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Motorola 68HC11 Assembler (Crossware) Motorola 68HC11 Assembler (Crossware)

Go to HC11 Assembler order page

The Crossware A68HC11NT is a sophisticated relocatable macro cross assembler that generates code for the 68HC11 microprocessor. It comes complete with the Crossware Embedded Development Studio and runs under Windows 9x, Windows 2000 and Windows NT 4.0.


  • Motorola compatible relocatable macro cross assembler
  • Source level debug output in IEEE695 format
  • Wide range of output file formats
  • Highly user friendly Embedded Development Studio integrated development environment


The package includes the following tools and utilities:

  • relocatable macro cross assembler
  • relocating linker
  • make utility
  • library manager
  • Embedded Development Studio which includes
    • integrated project creation and maintenance utility
    • integrated editor
    • integrated terminal emulator
    • on-line books with full text search

(The Embedded Development Studio is described in detail in a separate data sheet)

All of these tools and utilities are Win32 applications built to make the most of your 32 bit computing environment. All tools can be used outside of the Embedded Development Studio if required using conventional command-line instructions.



The cross assembler converts assembler code into an intermediate object module format which is subsequently linked with other intermediate object modules to create the final program. Features include:

  • High speed assembly to create relocatable object module
  • Motorola standard segment directives
  • Motorola standard mnemonics
  • Nestable macros with full argument passing
  • Nestable conditional assembly
  • Comprehensive range of assembler directives and pseudo ops (see below)
  • Complex expression evaluation with Motorola standard operators
  • Upper and lower case labels with up to 255 significant characters
  • Upper and lower case opcode mnemonics
  • Upper and lower case macro names with up to 255 significant characters
  • Comprehensive error checking with descriptive error messages
  • Debug output of symbolic information
  • User definable listing format


The linker combines object modules created with the compiler and/or the assembler to create the final code that will run on your target system. It carries out the following functions:

  • scans each module to collect segment and variable information
  • arranges and positions segments at appropriate memory locations to suit the memory organisation of the target system and any specific location information supplied by the user
  • finalises the values of all variables and calculates the results of any incomplete expressions
  • extracts and relocates the code from each module to produce the final target program

The target program can be produced in a number of different formats including Motorola S records, HP/Microtec IEEE695 format or as a binary rom image.

An optional link map will show the final location and sizes of all segments and the values of all global variables.


The assembler can optionally generate full source level debug information. The linker updates these debug records to take account of the final location of the target program and outputs them to the target program file in IEEE695 format. Debuggers and in-circuit emulators that support this popular format can then use it to facilitate full source level debugging.


Instead of being used to create a final target program, the object modules produced by the compiler and assembler can be integrated into a library. The library manager performs the tasks of:

  • combining object modules into a library
  • adding modules to an existing library
  • removing or extracting modules from an existing library
  • listing the contents of a library


The MAKE utility simplifies the task of keeping object files, libraries and target programs up-to-date. It detects if any source or dependency files have changed since the last build and runs the appropriate tools (compiler, assembler, linker or library manager) to rebuild out-of-date files. It supports many advanced features including macros, inference rules, conditional inclusion and other preprocessing directives and in-line files with automatic temporary file creation.

Although the Embedded Development Studio uses its own integrated routines to keep projects up-to-date, this stand-alone MAKE utility can be used to build projects from the command-line or from within another application. The Embedded Development Studio will automatically create a makefile which is fully compatible with this stand-alone MAKE utility.


IBM compatible PC with an Intel 80486 or above running Windows 9x, Windows 2000 or Windows NT 4.0.

The following assembler directives and pseudo-ops are available:

bsz, fail, ific, mc, nomd, org, spc,
clist, fcb, ifinc, md, nomex, page, sym,
common, fcc, ifnc, mex, noobj, pagewidth, ttl,
end, fdb, include, nam, nopage, rmb, una,
endc, fields, list, nocase, noseq, section, xdef,
endm, ifc, listf, noclist, nouna, seqon, xref,
equ, ifcc, macr, nolist, obj, set,  
      nomc, opt, setdp,  

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