2018-09-28 17:05:11 +00:00
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<title>Properties & Settings - 6502bench SourceGen</title>
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<body>
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2018-10-09 17:04:10 +00:00
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<div id="content">
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2018-09-28 17:05:11 +00:00
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<h1>6502bench SourceGen: Properties & Settings</h1>
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<p><a href="index.html">Back to index</a></p>
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<h2><a name="overview">Settings Overview</a></h2>
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<p>There are two classes of settings: application settings, and
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project properties.</p>
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<p>Application settings are stored in a file called "SourceGen-settings"
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in the SourceGen installation directory. If the file is missing or
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corrupted, some default settings will be used. These settings are local
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2018-10-04 01:03:04 +00:00
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to your system, and include everything from window sizes to whether or not
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you prefer hexadecimal values to be shown in upper case. None of them
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affect the way the project analyzes code and data, though they may affect
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the way generated assembly sources look.</p>
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<p>Project properties are stored in each individual .dis65 project file.
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They specify which CPU to use, which extension scripts to load, and a
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variety of other things that directly impact how SourceGen processes
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the project. Because of the potential impact, all changes to
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the project properties are made through the undo/redo buffer.</p>
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<h2><a name="app-settings">Application Settings</a></h2>
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<p>The settings editor is divided into four tabs. Changes aren't pushed
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out to the main application until you hit Apply or OK.</p>
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<h3><a name="appset-codeview">Code View</a></h3>
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2018-10-21 23:54:44 +00:00
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<p>These settings change the way the code looks on screen.</p>
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<p>Click the Column Visibility buttons to hide columns. Click them
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again to restore the column to a default width. A "hidden" column just
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has a width of zero, so with careful mouse positioning you can show and
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hide columns from the code list. The buttons may be more convenient
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though.</p>
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<p>You can select a different font for the code list. Make it as large
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or small as you want. Mono-space fonts like Courier or Consolas are
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recommended.</p>
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<p>You can choose to display different parts of the display in upper or
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lower case, using the "all lower" and "all upper" buttons as a quick way
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to set all values. These values are also used for generated assembly
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code. Note that labels are case-sensitive and can't be forced one way
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or the other.</p>
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2018-10-27 19:34:59 +00:00
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<p>The Clipboard drop-down list lets you choose the format for text
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<a href="mainwin.html#clipboard">copied to the clipboard</a>. The
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"Assembler Source" format includes the rightmost columns (label,
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opcode, operand, and comment), like assembly source code does. The
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"Disassembly" format adds the address and bytes on the left.</p>
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2018-10-27 19:34:59 +00:00
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<p>The "add spaces in bytes column" checkbox changes the format of the
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hex data in the code list "bytes" column from dense (<code>20edfd</code>)
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to spaced (<code>20 ed fd</code>). This also affects the way the
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"Disassembly" copy & paste format looks.</p>
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<h3><a name="appset-asmconfig">Asm Config</a></h3>
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2018-10-21 23:54:44 +00:00
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<p>These settings configure cross-assemblers and modify assembly source
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generation in various ways.</p>
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<p>To configure an assembler, select it in the pop-up menu. The fields
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will initially contain assembler-specific default values. All of
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the values in the Assembler Configuration box may be configured
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differently for each assembler.</p>
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<p>The "executable" box holds the full path to the cross-assembler
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executable. For cc65 this is <code>bin/cl65.exe</code>, for Merlin32
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you need <code>Merlin32.exe</code>. (On non-Windows platforms, you
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won't need the ".exe".) For cc65 you need a full installation, with
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the configuration files and libraries, not just the cl65 binary itself.</p>
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<p>The "column widths" section allows you to specify the width of the
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label, opcode, operand, and comment fields. If the width is less than 1,
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or isn't a valid number, 1 will be used. (Note: the comment width isn't
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used at this time.)</p>
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<p>When "show cycle counts" is checked, every instruction line will have
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an end-of-line comment that indicates the number of cycles required for
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that instruction. This is shown in the code list and included in
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generated assembly output. If the cycle count can't be determined solely
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from a static analysis, e.g. an extra cycle is required if
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<code>LDA (dp),Y</code> crosses a page boundary, a '+' will be shown.
