## ASxxxx Cross Assemblers

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    ASxxxx Cross Assemblers, Version 5.00, April 2009

    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,  GameBoy(Z80), H8/3xx, Cypress PSoC(M8C), PIC, Rabbit
    2000/3000, 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 associated 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
    listing 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 V1.7a, VC6, and Visual Studio 2005.  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: April 2009