+
+
+ 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.
+\f
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