Toggle Data Scan</a></li>
|
||||
<li><a href="mainwin.html#clipboard">Copying to Clipboard</a></li>
|
||||
</ul>
|
||||
</ul>
|
||||
</ul></li>
|
||||
</ul></li>
|
||||
|
||||
<li><a href="editors.html">Editors</a></li>
|
||||
<li><a href="editors.html">Editors</a>
|
||||
<ul>
|
||||
<li><a href="editors.html#address">Edit Address</a></li>
|
||||
<li><a href="editors.html#flags">Edit Status Flags</a></li>
|
||||
@ -72,77 +72,77 @@ and 65816 code. The official web site is
|
||||
<li><a href="editors.html#long-comment">Edit Long Comment</a></li>
|
||||
<li><a href="editors.html#note">Edit Note</a></li>
|
||||
<li><a href="editors.html#project-symbol">Edit Project Symbol</a></li>
|
||||
</ul>
|
||||
</ul></li>
|
||||
|
||||
<li><a href="codegen.html">Code Generation & Assembly</a></li>
|
||||
<li><a href="codegen.html">Code Generation & Assembly</a>
|
||||
<ul>
|
||||
<li><a href="codegen.html#supported">Supported Assemblers</a></li>
|
||||
<li><a href="codegen.html#supported">Supported Assemblers</a>
|
||||
<ul>
|
||||
<li><a href="codegen.html#version">Version-Specific Code Generation</a></li>
|
||||
</ul>
|
||||
<li><a href="codegen.html#generate">Generating Source Code</a></li>
|
||||
</ul></li>
|
||||
<li><a href="codegen.html#generate">Generating Source Code</a>
|
||||
<ul>
|
||||
<li><a href="codegen.html#localizer">Label Localizer</a></li>
|
||||
</ul>
|
||||
</ul></li>
|
||||
<li><a href="codegen.html#assemble">Cross-Assembling Generated Code</a></li>
|
||||
</ul>
|
||||
</ul></li>
|
||||
|
||||
<li><a href="settings.html">Properties & Settings</a></li>
|
||||
<li><a href="settings.html">Properties & Settings</a>
|
||||
<ul>
|
||||
<li><a href="settings.html#app-settings">Application Settings</a></li>
|
||||
<li><a href="settings.html#app-settings">Application Settings</a>
|
||||
<ul>
|
||||
<li><a href="settings.html#appset-codeview">Code View</a></li>
|
||||
<li><a href="settings.html#appset-asmconfig">Asm Config</a></li>
|
||||
<li><a href="settings.html#appset-displayformat">Display Format</a></li>
|
||||
<li><a href="settings.html#appset-pseudoop">Pseudo-Op</a></li>
|
||||
</ul>
|
||||
<li><a href="settings.html#project-properties">Project Properties</a></li>
|
||||
</ul></li>
|
||||
<li><a href="settings.html#project-properties">Project Properties</a>
|
||||
<ul>
|
||||
<li><a href="settings.html#projprop-general">General</a></li>
|
||||
<li><a href="settings.html#projprop-projsym">Project Symbols</a></li>
|
||||
<li><a href="settings.html#projprop-symfiles">Symbol Files</a></li>
|
||||
<li><a href="settings.html#projprop-extscripts">Extension Scripts</a></li>
|
||||
</ul>
|
||||
</ul>
|
||||
</ul></li>
|
||||
</ul></li>
|
||||
|
||||
<li><a href="tools.html">Tools</a></li>
|
||||
<li><a href="tools.html">Tools</a>
|
||||
<ul>
|
||||
<li><a href="tools.html#hexdump">Hex Dump Viewer</a></li>
|
||||
<li><a href="tools.html#ascii-chart">ASCII Chart</a></li>
|
||||
</ul>
|
||||
</ul></li>
|
||||
|
||||
<li><a href="advanced.html">Advanced Topics</a></li>
|
||||
<li><a href="advanced.html">Advanced Topics</a>
|
||||
<ul>
|
||||
<li><a href="advanced.html#platform-symbols">Platform Symbol Files (.sym65)</a></li>
|
||||
<li><a href="advanced.html#extension-scripts">Extension Scripts</a></li>
|
||||
<li><a href="advanced.html#multi-bin">Working With Multiple Binaries</a></li>
|
||||
<li><a href="advanced.html#overlap">Overlapping Address Spaces</a></li>
|
||||
<li><a href="advanced.html#debug">Debug Menu Options</a></li>
|
||||
</ul>
|
||||
</ul></li>
|
||||
|
||||
<li><a href="analysis.html">Appendix: Instruction and Data Analysis</a></li>
|
||||
<li><a href="analysis.html">Appendix: Instruction and Data Analysis</a>
|
||||
<ul>
|
||||
<li><a href="analysis.html#analysis-process">Analysis Process</a></li>
