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       avra - Assembler for the Atmel AVR microcontroller family


       avra [-f] [O|M|I|G] output file type
            [-o outfile] output file name
            [-l listfile] generate list file
            [-m mapfile] generate map file
            [--define symbol[=value]] [--includedir dir] [-listmac]
            [--max_errors number] [--devices] [--version]
            [-h] [--help] general help


       AVRA  is  an assembler for Atmel AVR microcontrollers, and it is almost
       compatible  with  Atmel’s  own  assembler  AVRASM32.   The  differences
       between the two are:

       Support for some extra preprocessor directives.
              includes:  .define, .undef, .ifdef, .ifndef, .if, .else, .endif,
              .elif, .warning

       Not all command line options are supported.
              Specifying an eeprom file (-e) is not supported. All eeprom data
              is  put  out into a file called program.eep.hex and always Intel
              hex format. Other hex file formats than Intel are currently  not

       Forward references are not supported.
              Like  in  C,  you have to define everything before you are using
              it, excepting labels. This  makes  sure,  that  directives  like
              .ifdef and .undef are working properly. If you are familiar with
              the C programming language, you should get easily into AVRA. See
              chapter  "Programming techniques" for more information about how
              to write proper code.

       Enhanced macro support.
              AVRA has some new features for  writing  flexible  macros.  This
              should  increase  the  ability to reuse code e.g. build your own

       Debugging support.
              AVRA creates a coff file everytime the assembly  was  sucessful.
              This  file  allows AVR Studio or any coff compatible debugger to
              simulate or emulate the program.

       Meta tags for assembly time.
              This helps you tracking versions of your software and  can  also
              be used to generate customer specific serial numbers.


       Several option can be given after one ’-’, but if an option requires an
       argument; the argument must be given after that option.

       --listfile, -l
              Create list file

       --mapfile, -m
              Create map file

       --define, -D
              Define symbol.

       --includedir, -I
              Additional include dirs.

              List macro expansion in listfile.

              Maximum number of errors before exit (default: 10)

              List out supported devices.

              Version information.

       --help, -h
              Show summary of options.




       The initial version of AVRA was  written  by  John  Anders  Haugum.  He
       released  all  versions until v0.7. All later versions were released by
       Tobias Weber.