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In some cases the variability can be factored out if the state of
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certain status flags is known, e.g. 65C02 instructions that take longer
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in decimal mode won't be shown as variable if the analyzer can determine
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that D=0 or D=1.</p>
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2018-10-21 23:54:44 +00:00
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<p>If "put long labels on separate line" is checked, labels that are
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longer than the label column are placed on their own line. This looks
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a bit nicer because otherwise the opcode gets pushed out of alignment.
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(Some assemblers get bent out of shape if you split an equate
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directive, so those might stay on one line.)</p>
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<p>If you enable "identify assembler in output", a comment will be
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added to the top of the generated assembly output that identifies the
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target assembler and version. This can be very helpful if the source
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file is sent to other people, since it may not otherwise be obvious from
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the source file what the intended target assembler is.</p>
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<p>"Disable label localization" turns off the
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<a href="codegen.html#localizer">label localizer</a>.</p>
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2018-09-28 17:05:11 +00:00
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<h3><a name="appset-displayformat">Display Format</a></h3>
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<p>These options change the way the code list looks on screen. They
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do not affect generated code.</p>
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<p>The
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<a href="intro.html#width-disambiguation">operand width disambiguator</a>
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strings are used when the width of an instruction operand is unclear.
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You may specify values for all of them or none of them.</p>
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2018-10-25 00:18:08 +00:00
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<p>Different assemblers have different ways of forming expressions.
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Sometimes the rules allow expressions to be written simply, other times
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explicit grouping with parenthesis is required. Select whichever style
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you are most comfortable with.</p>
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<p>The "quick set" buttons configure the fields on this tab to match
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the conventions of the specified assembler. Select your preferred assembler
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with the combox box, then click "set" to set the fields.</p>
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<h3><a name="appset-pseudoop">Pseudo-Op</a></h3>
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2018-10-21 23:54:44 +00:00
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<p>These options change the way the code list looks on screen. Assembler
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directives and data pseudo-opcodes will use these values. This does
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not affect generated source code, which always matches the conventions
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of the target assembler.</p>
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<p>Enter the string you want to use for the various data formats. If
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a field is left blank, a default value is used.</p>
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<p>The "quick set" buttons configure the fields on this tab to match
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the conventions of the specified assembler. Select your preferred assembler
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with the combox box, then click "set" to set the fields.</p>
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2018-09-28 17:05:11 +00:00
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<h2><a name="project-properties">Project Properties</a></h2>
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<p>The properties editor is divided into four tabs. Changes aren't pushed
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out to the main application until you close the dialog. Clicking Apply
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will "latch" the current changes, ensuring that they're applied even if
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you later hit Cancel, but the changes are not applied immediately.</p>
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<p>All changes are subject to undo/redo.</p>
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<h3><a name="projprop-general">General</a></h3>
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<p>The choice of CPU determines the set of available instructions, as
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well as cycle costs and register widths. There are many variations
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on the 6502, but from the perspective of a disassembler most can be
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treated as one of these three:</p>
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<ol>
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<li>MOS 6502. The original 8-bit instruction set.</li>
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<li>WDC W65C02S. Expanded the instruction set and smoothed
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some rough edges.</li>
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<li>WDC W65C816S. Expanded instruction set, 24-bit address space,
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and 16-bit registers.</li>
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</ol>
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<p>The Rockwell R65C02, Hudson Soft HuC6280, and Commodore CSG 4510 / 65CE02
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have instruction sets that expand on the 6502/65C02, but aren't compatible
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with the 65816. These are not yet supported by SourceGen.</p>
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<p>If "enable undocumented instructions" is checked, some additional
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opcodes are recognized on the 6502 and 65C02. These instructions are
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not part of the chip specification, but most of them have consistent
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behavior and can be used. If the box is not checked, the instructions
