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+
+        ASxxxx Cross Assemblers, Version 1.7, November 1995 
+
+        Submitted by Alan R.  Baldwin, 
+        Kent State University, Kent, Ohio 
+
+        Operating System:  TSX+, RT-11, MS/DOS, PDOS 
+        or other supporting K&R 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 6800(6802/6808), 6801(hd6303),
+        6804,   6805,   68HC08,   6809,   6811,   68HC16,    8085(8080),
+        z80(hd64180), H8/3xx, and 6500 series microprocessors.  Each as-
+        sembler 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,  and
+        (6) include-file processing.  
+
+           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 Intel Hex or Motorola  S19  output  file,  (9)
+        produce  a  map  of the linked memory image, and (10) update the
+        ASxxxx assembler listing files  with  the  absolute  linked  ad-
+        dresses and data.  
+
+           The  assemblers  and  linker  have  been tested using DECUS C
+        under TSX+ and RT-11, PDOS C V5.4b, and Symantec C/C++ V6.1/V7.0
+        under  DOS/Windows  3.x.  Complete source code and documentation
+        for the assemblers and linker is included with the distribution.
+        Additionally, test code for each assembler and several micropro-
+        cessor 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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