|
||||
<li><a href="analysis.html#analysis-process">Analysis Process</a>
|
||||
<ul>
|
||||
<li><a href="analysis.html#auto-format">Automatic Formatting</a></li>
|
||||
<li><a href="analysis.html#undo-redo">Interaction With Undo/Redo</a></li>
|
||||
</ul>
|
||||
<li><a href="analysis.html#code-analysis">Code Analysis</a></li>
|
||||
</ul></li>
|
||||
<li><a href="analysis.html#code-analysis">Code Analysis</a>
|
||||
<ul>
|
||||
<li><a href="analysis.html#extension-scripts">Extension Scripts</a></li>
|
||||
</ul>
|
||||
</ul></li>
|
||||
<li><a href="analysis.html#data-analysis">Data Analysis</a></li>
|
||||
</ul>
|
||||
</ul></li>
|
||||
|
||||
<li><a href="end-notes.html">End Notes</a></li>
|
||||
<li><a href="end-notes.html">End Notes</a> </li>
|
||||
|
||||
<br/>
|
||||
|
||||
<li><a href="tutorials.html">Tutorials</a></li>
|
||||
<li><a href="tutorials.html">Tutorials</a>
|
||||
<ul>
|
||||
<li><a href="tutorials.html#basic-features">Basic Features</a></li>
|
||||
<li><a href="tutorials.html#advanced-features">Advanced Features</a></li>
|
||||
</ul>
|
||||
</ul></li>
|
||||
|
||||
</ul>
|
||||
|
||||
@ -150,8 +150,8 @@ and 65816 code. The official web site is
|
||||
|
||||
</div>
|
||||
|
||||
<div id=footer>
|
||||
<hr>
|
||||
<div id="footer">
|
||||
<hr/>
|
||||
<p>Copyright 2018 faddenSoft</p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -9,7 +9,7 @@
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div id=content>
|
||||
<div id="content">
|
||||
<h1>6502bench SourceGen: Intro</h1>
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
|
||||
@ -148,7 +148,7 @@ disassembly of the instruction stream will come out wrong.</p>
|
||||
|
||||
<p>SourceGen employs a partial emulation technique that traces the flow
|
||||
of execution. Most of what a given instruction does isn't important;
|
||||
only its effect on the flow of execution matters.
|
||||
only its effect on the flow of execution matters.</p>
|
||||
|
||||
<p>The code tracing has to start somewhere, so SourceGen uses "code entry
|
||||
point hints" to identify places where execution may begin. By default,
|
||||
@ -231,7 +231,7 @@ L1009 CLC
|
||||
assumes those are data. Further, the functions at those addresses may
|
||||
also be considered data unless some bit of code reachable from L1009
|
||||
calls into them. If you add a code hint to $1003 and $1006,
|
||||
you'll get better results:
|
||||
you'll get better results:</p>
|
||||
<pre>
|
||||
.ORG $1000
|
||||
JMP L1009
|
||||
@ -343,13 +343,13 @@ to add comments explaining it. SourceGen projects have three kinds of
|
||||
comments:</p>
|
||||
<ol>
|
||||
<li>End-of-line comments. As the name implies, these appear at the
|
||||
end of a line, to the right of the opcode or operand.
|
||||
end of a line, to the right of the opcode or operand.</li>
|
||||
<li>Long comments, also known as multi-line comments. These get a
|
||||
line all to themselves, and may span multiple lines.
|
||||
line all to themselves, and may span multiple lines.</li>
|
||||
<li>Notes. Like long comments, these get a line to themselves. Unlike
|
||||
long comments, these do not appear in generated assembly code. They
|
||||
are a way for you to leave notes to yourself, perhaps "don't forget
|
||||
to figure this out" or "this is the cool part".
|
||||
to figure this out" or "this is the cool part".</li>
|
||||
</ol>
|
||||
<p>Every file offset can have one of each.</p>
|
||||
|
||||
@ -372,9 +372,9 @@ different ways.</p>
|
||||
<p>The label syntax is restricted to a format that should be compatible
|
||||
with most assemblers:</p>
|
||||
<ul>
|
||||
<li>2-32 characters long.
|
||||
<li>Starts with a letter or underscore.
|
||||
<li>Comprised of ASCII letters, numbers, and the underscore.
