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191 lines
5.9 KiB
Plaintext
191 lines
5.9 KiB
Plaintext
<!doctype linuxdoc system>
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<article>
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<title>da65 Users Guide
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<author>Ullrich von Bassewitz, <htmlurl url="mailto:uz@cc65.org" name="uz@cc65.org">
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<date>2003-08-08
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<abstract>
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da65 is a 6502/65C02 disassembler that is able to read user supplied
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information about its input data for better results. The output is ready for
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feeding into ca65, the macro assembler supplied with the cc65 C compiler.
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</abstract>
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<!-- Table of contents -->
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<toc>
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<!-- Begin the document -->
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<sect>Overview<p>
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da65 is a disassembler for 6502/65C02 code. It is supplied as a utility with
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the cc65 C compiler and generates output that is suitable for the ca65
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macro assembler.
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Besides generating output for ca65, one of the design goals was that the user
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is able to feed additional information about the code into the disassembler
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for improved results. This information may include the location and size of
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tables, and their format.
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One nice advantage of this concept is that disassembly information for
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copyrighted binaries may be handled without problems: One can just pass the
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information file for disassembling the binary, so everyone with a legal copy
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of the binary can generate a nicely formatted disassembly with readable labels
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and other information.
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<sect>Usage<p>
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<sect1>Command line option overview<p>
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The assembler accepts the following options:
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<tscreen><verb>
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---------------------------------------------------------------------------
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Usage: da65 [options] file
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Short options:
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-g Add debug info to object file
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-h Help (this text)
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-o name Name the output file
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-v Increase verbosity
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-F Add formfeeds to the output
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-S addr Set the start/load address
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-V Print the disassembler version
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Long options:
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--cpu type Set cpu type
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--debug-info Add debug info to object file
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--formfeeds Add formfeeds to the output
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--help Help (this text)
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--pagelength n Set the page length for the listing
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--start-addr addr Set the start/load address
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--verbose Increase verbosity
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--version Print the disassembler version
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---------------------------------------------------------------------------
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</verb></tscreen>
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<sect1>Command line options in detail<p>
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Here is a description of all the command line options:
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<descrip>
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<label id="option--cpu">
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<tag><tt>--cpu type</tt></tag>
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Set the CPU type. The option takes a parameter, which may be one of
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6502, 65SC02, 65C02
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Support for the 65816 is currently not available.
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<label id="option--formfeeds">
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<tag><tt>-F, --formfeeds</tt></tag>
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Add formfeeds to the generated output. This feature is useful together
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with the <tt><ref id="option--pagelength" name="--pagelength"></tt> option.
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If <tt/--formfeeds/ is given, a formfeed is added to the output after each
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page.
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<tag><tt>-g, --debug-info</tt></tag>
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This option adds the <tt/.DEBUGINFO/ command to the output file, so the
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assembler will generate debug information when reassembling the generated
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output.
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<tag><tt>-h, --help</tt></tag>
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Print the short option summary shown above.
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<tag><tt>-o name</tt></tag>
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The default output name is the name of the input file with the extension
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replaced by ".dis". If you don't like that, you may give another name with
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the -o option. The output file will be placed in the same directory as
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the source file, or, if -o is given, the full path in this name is used.
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<label id="option--pagelength">
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<tag><tt>--pagelength n</tt></tag>
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Sets the length of a listing page in lines. After this number of lines, a
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new page header is generated. If the <tt><ref id="option--formfeeds"
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name="--formfeeds"></tt> is also given, a formfeed is inserted before
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generating the page header.
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A value of -1 for the page length will disable paging of the output.
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<tag><tt>-S addr, --start-addr addr</tt></tag>
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Specify the start/load address of the binary code that is going to be
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disassembled. The given address is interpreted as an octal value if
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preceeded with a '0' digit, as a hexadecimal value if preceeded with '0x',
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'0X', or '$', and as a decimal value in all other cases. If no start address
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is specified, 0xC000 is used - which is often not what you want.
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<tag><tt>-v, --verbose</tt></tag>
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Increase the assembler verbosity. Usually only needed for debugging
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purposes. You may use this option more than one time for even more
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verbose output.
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<tag><tt>-V, --version</tt></tag>
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Print the version number of the assembler. If you send any suggestions
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or bugfixes, please include the version number.
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</descrip>
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<p>
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<sect>Bugs/Feedback<p>
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If you have problems using the disassembler, if you find any bugs, or if
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you're doing something interesting with the assembler, I would be glad to hear
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from you. Feel free to contact me by email (<htmlurl url="mailto:uz@cc65.org"
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name="uz@cc65.org">).
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<sect>Copyright<p>
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da65 (and all cc65 binutils) are (C) Copyright 1998-2003 Ullrich von
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Bassewitz. For usage of the binaries and/or sources the following
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conditions do apply:
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This software is provided 'as-is', without any expressed or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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<enum>
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<item> The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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<item> Altered source versions must be plainly marked as such, and must not
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be misrepresented as being the original software.
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<item> This notice may not be removed or altered from any source
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distribution.
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</enum>
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</article>
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