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#11
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What drivers are you talking about?
The latest from BenQ are v2.01 and the ones on the CD are v1.1. I also tried v2.0 which I happened to have somewhere. All three of them fail in the same way. Are you confusing the ScanWit 2720S with another model? Regards, Tony Mr. Chuck wrote: The latest drivers for the Benq do not work, I opened a ticket with Benq and they told me to revert to the original drivers ver. 3.40 and the scanner works fine. MrC "Tony" wrote in message ... Hi, I'm having some troubles with my scanners... HW setup: PC + Adaptec 1542CF + Adaptec 2904 Acer (now BenQ) ScanWit 2720S Filmscanner Microtek Phantom 336 Flatbed Both scanners connected to the 1542CF, film scanner first, then flatbed. then terminator. Both working flawlessly when I run with WinNT 4.0 (SP6a). Apparently there is no HW problem (?). However... running W2k SP4 I can't get them to work properly. Both devices are detected properly and I installed the latest drivers. But when I try to scan anything (no matter which scanner) they start doing so, e.g. the film scanner is focussing, but after a while the procedure stops and some time later I get a timeout and the scnner isn't recognised anymore. After a power cycle the scanner regains consciousness and I can again start scanning but it hangs at the same step as before. What I've tried so far: *) Removed all TWAIN drivers *) Removed all SW that uses ASPI (surprisingly many) *) Tried about a half dozen different ASPI layers *) Tried TWAIN dll's from twain.org *) Removed one scanner (tried each) from SCSI chain And of course I have installed/uninstalled the drivers at all stages and rebooted every time. Also I made sure that when uninstalling the files really disappear (quite often there are leftovers) and that the registry is clean (?). The SCSI drivers in my system are aha154x.sys and aic78xx.sys (both from the W2k CD)I have re-installed these from the CD as well, but the files were identical and - of course - it didn't help any. And yes, I've tried Vuescan. Same story... I'm runnig out of ideas. Suggestions anyone? sigh Tony |
#12
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"Mac McDougald" wrote in message
. .. In article , see_reply- says... Neither does any other Windows. I assure you than no version of Windows will run a SCSI scanner withOUT ASPI. Sure it will. Scanner drivers are imaging miniports, or WDM drivers that use SCSI pass-through. Neither use APSI nor implement TWAIN. Of course if you have an ancient scanner it may not have Win 2K/XP drivers. |
#14
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"Mac McDougald" wrote in message
In article , says... "Dave" wrote in message news:30gic.2$en3.0@edtnps89... First, I'm no expert in this area; the following is my PERSONAL experience with ASPI and Win2K (Folkert take note): I had similar problems writing to my CD writer using programs that require ASPI under Win2K... Win2k does not use the ASPI layer Neither does any other Windows. I assure you Well that is your problem. So you are saying that no SCSI scanner will support TWAIN? than no version of Windows will run a SCSI scanner withOUT ASPI. Windows does not "run" scanners. Windows itself does not use ASPI (nor TWAIN). ASPI (and TWAIN) are programming interfaces used by programs. Mac |
#15
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Sorry, wrong model...
