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Here, we take the Fedora 20 x86_64 operation system for instance to explain 3 virtualization respectively for
parallel port pass through. Use the procedures listed below for step-by-step instructions separately based
on your case.
In case of QEMU/KVM or Xen, please use the following steps as a guideline to implement the virtualization :
(1) Make sure that the Guest OS has been installed.
(2) Add the following 4 lines into the xml file (for example, add to
/etc/libvirt/qemu/<yourvirtualmachine>.xml in linux KVM):
<parallel type=’dev’>
<source path=’/dev/parport0’/>
<target port=’0’/>
</parallel>
(3) Open a terminal in the Guest OS and then issue the following commands to install Linux Kernel drivers.
# modprobe parport
# modprobe parport_pc
# modprobe ppdev
(4) Check that whether the /dev/parport0 exists or not. You may not find proper /dev/parport0 in the device
list, please reconfirm the setup of xml file in the Guest OS.
(5) Reboot the Guest OS.
Note: It is necessary for you to install “insmod parport.ko”, “parport_pc.ko” and “ppdev.ko” Linux Kernel
drivers in virtualization environment before executing the “ppdev_test” testing program.
In case of VMWare Player, please use the following steps as a guideline to implement the virtualization:
(1) Make sure that the Guest OS has been installed.
(2) To set up the parallel port pass through, please enter VMWare Player’s --> Virtual Machine Setting -->
VMWare Player’s setting page to select /dev/parport0 as parallel port device.
(3) Open a terminal in the Guest OS and then issue the following commands to install Linux Kernel drivers.
# modprobe parport
# modprobe parport_pc
# modprobe ppdev
4) Check that whether the /dev/parport0 exists or not. You may not find proper “/dev/parport0” in the device
list, please reconfirm the setup of VMWare Player’s setting page described in Step 2.
(5) Reboot the Guest OS.
Note: It is still necessary for you to install “insmod parport.ko”, “parport_pc.ko” and “ppdev.ko” Linux Kernel
drivers in virtualization environment before executing the “ppdev_test” testing program.
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