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Application Note 0001 Rev. C May 30, 2005

Installing ASEM-51 V1.3 under FreeBSD (i386)

FreeBSD users may wish to run ASEM-51 V1.3 on their system. It is possible to run the Linux implementation of ASEM-51 under the FreeBSD Linux emulator. For this, perform the following steps:

  1. Ensure that the Linux emulator is set up properly. Login as root and invoke
    If a kernel module linux.ko is loaded, the linux emulator is installed and active. If not, install the linux emulation package, if necessary. It is located in /usr/ports/emulators/linux_base. Then load the kernel module:
        kldload linux
    Be sure to load the module also at boot time.
    For this, edit /etc/rc.conf and include a line like
  2. Download the tarball of ASEM-51 V1.3 for Linux
    and install it as described for Linux systems in the file README.1ST provided. Before running the installation script, it has to be adapted to FreeBSD, however: change line 62
        chgrp -R root $ASEM/* || exit $?
        chgrp -R wheel $ASEM/* || exit $?
  3. If you are invoking asem after a "successful" installation, it will probably abort with the following error message:
        ELF binary type "0" not known.
    In this case the binaries have to be branded for Linux first!
    Change the OS_ABI (byte 7 in the ELF header) of the executables:
        cd /usr/local/share/asem-51/1.3
        brandelf -t Linux asem hexbin customiz
  4. The reset51 program and the boot scripts are strictly Linux-specific.
    Do not invoke them under FreeBSD! Better defuse them with
        chmod a-x reset51 boot upload*

Now most of ASEM-51 is ready to use under FreeBSD 4.x or 5.x.
For further details refer to the Linux part of the ASEM-51 documentation.

Thanks a lot to Raymundo M. Vega for reporting this problem (and the solution)!

The next ASEM-51 version (1.4, or something) will also be available as a native implementation for FreeBSD (i386). Stay tuned!

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Last revised:   W.W. Heinz,   December 15, 2010