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dis6502 is a flow-tracing disassembler for the 6502, originally written by Robert Bond and supporting Atari binary files
dis6502 is a flow-tracing disassembler for the 6502, originally written by Robert Bond and supporting Atari binary files. Robert posted dis6502 to the Usenet newsgroup net.sources on 9-Oct-1986, and to comp.sources.unix 7-Jun-1988.
Udi Finkelstein ported dis6502 to the Amiga, added support for Commodore 64 object files, and posted it to comp.sources.amiga on 4-Nov-1988.
This version of dis6502 has been modified in several ways:
* Can read raw binary files.
* Option to specify alternate reset and interrupt vector addresses.
* Line numbers are no longer necessary with equates in definition files.
* If a data reference is made to an address that does not have an
assigned name, but address-1 does, the reference will be disassembled
as name+1. This is convenient for two-byte variables, particularly in
* New definition file directives:
< name > .equ < addr > same as .eq
.jtab2 < addr >,< addr >,< count > table of code pointers, split into high and low byte tables
.rtstab < addr >,< addr >,< count > like jtab2, but each entry contains the target address
minus one, for use with RTS
* Rather than using recursive calls to trace every instruction, there is now a trace queue.
* Added a "-7" option to mask off MSB of character data.
* Updated to use ANSI C function prototypes and include files.
* Amiga/Manx changes have been removed.
dis6502 has been tested on Red Hat Linux 9, but should work on other Linux, BSD, and Unix systems.
dis6502 is distributed under the terms of the Free Software Foundation's General Public License, Version 2. See the file COPYING for details.
The original release notes from Robert Bond and Udi Finkelstein are in the files README.Bond and README.Finkelstein.
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