## ASxxxx Cross Assemblers

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    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.
    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.

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Last Updated: August 2012