Re: [PARPORT] SIIG Dual Parallel Port card under RH 6.2

From: Jerry Mulchin (
Date: Tue Apr 09 2002 - 22:08:07 EDT

  • Next message: Tim Waugh: "Re: [PARPORT] SIIG Dual Parallel Port card under RH 6.2"

    Oh, I see. So far whenever I've looked at the PCI addresses they appear to be at the
    same base address. So in order to prevent the I/O ports from shifting out from under
    me, I should make sure that the board ID is checked and then make sure the I/O
    address is correct.

    So that leads me to a question. Are there user space routines available that allow me
    to probe and alter the PCI registers directly? Are the ones used in the kernel available
    for user space use?

    Any suggestions would be helpful.

    Jerry Mulchin

    At 07:45 AM 4/9/02 +0100, Tim Waugh wrote:
    >On Mon, Apr 08, 2002 at 07:13:32PM -0700, Jerry Mulchin wrote:
    >> I'm not sure I understand what you mean by "they might change when
    >> you change bits of hardware around". Does this have to do with
    >> setting the EPP/SPP mode registers?
    >No; it's the base address that might change from one boot to another.

    Jerry Mulchin Amateur Radio Call - N7EME
    Programmer, Amateur Astronomer, Ham Radio
    e-mail (home) -
    Astronomy Web Page

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