RE: [PARPORT] Low ECP speed

From: H. Mehrgan (hmehrgan@eso.org)
Date: Sun May 27 2001 - 17:15:06 EDT

  • Next message: Fred Barnes: "Re: [PARPORT] Low ECP speed"

    On Friday, May 25, 2001 12:16 PM, Tim Waugh [SMTP:twaugh@redhat.com] wrote:
    > On Thu, May 24, 2001 at 11:21:29PM +0100, Jes?s Miguel Torres Jorge wrote:
    >
    > > I'm using a modified version of parport_pc.c for read and write
    > > data from a integrated PC paralell port in ECP mode.
    > >
    > > The speed is around 140 KB/s and using a logic analizer
    > > I watch that every inb spend around 8 uS.
    >
    > Are you using hardware ECP support, or doing the protocol handshake
    > 'by hand'?
    >
    > Tim.
    > */
    > << File: ATT00001.att >>

    I have the same problem!?
    The write speed is about 400 KB/s but read speed is very low (only 70 KB/s).
    But how can I found out if I am using the ECP hardware or only software emulation of ECP?
    I heard about a speed of 1 MB/s, how can I reach it?

    Hamid

    ======================================================================
    Hamid Mehrgan
    ESO (European Southern Observatory)
    Infrared Instrumentation and Detectors

    Karl-Schwarzschild-Strasse 2 Phone: +49 89 32006-204/272
    D-85748 Garching bei Muenchen Fax: +49 89 32006-320
    Germany
    ======================================================================

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