Re: Mustek/Request-sense problems -> Solution?

Thomas Blume (mblum1@nightshift.uni-paderborn.de)
Fri, 9 May 1997 11:36:05 +0200

> Thomas> The results I obtain show the same effects as were mentioned
> Thomas> here with 3-pass scanning. But as lineart mode for faxing is
> Thomas> currently my main application, I didn't try to track it down
> Thomas> further.
>
> Hmmh, the only problem with 3-pass scanning at this point is a
> performance problem. The actual scanning works fine AFAIK. If you

Sorry for the alarm. It actually works now, after

#ifdef NEED_MUSTEK_LINE_DISTANCE_WORKAROUND
#undef NEED_MUSTEK_LINE_DISTANCE_WORKAROUND
#endif

in my working sources. My first configure after obtaining sane was
with --disable-ld-fix, but as scanning didn't work at all, I
reconfigured for debugging and forgot this.

The only drawback I notice is speed. Could anybody tell me, what
is a reasonable size for SG_BIG_BUF? Is it possible to prepare
configure for profiling ?

> What I did is change the SANEI_SCSI interface so you can optionally
> register a sense-handler callback that can be used to translate the
> sense-buffer info into a reasonable SANE status-code.

This sounds pretty good!! When the code is available, I will report
success for the 1542 to be included in the man-page.

>
> Thomas> It
> Thomas> has only 1 jumper for wait, the PNR/PNP jumper is missing.
>
> Can somebody explain to me what Plug-and-Run is as opposed to
> Plug-and-Play? I'm not really all that wired into the pc-world.

A Mustek technician (whom I invited to join this list, hope he does)
told me that PNR as opposed to PNP will not be seen by Win95, such
that this OS will not mess with it. Initialization is done completely
by the driver.

Thomas

-- 
Thomas Blume                          <mblum1@hrz.uni-paderborn.de>
Technische Chemie und Chemische Verfahrenstechnik, UNI-GH-Paderborn
Tel.: +49 5251 602598                          Fax: +49 5251 603244

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