MrC. "Tony" wrote in message ... What drivers are you talking about? The latest from BenQ are v2.01 and the ones on the CD are v1.1. I also tried v2.0 which I happened to have somewhere. All three of them fail in the same way. Are you confusing the ScanWit 2720S with another model? Regards, Tony Mr. Chuck wrote: The latest drivers for the Benq do not work, I opened a ticket with Benq and they told me to revert to the original drivers ver. 3.40 and the scanner works fine. MrC "Tony" wrote in message ... Hi, I'm having some troubles with my scanners... HW setup: PC + Adaptec 1542CF + Adaptec 2904 Acer (now BenQ) ScanWit 2720S Filmscanner Microtek Phantom 336 Flatbed Both scanners connected to the 1542CF, film scanner first, then flatbed. then terminator. Both working flawlessly when I run with WinNT 4.0 (SP6a). Apparently there is no HW problem (?). However... running W2k SP4 I can't get them to work properly. Both devices are detected properly and I installed the latest drivers. But when I try to scan anything (no matter which scanner) they start doing so, e.g. the film scanner is focussing, but after a while the procedure stops and some time later I get a timeout and the scnner isn't recognised anymore. After a power cycle the scanner regains consciousness and I can again start scanning but it hangs at the same step as before. What I've tried so far: *) Removed all TWAIN drivers *) Removed all SW that uses ASPI (surprisingly many) *) Tried about a half dozen different ASPI layers *) Tried TWAIN dll's from twain.org *) Removed one scanner (tried each) from SCSI chain And of course I have installed/uninstalled the drivers at all stages and rebooted every time. Also I made sure that when uninstalling the files really disappear (quite often there are leftovers) and that the registry is clean (?). The SCSI drivers in my system are aha154x.sys and aic78xx.sys (both from the W2k CD)I have re-installed these from the CD as well, but the files were identical and - of course - it didn't help any. And yes, I've tried Vuescan. Same story... I'm runnig out of ideas. Suggestions anyone? sigh Tony |
#16
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In article , see_reply-
says... "Mac McDougald" wrote in message In article , says... "Dave" wrote in message news:30gic.2$en3.0@edtnps89... First, I'm no expert in this area; the following is my PERSONAL experience with ASPI and Win2K (Folkert take note): I had similar problems writing to my CD writer using programs that require ASPI under Win2K... Win2k does not use the ASPI layer Neither does any other Windows. I assure you Well that is your problem. So you are saying that no SCSI scanner will support TWAIN? than no version of Windows will run a SCSI scanner withOUT ASPI. Windows does not "run" scanners. Windows itself does not use ASPI (nor TWAIN). ASPI (and TWAIN) are programming interfaces used by programs. Thanks for the precise definition, but point is still that SCSI scanner won't work without ASPI in the Windows environment. Mac |
#17
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No, your unsupported scanner does not have Win 2K/XP drivers.
"Mac McDougald" wrote in message .. . Well that is your problem. So you are saying that no SCSI scanner will support TWAIN? than no version of Windows will run a SCSI scanner withOUT ASPI. Windows does not "run" scanners. Windows itself does not use ASPI (nor TWAIN). ASPI (and TWAIN) are programming interfaces used by programs. Thanks for the precise definition, but point is still that SCSI scanner won't work without ASPI in the Windows environment. Mac |
#18
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In article ,
says... No, your unsupported scanner does not have Win 2K/XP drivers. If we are speaking of any actual SCSI consumer scanners (and this thread was), then of course anyone with a SCSI scanner knows that Mac is correct. SCSI consumer scanners absolutely do require ASPI in XP to work. It is true that W2K/XP does provide an alternate Microsoft SCSI API, and SCSI hard disk drivers and SCSI CD drivers do use it instead of ASPI. The idea is then they can no longer bypass Windows security to access system protected disk files, which is why Microsoft discouraged ASPI. I suppose your point was that the scanner driver **could** have been rewritten that way too. My point is that it wasnt. Consumer scanners simply didnt do it, and they do still require ASPI if you want them to work in XP. Actually consumer scanners instead abandoned SCSI and converted to Firewire, etc. The commerical 10-20 ppm class of office document scanners largely stayed with SCSI so far, and generally use ISIS instead of TWAIN, and I'd guess ISIS probably no longer uses ASPI, to keep Microsoft happy. But SCSI consumer scanners still require ASPI, and this is the first thing to know to make a SCSI scanner work in XP. -- Wayne http://www.scantips.com "A few scanning tips" |
#19
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#20
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The
idea is then they can no longer bypass Windows security to access system protected disk files, which is why Microsoft discouraged ASPI. Thought it was a licensing thing between MS and Adaptac that left it out of W2K and XP? Or fact that Adaptec didn't have an updated version ready, or combo of both? Mac |
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