XP Home and Parallel Ports

Discussion in 'Virtual PC' started by Christopher Hower, Feb 19, 2004.

  1. I am using Virtual PC 2004 to run a legacy DOS application
    on a XP Home machine. Everything works great, but the
    application I am using requires a parallel port key to
    run. When I look at the setting for the virtual machine,
    I do not have LPT1 as an option for printer ports. The
    list is blank. Anybody have any ideas?
     
    Christopher Hower, Feb 19, 2004
    #1
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  2. Christopher Hower

    pml Guest

    Some things to check:

    The setting you mention, I assume you mean the setting in the VPC config
    program. (If you mean there is no parallell port found *within* the guest
    (ie in the OS that runs on the guest or in diagnostic programs), you
    probably haven't enabled the parallell port in the parallell port setting in
    VPC.)

    Is the parallell port enabled in the bios (of the host)? I don't know if
    it's a problem for VPC if it is, but you could try changing its setting from
    an enhanced mode ("EPP", "ECP") to standard mode ("SPP").

    Is there a printer (or anything else) connected to that port, or is that
    port unused on the host? (Some printers has drivers that constantly check
    the printer for status messages and this kind of communication may lock the
    parallell port for other use).

    Have you installed any kind of driver on the host for the parallell port,
    for instance the same driver that you want to use in the guest? (This driver
    might lock the parallell port for use of other programs, eg Virtual PC).
     
    pml, Feb 20, 2004
    #2
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