RTLinux 3.1 on RH7.3 using the 2.4.4 kernel installation notes for Wobbegong.
Wobbegong has same motherboard chipset (including graphic, ethernet) as aoic.

   08/2002 - Initial Installation
   09/2002 - Updated to reflect kgcc installation.

0. My installation based on
   "Open RTLinux V3.1 Installation notes from Gerhard Schlager <schlager@impa.tuwien.ac.at>"
   But I separate the steps: Install the correct kernel, reboot, check linux; then Install
   RTLinux to the new kernel.  This file are just my notes on what I did.

   The wobbegong has:
      700Mhz Intel celeron
      256 MB RAM
      Intel CA810E chipset (integrated video, sound).
      Intel PCI EtherExpress Pro100 82557 -> use eepro100 driver.

          a1 - swap
          a2 - / for RH7.3 2.4.4-rtl
          a3 - / for smokey_clone.
          a4 - / for aoic_clone

1. Install a standard redhat 7.3 distrubtion.

   1.1 Perform normal RedHat install. I did the following:
      custom configuration
      No Firewall options.
      Install services: telnet, rsh, rdist, ssh-server; and
        edit /etc/xinetd.d to enable.

   1.2 Install the kgcc compiler.

      Put RH disk 2 in the CD-ROM drive.
      # mount /mnt/cdrom
      # cd /mnt/cdrom/RedHat/RPMS
      # rpm -i compat-glibc-6.2-2.1.3.2.i386.rpm
      # rpm -i compat-egcs-6.2-1.1.2.16.i386.rpm

      This gives you the kgcc ( egcs-2.91.66).

   1.3. Post installation.
      a. Add accounts: aroot, droot, ao, denault.
      c. nfs mountings, nis, telnet, rlogin, ssh
      c. up2date
      d. Other need apps:
         dump/restore

2. Get 2.4.4 kernel, Open RTLinux 3.1.

   2.1. Get 2.4.4 kernel source:

   > ftp ftp.kernel.org
   user: ftp
   password: me@
   ftp> cd  pub/linux/kernel/v2.4/
   ftp> get linux-2.4.4.tar.bz2
   ftp> quit

   2.1. Get Open RTLinux 3.1, rtlinux documentation, and patch for 2.4.18 kernel to
   run RTLinux 3.1

   >ftp ftp.fsmlabs.at
   user: ftp
   password: me@
   ftp> cd pub/rtlinux
   ftp> get rtlinux-3.1.tar.bz2
   ftp> get rtldoc-3.1.tar.bz2
   ftp> quit


3. Installed the standard kernel to be used with RTLinux. I prefer to first
   compile & install the standard kernel before appling the RTL patches.

   3.1 Install kernel source:

   > su root
   # cd /usr/src
   # bunzip2 -c ~/rtlinux/linux-2.4.4.tar.bz2 | tar xvf -

   [make sure /usr/src/linux -> new kernel directory ]

   3.2 Check that /usr/include/linux is a link to /usr/src/linux/include/linux
      (Need to fix on RH7.3).
      # cd /usr/include
      # rm -R -f linux
      # ln -s /usr/src/linux/include/linux

   3.3. Change makefile for kernel so it used kgcc compiler

   - edit /usr/src/linux/Makefile. Change the line
         CC    = $(CROSS_COMPILE)gcc
     to
         CC    = kgcc

   3.4 configure & make kernel:

      # make menuconfig

         Code maturity level options -> Prompt for development and/or incomplete code/drivers ENABLE
         Processor type and features -> your CPU type
         MTRR (Memory type range register) ENABLE
         Symmetric mulit-processing support DISABLE
         General setup -> Power Management support -> DISABLE
         enable NFS v3

      Recompile kernel, modules & install

      # make dep
      # make clean
      # make install
      # make modules
      # make modules_install

      # reboot

4. Patch the kernel with the RTLinux Patch:

   4.1 unpack the downloaded files to /usr/src

   > su root
   # cd /usr/src
   # bunzip2 -c ~/rtlinux/rtlinux-3.1.tar.bz2 | tar xvf -

   4.2 Need to patch the standard kernel to use with RTLinux. First do a dry-run and
   inspect the log file. If everthing look good do the patch for real

   # cd /usr/src/linux
   # patch -p1 --dry-run < ../rt-patch-2.4.4/patch_rtl-2.4.4 > mylogfile
   # patch -p1 < ../rt-patch-2.4.4/patch_rtl-2.4.4

   4.3 Prepare to recompile the kernel. Save your .config before doing make mrproper,
   then restore it. The make oldconfig just check it:

   cp .config my_config
   make mrproper
   cp my_config .config
   make oldconfig

   4.7 Recompile kernel, modules & install

   # make dep
   # make clean
   # make install
   # make modules
   # make modules_install

   # reboot

5. Install/Make RT Linux.

   5.1. Install RTlinux, first make a symbolic links:

   # cd /usr/src
   # ln -s rtlinux-3.1 rtlinux
   # cd rtlinux
   # ln -s ../linux linux

   5.2 Make RTLinux

   # cd /usr/src/rtlinux
   # make menuconfig
       <defaults are OK>
   # make
   # make devices


   5.3 Configure so that RTLinux modules are loaded at boot time.
       Add these line to /etc/rc.d/rc.local install rtl modules at boot time.

      #-----------------------------------------
      echo "Installing RTLinux Modules ... "
      sleep 1
      insmod /usr/src/rtlinux/modules/rtl.o
      insmod /usr/src/rtlinux/modules/rtl_time.o
      insmod /usr/src/rtlinux/modules/rtl_sched.o
      insmod /usr/src/rtlinux/modules/rtl_posixio.o
      insmod /usr/src/rtlinux/modules/rtl_fifo.o
      insmod /usr/src/rtlinux/modules/mbuff.o