

        ASxxxx Cross Assemblers, Version 5.05, August 2012 

        Submitted by Alan R.  Baldwin, 
        Kent State University, Kent, Ohio 

        Operating System:  Linux, Windows, MS-DOS 
        or other supporting ANSI C.  

        Source Langauge:  C 

        Abstract:  

           The  ASxxxx  assemblers are a series of microprocessor assem-
        blers written in the C programming  language.   This  collection
        contains  cross  assemblers  for the 1802, S2650, SC/MP, MPS430,
        61860, 6500,  6800(6802/6808),  6801(6803/HD6303),  6804,  6805,
        68HC(S)08,     6809,    68HC11,    68HC(S)12,    68HC16,    740,
        8048(8041/8022/8021)  8051,  8085(8080),  DS8xCxxx,  AVR,  EZ80,
        F2MC8L/FX,  F8/3870,  GameBoy(Z80),  H8/3xx,  Cypress PSoC(M8C),
        PIC, Rabbit 2000/3000, asst6, asst7, asst8, Z8, and Z80(HD64180)
        series  microprocessors.   Each  assembler has a device specific
        section which includes:  (1) device description, byte order, and
        file  extension  information,  (2)  a table of assembler general
        directives, special directives, assembler  mnemonics  and  asso-
        ciated operation codes, (3) machine specific code for processing
        the device mnemonics, addressing modes, and special directives. 

           The assemblers have a common device independent section which
        handles the details of file input/output, symbol  table  genera-
        tion,  program/data  areas,  expression  analysis, and assembler
        directive processing.  

           The  assemblers  provide  the following features:  (1) alpha-
        betized, formatted symbol table listings, (2) relocatable object
        modules, (3) global symbols for linking object modules, (4) con-
        ditional assembly directives, (5) reusable  local  symbols,  (6)
        include-file  processing,  and  (7)  a  general macro processing
        facility.  

           The  companion program ASLINK is a relocating linker perform-
        ing the following functions:  (1) bind multiple  object  modules
        into  a  single  memory  image,  (2) resolve inter-module symbol
        references,  (3)  resolve  undefined  symbols   from   specified
        librarys of object modules, (4) process absolute, relative, con-
        catenated, and overlay attributes in data and program  sections,
        (5)  perform  byte and word program-counter relative (pc or pcr)
        addressing calculations, (6) define absolute  symbol  values  at
        link  time, (7) define absolute area base address values at link
        time, (8) produce an Intel Hex  record,  Motorola  S  record  or
        Tandy  CoCo  Disk  Basic  output  file, (9) produce a map of the
        linked memory image, and (10) update the ASxxxx assembler  list-
        ing files with the absolute linked addresses and data.  

           The  assemblers  and  linker have been tested using Linux and
        DJGPP, Cygwin, Symantec C/C++ V7.2, Borland Turbo C++ 3.0,  Open
        Watcom  V1.9,  VC6,  Visual Studio 2005, and Visual Studio 2010.


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        Complete source code and documentation for  the  assemblers  and
        linker  is  included  with the distribution.  Additionally, test
        code for each assembler and several  microprocessor  monitors  (
        ASSIST05  for  the  6805,  MONDEB and ASSIST09 for the 6809, and
        BUFFALO 2.5 for the 6811) are included as  working  examples  of
        use of these assemblers.  
