110918 ASxxxx Assemblers and Linker Version: 1.5, July 1990
Submitted by: Alan R. Baldwin, Kent State University, Physics Dept.,
Operating System: MS-DOS V3.3, RT-11 V5.3, TSX-PLUS Source Language:
C Memory Required: 30-50KB per assembler Keywords: Cross-Assemblers
Abstract: The ASxxxx assemblers are a series of microprocessor
assemblers written in the C programming language. This
collection contains cross assemblers for the 6800
(6802/6808), 6801(hd6303), 6804, 6805, 6809, 6811,
8085(8080), and z80(hd64180) microprocessors. This program
is available in either RT-11 format or VMS/BACKUP format.
See DECUS No. V00522 for the VMS/BACKUP format.
Each assembler has a device specific section which includes:
. Device description, byte order, and file extension
. A table of assembler general directives, special
directives, assembler mnemonics and associated operation
. 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
generation, program/data areas, expression analysis, and
assembler directive processing.
The assemblers provide the following features:
. Alphabetized, formatted symbol table listings.
. Relocatable object modules.
. Global symbols for linking object modules.
. Conditional assembly directives.
. Reusable local symbols.
. Include-file processing.
The companion program ASLINK is a relocating linker
performing the following functions:
. Bind multiple object modules into a single memory image.
. Resolve inter-module symbol references.
. Process absolute, relative, concatenated, and overlay
attributes in data and program sections.
. Perform byte and word program-counter relative (pc or
pcr) addressing calculations.
. Define absolute symbol values at link time.
. Define absolute area base address values at link time.
. Produce Intel Hex or Motorola S19 output file.
. Produce a map of the linked memory image.
The assemblers and linker have been tested using DECUS C
under TSX-PLUS and RT-11, PDOS C V5.4b and with TurboC V1.5
under MS-DOS. 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
Notes: Runs on other operating systems supporting Kernigan & Ritchie C
Executable and/or object code is included.
Changes and Improvements: Assembler/Linker relocation and portability
Media (Service Charge Code): Three RX02 Diskettes (LC) Format: RT-11,
600' Magnetic Tape (MA) Format: RT-11
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Created: December 26, 1998