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are treated as invalid and cause the code analyzer to assume that it
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has run into a data area.</p>
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<p>The entry flags determine the initial value for the processor status
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flag register. Code that is unreachable internally (requiring a code
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entry point hint) will use this value. This is chiefly of use for
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65816 code, where the initial value of the M/X/E flags is significant.</p>
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<p>If "analyze uncategorized data" is checked, SourceGen will attempt to
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identify strings and regions filled with a single byte value. If it's
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not checked, anything that isn't detected as code or explicitly formatted
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will simply be shown as a byte value.</p>
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<p>If "seek nearby targets" is checked, the analyzer will try to use
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nearby labels for data loads and stores.</p>
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<p>The "minimum characters for string" setting determines how many
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ASCII characters need to appear consecutively for the data analyzer to
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declare it a string. Shorter values are prone to false-positive
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identifications, longer values miss out on short strings. You can also
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set it to "none" to disable automatic string identification.</p>
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<h3><a name="projprop-projsym">Project Symbols</a></h3>
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<p>You can add, edit, and delete individual symbols and constants.
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See the <a href="intro.html#about-symbols">symbols</a> section for an
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explanation of how project symbols work.</p>
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<p>The Edit Symbol button opens the
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<a href="editors.html#project-symbol">Edit Project Symbol</a> dialog, which
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allows changing any part of a symbol definition. You're not allowed to
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create two symbols with the same label.</p>
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<p>The Import button allows you to import symbols from another project.
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Only labels that have been tagged as global and exported will be imported.
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Existing symbols with identical labels will be replaced, so it's okay to
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run the importer multiple times. Labels that aren't found will not be
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removed, so you can safely import from multiple projects, but will need
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to manually delete any symbols that are no longer being exported.</p>
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2018-09-28 17:05:11 +00:00
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<h3><a name="projprop-symfiles">Symbol Files</a></h3>
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<p>From here, you can add and remove platform symbol files, or change
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the order in which they are loaded.
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See the <a href="intro.html#about-symbols">symbols</a> section for an
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explanation of how platform symbols work, and the
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<a href="advanced.html#platform-symbols">advanced topics</a> section
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for a description of the file syntax.</p>
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<p>Platform symbol files must live in the RuntimeData directory that comes
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with SourceGen, or in the directory where the project file lives. This
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is mostly to keep things manageable when projects are distributed to
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other people, but also acts as a minor security check, to prevent a
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wayward project from trying to open files it shouldn't.</p>
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<p>In the list, files loaded from the RuntimeData directory will be
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prefixed with <code>RT:</code>. Files loaded from the project directory
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will be prefixed with <code>PROJ:</code>.</p>
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<p>If a platform symbol file can't be found when the project is opened,
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you will receive a warning.</p>
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<h3><a name="projprop-extscripts">Extension Scripts</a></h3>
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<p>From here, you can add and remove extension script files.
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See the <a href="intro.html#scripts">extension scripts</a> section for
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an overview of how extension scripts work.
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There's a more detailed document in the RuntimeData directory
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("ExtensionScripts.md").</p>
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<p>Extension script files must live in the RuntimeData directory that comes
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with SourceGen, or in the directory where the project file lives. This
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is mostly to keep things manageable when projects are distributed to
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other people, but also acts as a minor security check, to prevent a
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wayward project from trying to open files it shouldn't.</p>
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<p>In the list, files loaded from the RuntimeData directory will be
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prefixed with <code>RT:</code>. Files loaded from the project directory
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will be prefixed with <code>PROJ:</code>.</p>
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<p>If an extension script file can't be found when the project is opened,
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you will receive a warning.</p>
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</div>
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2018-10-09 17:04:10 +00:00
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<div id="footer">
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<p><a href="index.html">Back to index</a></p>
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