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ultraplex40 not working correctly in burst mode - 7/30/2002 4:10:35 PM   
stuartl

 

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I've got an ultraplex40 and it's connected to an adaptec 2940UW controller. When i run NERO cd speed it tells me the burst rate is 1MB/s, which for an ultascsi device is pants as it should be around 20MB/s. I'm running XP on an ABIT BD7II, anyone any ideas why i'm getting such a bad burst rate?
All the other scores in Nero cd speed appear to be about right, averages 30X across the disk with it getting to a fraction below 40 at teh outside.

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RE: ultraplex40 not working correctly in burst mode - 7/30/2002 5:32:24 PM   
john

 

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Try to enabled reading caching under the drive's properties

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RE: ultraplex40 not working correctly in burst mode - 7/31/2002 9:29:01 AM   
stuartl

 

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sorry if this is a really stoopid question but how do i enable caching for the drive?


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RE: ultraplex40 not working correctly in burst mode - 7/31/2002 2:44:59 PM   
john

 

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Under ControlPanel->MyComputer->CD-ROMS->Plextor 40X CD-ROM->PROPERTIES

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RE: ultraplex40 not working correctly in burst mode - 7/31/2002 3:07:48 PM   
stuartl

 

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hmmmm. not got a "my computer" under control panel - got system and hardware, device manager and in there i can find the cdrom but under properties there isn't an option to enable cache. There are 4 tabs - general/properies/volumes/driver. General only has a troubleshoot button, properties only lets you change the volume level, volume has nothing as there isn't a cd in and driver just has driver stuff.
Another winXP mystery?


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RE: ultraplex40 not working correctly in burst mode - 7/31/2002 3:54:25 PM   
Laffin Assassin


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Hi stuartl
Have you got the latest firmware for you Plextor ultraplex40 just check at :-
http://www.plextor.be/English/technical/downld_firmw_40TS.html
This sometimes helps !!!

Laffin Assassin

It's Nice to be Important!!!
But it's more Important to be NICE!!!

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RE: ultraplex40 not working correctly in burst mode - 7/31/2002 4:00:34 PM   
stuartl

 

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think so, got 1.13


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RE: ultraplex40 not working correctly in burst mode - 7/31/2002 4:24:04 PM   
Laffin Assassin


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Yeah that is the latest version sorry to say, I have even tried to find you a new XP driver for your SCSI Adaptor but all Adaptec say is they no longer make the 2940UW so no new XP driver. Even John makes mistakes there is no Cache control in XP where he told you it was and as I never use it I have no Idea were it is for a SCSI CD-ROM sorry ! Have you tried using the latest Plextor Tools you can get them from their Website !!!

Laffin Assassin

It's Nice to be Important!!!
But it's more Important to be NICE!!!

(in reply to stuartl)
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RE: ultraplex40 not working correctly in burst mode - 7/31/2002 5:23:57 PM   
stuartl

 

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yeah, tried the new driver root and came to the same conclusion. Just tried a Qlogic 1020 card and it's the same with it. Either XP is screwed up or the scsi interface on the drive isn't working correctly. NOt sure that i can be bothered with the hassle of installing 98 again to find out or maybe this is teh time to set my machine up to dual boot....


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RE: ultraplex40 not working correctly in burst mode - 8/1/2002 2:30:30 AM   
john

 

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Actually was refearing for the Sync Data Transfer Rate. Under Win9X there is such option but no at XP. Try reading our TIPS->Win2k tips to see how activate it

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RE: ultraplex40 not working correctly in burst mode - 8/6/2002 5:41:42 AM   
ntloser

 

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I get the same results with Ultra PleX Wide using the latest firmaware


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RE: ultraplex40 not working correctly in burst mode - 8/6/2002 7:59:27 PM   
arsMatrix

 

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Same results here with UltraPleX Wide and firmaware 1.05

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RE: ultraplex40 not working correctly in burst mode - 8/6/2002 8:04:48 PM   
Laffin Assassin


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Hi All
I have just installed one into one of my other computers and I get the same as everyone else 1MB/s so this looks like it is the standard but I am going to look into it further then I will let you all know as soon as I find something out !!!

Laffin Assassin

New Hardware & Software isn't released it's allowed to escape !!!

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Post #: 13
RE: ultraplex40 not working correctly in burst mode - 8/7/2002 6:21:47 AM   
Clint


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Enable DMA (Direct Memory Access) and see if situation improves!

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    Edited by - Clint on 08/07/2002 06:23:05

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    RE: ultraplex40 not working correctly in burst mode - 8/7/2002 6:16:04 PM   
    Laffin Assassin


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    Hi Clint
    And how do you enable DMA on a scsi Plextor UltraPlex 40x CD-Rom in Windows XP

    Laffin Assassin

    New Hardware & Software isn't released it's allowed to escape !!!

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    Post #: 15
    RE: ultraplex40 not working correctly in burst mode - 8/7/2002 6:45:15 PM   
    Graffitti

     

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    acutally. I don't think you can enable DMA for scsi. Remember, DMA is something that was developed for IDE, not SCSI. You're trying to use something from one interface on another which doesn't quite work. What you'll want to do is check the settings on the scsi controller in your device manager.


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    Post #: 16
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