|
||||
<li>2-32 characters long.</li>
|
||||
<li>Starts with a letter or underscore.</li>
|
||||
<li>Comprised of ASCII letters, numbers, and the underscore.</li>
|
||||
</ul>
|
||||
<p>Label comparisons are case-sensitive, as is customary for programming
|
||||
languages.</p>
|
||||
@ -442,7 +442,7 @@ symbol exists, the reference is used. If the symbol can't be found, the
|
||||
operand is formatted in hex instead.</p>
|
||||
|
||||
<p>It's important to know this when editing a project. Consider the
|
||||
following trivial chunk of code:
|
||||
following trivial chunk of code:</p>
|
||||
|
||||
<pre>
|
||||
1000: 4c0310 JMP $1003
|
||||
@ -596,7 +596,7 @@ L1012 .DD1 $00
|
||||
the code is actually setting up a single 24-bit address. For clarity,
|
||||
you'd like the output to reflect the fact that it's a single, multi-byte
|
||||
variable. So, if you set a label at $1010, SourceGen removes the
|
||||
nearby auto labels, and sets the numeric references to use your label:
|
||||
nearby auto labels, and sets the numeric references to use your label:</p>
|
||||
|
||||
<pre>
|
||||
.ORG $1000
|
||||
@ -684,7 +684,7 @@ represent hundreds of bytes and span multiple lines.</p>
|
||||
<li>.BULK - data packed in as compact a form as the assembler allows.
|
||||
Useful for chunks of graphics data.</li>
|
||||
<li>.FILL - a series of identical bytes. The operand
|
||||
is the byte count, followed by the byte value.
|
||||
is the byte count, followed by the byte value.</li>
|
||||
</ul>
|
||||
|
||||
<p>In addition, several pseudo-ops are defined for string constants:</p>
|
||||
@ -708,7 +708,7 @@ uses in the
|
||||
|
||||
</div>
|
||||
|
||||
<div id=footer>
|
||||
<div id="footer">
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -9,7 +9,7 @@
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div id=content>
|
||||
<div id="content">
|
||||
<h1>6502bench SourceGen: Main Window</h1>
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
|
||||
@ -68,11 +68,11 @@ most-recently-opened projects will be available.</p>
|
||||
<p>The main project window is divided into five areas:</p>
|
||||
<ol>
|
||||
<li>Center: the code list. If no project is open, this will instead
|
||||
have clickable links to open a new or existing project.
|
||||
<li>Top left: cross-reference list.
|
||||
<li>Bottom left: notes list.
|
||||
<li>Top right: symbols list.
|
||||
<li>Bottom right: info on selected line.
|
||||
have clickable links to open a new or existing project.</li>
|
||||
<li>Top left: cross-reference list.</li>
|
||||
<li>Bottom left: notes list.</li>
|
||||
<li>Top right: symbols list.</li>
|
||||
<li>Bottom right: info on selected line.</li>
|
||||
</ol>
|
||||
|
||||
<p>Most of the action takes place in the center code list.</p>
|
||||
@ -431,7 +431,7 @@ to put the data into individual cells.</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div id=footer>
|
||||
<div id="footer">
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -9,7 +9,7 @@
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div id=content>
|
||||
<div id="content">
|
||||
<h1>6502bench SourceGen: Properties & Settings</h1>
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
|
||||
@ -63,7 +63,7 @@ or the other.</p>
|
||||
<a href="mainwin.html#clipboard">copied to the clipboard</a>. The
|
||||
"Assembler Source" format includes the rightmost columns (label,
|
||||
opcode, operand, and comment), like assembly source code does. The
|
||||
"Disassembly" format adds the address and bytes on the left.
|
||||
"Disassembly" format adds the address and bytes on the left.</p>
|
||||
|
||||
|
||||
<h3><a name="appset-asmconfig">Asm Config</a></h3>
|
||||
@ -148,7 +148,7 @@ you later hit Cancel, but the changes are not applied immediately.</p>
|
||||
<p>The choice of CPU determines the set of available instructions, as
|
||||
well as cycle costs and register widths. There are many variations
|
||||
on the 6502, but from the perspective of a disassembler most can be
|
||||
treated as one of these three:
|
||||
treated as one of these three:</p>
|
||||
<ol>
|
||||
<li>MOS 6502. The original 8-bit instruction set.</li>
|
||||
<li>WDC W65C02S. Expanded the instruction set and smoothed
|
||||
@ -244,7 +244,7 @@ you will receive a warning.</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div id=footer>
|
||||
<div id="footer">
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -9,7 +9,7 @@
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div id=content>
|
||||
<div id="content">
|
||||
<h1>6502bench SourceGen: Tools</h1>
|
||||
|
||||
<h2><a name="hexdump">Hex Dump Viewer</a></h2>
|
||||
@ -59,7 +59,7 @@ ASCII.</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div id=footer>
|
||||
<div id="footer">
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -9,7 +9,7 @@
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div id=content>
|
||||
<div id="content">
|
||||
<h1>6502bench SourceGen: Tutorials</h1>
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
|
||||
@ -43,7 +43,7 @@ window will have some information about the data file, once we choose one.</p>
|
||||
open the Examples folder, then open the "Tutorial" folder. Select the
|
||||
file named "Tutorial1", and click "Open".</p>
|
||||
<p>The filename now appears in the bottom window, along with an indication
|
||||
of the file's size.
