Re: DEC Keyboard Question

From: John E. Malmberg (wb8tyw_at_qsl.network)
Date: 01/25/05

  • Next message: David Wade: "Re: disposition of largest private DEC collection in USA" 
    Date: 25 Jan 2005 16:44:17 -0600

    In article <5nxJd.6532$mv4.3353@news.cpqcorp.net>,
    "FredK" <fred.nospam@nospam.dec.com> writes:
    >
    > There are two types of KVM switches - dumb pass-thru and "smart" switches.
    > The dumb ones simply pass the data through with little intellegence. The
    > only thing that they need to do at least for VMS is to cause a power up
    > sequence to be generated when the KB is connected. This way we will
    > reprogram the KB automatically. The smart ones actually have a uProc that
    > handles the KB and then emulates a KB on the other side. These keyboards
    > need to either know about the extended codes - or at least be smart enough
    > to pass them through. In the worst case, these KVMs handle USB as well, and
    > then they need to know how to turn the extendd PS2 codes into the right USB
    > codes.

    With out an analyzer, there is probably no way to determine which type
    that the BELKIN F1DL102P KVM is. It obviously has to have some smarts because
    the only way to switch sessions is by using the keyboard.

    http://catalog.belkin.com/IWCatProductPage.process?Product_Id=164050

    It claims to do keyboard emulation.

    As I remember, the retail price at the local store is a bit lower than what
    is shown, and after the rebates, I think I ended up only spending less than
    1/2 of even that.

    There is not much documentation for it other than it is has support for
    multiple operating systems.

    I just put it in because it was cheap and allowed me to switch the audio also,
    which would simplify things.

    I figured if it did not work, I would not be out much.

    I do not know if there are problems that I have not discovered, after all
    it has only been a month on a home hobby machine.

    -John
    wb8tyw@qsl.network
    Personal Opinion Only

  • Next message: David Wade: "Re: disposition of largest private DEC collection in USA"

    Relevant Pages

    • Re: DEC Keyboard Question
      ... > then they need to know how to turn the extendd PS2 codes into the right USB ... the only way to switch sessions is by using the keyboard. ... It claims to do keyboard emulation. ...
      (comp.os.vms)
    • Re: Supporting a PS/2 Keyboard
      ... USB host port, right? ... Why not just put the HID keyboard driver in and let ... the users use a USB keyboard, or does it _have_ to be PS/2? ... interpreter that converts the scan codes returned by the USB part of the ...
      (microsoft.public.windowsce.platbuilder)
    • Re: Supporting a PS/2 Keyboard
      ... I don't have any USB to PS2 ... The NOP keyboard ... One alternative then is to get the hardware guy to put a PS/2 to USB ... I assume that CE's USB HID driver supports a USB ...
      (microsoft.public.windowsce.platbuilder)
    • Re: Capturing USB data?
      ... USB hardware device that a USB Keyboard and Mouse ... device drivers in a different ring, ... Works on every OS platform ...
      (microsoft.public.vc.mfc)
    • Re: Supporting a PS/2 Keyboard
      ... I don't have any USB to PS2 ... The NOP keyboard ... I assume that CE's USB HID driver supports a USB ... interfacing directly to the PS2 connector through the supplied PB ...
      (microsoft.public.windowsce.platbuilder)
    Loading