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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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