|
||||
of the file's size.</p>
|
||||
<p>Click OK to create the project.</p>
|
||||
|
||||
|
||||
@ -176,7 +176,7 @@ In the Edit Address dialog, type "2000", and hit Enter.)</p>
|
||||
|
||||
<p>Note the way the code list has changed. When you changed the address,
|
||||
the "JMP $2000" at L1014 found a home inside the bounds of the file, so
|
||||
the code tracer was able to find the instructions there.<p>
|
||||
the code tracer was able to find the instructions there.</p>
|
||||
<p>From the menu, select Edit > Undo. Notice how everything reverts to
|
||||
the way it was. Now, select Edit > Redo. You can undo any change you
|
||||
make to the project. (The undo history is <strong>not</strong> saved in
|
||||
@ -281,7 +281,7 @@ the "Address" radio button. Click "OK".</p>
|
||||
<p>We just told SourceGen that those 10 bytes are actually five numeric
|
||||
references. SourceGen determined that the addresses are contained in the
|
||||
file, and created labels for each of them. Labels only work if they're
|
||||
on their own line, so each string is now in a separate ".STR" statement.
|
||||
on their own line, so each string is now in a separate ".STR" statement.</p>
|
||||
|
||||
<p>Use File > Save (or hit Ctrl+S) to save your hard work.</p>
|
||||
|
||||
@ -329,7 +329,7 @@ and navigate to the Examples directory. In A2-Amper-fdraw, select
|
||||
<p>Not a lot to see here -- just half a dozen lines of loads and stores.
|
||||
This particular program interfaces with Applesoft BASIC, so we can make it
|
||||
a bit more meaningful by loading an additional platform
|
||||
symbol file. Select Edit > Project Properties, then the Symbol Files
|
||||
symbol file. Select Edit > Project Properties, then the Symbol Files
|
||||
tab. Click Add Symbol Files. The file browser starts in the RuntimeData
|
||||
directory. In the Apple folder, select <code>Applesoft.sym65</code>, and
|
||||
click Open. Click OK to close the project properties window.</p>
|
||||
@ -340,7 +340,7 @@ the filename -- so let's make that change. Double-click the initial .ORG
|
||||
statement, and change it from $2000 to $1d60. We can now see that $1d70
|
||||
starts right after this initial chunk of code.</p>
|
||||
|
||||
<p>Select the line with address $1d70, then Actions > Hint As Code Entry Point.
|
||||
<p>Select the line with address $1d70, then Actions > Hint As Code Entry Point.
|
||||
More code appears, but not much -- if you scroll down you'll see that most
|
||||
of the file is still data. The code at $1d70 searches through a table at
|
||||
$1d88 for a match with the contents of the accumulator. If it finds a match,
|
||||
@ -352,7 +352,7 @@ address minus one.</p>
|
||||
<p>The first byte in the first table at $1d97 (which has the auto-label
|
||||
L1D97) is $b4. The first byte in the second table is $1d. So the first
|
||||
address we want is $1db4 + 1 = $1db5.</p>
|
||||
<p>Select the line at $1db5, and use Actions > Hint As Code Entry Point.
|
||||
<p>Select the line at $1db5, and use Actions > Hint As Code Entry Point.
|
||||
More code appears, but again it's only a few lines. Let's dress this one
|
||||
up a bit. Set a label on the code at $1db5 called "FUNC". At $1d97, edit
|
||||
the data item (double-click on "$b4"), click "Single bytes", then type "FUNC"
|
||||
@ -380,13 +380,13 @@ we know that they're all code entry points.</p>
|
||||
<p>Click OK. The table of address bytes should now all be references to
|
||||
symbols -- 15 low parts followed by 15 high parts. If you scroll down,
|
||||
you should see nothing but instructions until you get to the last dozen
|
||||
bytes at the end of the file. (If this isn't the case, use Edit > Undo,
|
||||
bytes at the end of the file. (If this isn't the case, use Edit > Undo,
|
||||
then work through the steps again.)</p>
|
||||
<p>The formatter did the same steps you went through earlier -- set a
|
||||
label, apply the label to the low and high bytes in the table, add a
|
||||
code entry point hint -- but did several of them at once.</p>
|
||||
|
||||
<p>We don't want to save this project, so select File > Close. When
|
||||
<p>We don't want to save this project, so select File > Close. When
|
||||
SourceGen asks if you want to continue, click OK.</p>
|
||||
|
||||
|
||||
@ -395,7 +395,7 @@ SourceGen asks if you want to continue, click OK.</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div id=footer>
|
||||
<div id="footer">
|
||||
<p><a href="index.html">Back to index</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user