Projects / vAVRdisasm


vAVRdisasm is an Atmel 8-bit AVR firmware disassembler. This single-pass disassembler can read Atmel Generic, Intel HEX8, and Motorola S-Record formatted binary files containing valid AVR firmware. vAVRdisasm is capable of a variety of formatting options, and can output directly assemble-able code.

Operating Systems

Recent releases

  •  24 Sep 2011 23:34

    Release Notes: Address operand formatting for LDS, STS, JMP, and CALL instructions was changed from byte addresses to word addresses to make vAVRdisasm's output compatible with AVR assemblers. A bug involving signed relative branch/jump decoding was fixed: jumps in the reverse direction are now correctly decoded. The license was upgraded from the GPLv2 to the GPLv3.

    •  03 Apr 2011 04:16

      Release Notes: A critical bug was fixed regarding S-Record reading, which was ignoring valid data records. Output file support was added by way of the -o/--out-file option. Standard input support was added with the "-" file argument, meaning that the disassembler now supports piped input. Atmel Generic / Intel HEX8 / Motorola S-Record auto-detection was improved by using the first character rather than the file extension. Support was added for printing of original opcode data alongside disassembly.

      •  27 Jan 2011 04:44

        Release Notes: Address decoding was fixed for LDS, STS, JMP, and CALL instructions. A modification in the previous release where addresses were doubled because disassembly is byte indexed was reversed. Support for XCH, LAS, LAC, and LAT instructions was added, bringing the disassembler up to date with AVR Instruction Set revision 0856I - 07/10.

        •  28 May 2010 01:46

          Release Notes: Address decoding was fixed for the LDS, STS, JMP, and CALL instructions. Previously, vAVRdisasm was printing the disassembled address operands as twice the value they should have been for these instructions.

          •  04 Feb 2010 21:40

            Release Notes: This release fixes the number-of-operands field for the SPM instruction. This bug was causing vAVRdisasm to crash, as it was attempting to format a nonexistent operand during disassembly.


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