[filmscanners] RE: large scanning project

["Laurie Solomon" <laurie@advancenet.net>]

I may have responded to Tony's post on this a little too quickly without
giving his post a real close reading; as a result, I glossed over some
of the issues in my reply saying he was essentially correct, as I
understand it.

You are correct in suggesting that the core native device drivers for a
supported scanner need to be installed and locatable via the registry
before VS or anything else can speak to the device.  What Ed did (and I
read Tony to be referring to) was to be able to bypass the use of twain
drivers by placing calls to the ASPI layer when contacting the native
device driver and having his software speak to and with the device from
within his software.  In so doing, VS is able to communicate with the
device via its device driver without employing or calling up the
associated OEM scanner software that is connected to the OEM's device
driver.  Thus, you can operate the scanner from within VS using VS and
not the OEM scanning software that comes with or is incorporated in the
OEM native device driver.

The question here - again - is whether or not there is an ASPI layer
available that is written in or supports 64 bit architecture and if
there are core native 64 bit device drivers for the device available
beneath the ASPI layer.

----Original Message----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk] On Behalf Of
lotusm50@sprynet.com
Sent: Wednesday, May 31, 2006 10:12 AM
To: laurie@advancenet.net
Subject: [filmscanners] Re: large scanning project

> Let's be clear.  When Ed says that Vuescan "supports" a
> scanner all that means is that the software is designed to
> work with that scanner.  That does not mean that he has
> device drivers for these scanners so that they work in any
> given OS. All the scanners he "supports" in 32 bit must use
> their manufacturer-supplied device drivers in order to work
> with or without Vuescan.  The Vuescan software already works
> with the Win x64 OS.  I have it on my computer, it just
> doesn't recognize that there are any scanners attached
> because the scanners do not have 64 bit device drivers loaded.
>
> You need to ask him whether he can produce 64 bit device
> drivers for scanners that don't have them.  Or you can ask
> him whether the scanners will work with Vuescan without their
> appropriate driver -- but I know the answer to that (and it's "no").
>
>
> Tony Sleep wrote:
>> On 31/05/2006 Tony Sleep wrote:
>>
>>> I would suggest you ask Ed about 64bit support for all the scanners
>>> he currently supports in 32bit.
>>>
>>
>> In fact I've just mailed him and asked. I'll copy his response here.
>> I'll have a virtual $5 on the answer being 'no problem' :-)
>>
>> Tony Sleep
>>
>>
>
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