Re: scanimage -L crashes SuSE 6.4

From: Oliver Rauch (oliver.rauch@Wolfsburg.DE)
Date: Tue Apr 11 2000 - 12:54:17 PDT

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    abel deuring wrote:

    >
    > The Umax backend is not the most trivial piece of software; while it
    > tries to allocate a SCSI buffer of 128 kB when opening the SG file, I
    > could not figure out, how much data is actually transferred with a
    > single SCSI command. (Oliver, can you give a hint??)
    >

    Hi Abel,

    it depends on the frame buffer of the scanner.
    Most umax scanners use between 223KB and 2MB.
    As far as I see this is the limit for the transfered data size of one scsi command
    if the buffer is large enough. At least a single sanei_scsi_cmd() is able to
    get several 100KBytes. (Tested with a PowerLookIII with 2MB framesize and
    2MB scsi-buffer-size. Looks like a 2MB buffer does work).

    Bye
    Oliver 

    --
Homepage:       http://www.wolfsburg.de/~rauch
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E-Mail:         mailto:Oliver.Rauch@Wolfsburg.DE

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