SCSI - XP freezes when I turn on the EMU?

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SCSI - XP freezes when I turn on the EMU?

Postby tpotcardiff » Wed Jul 06, 2011 3:45 pm

so i got an adaptec scsi card AVA-2906.

It seems to have installed ok on my PC running XP.

I have a cable to go from the small SCSI to the larger SCSI on the EMU - but when I power it up XP freezes, and un-freezes if I unplug the cable.....

I tried having the EMU powered up then plugging in the SCSI cable but get a fatal error on the EMU.

I picked up a 'spare' E6400 Ultra the other day for cheap & that does the same as my E5000.

Any ideas?

(edit) it does this when I connect a SCSI CD ROM drive aswell.... so could be the scsi card/cable???
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Re: SCSI - XP freezes when I turn on the EMU?

Postby Rascal Revenge » Wed Jul 06, 2011 8:24 pm

Aargh... guess I read this from you in another of your posts already, so warning:

NEVER EVER !!! connect or disconnect SCSI-cables with powered-on sampler(s) and/or PC, i.e. SCSI-cards.
You may destroy the samplers by doing so, hope you did not.
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Re: SCSI - XP freezes when I turn on the EMU?

Postby tpotcardiff » Thu Jul 07, 2011 11:36 am

oops,

no didnt destroy the sampler :grin: . thanks for the warning :shock: ...

jeez. just gonna get to bouncing out some noises instead of worrying about all this SCSI business for the time being......

I managed to get a 160gig drive in that a customer gave me from her desktop (with an EMU HD kit from ebay) so that is one thing done.
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Re: SCSI - XP freezes when I turn on the EMU?

Postby JAHFUNK » Thu Jul 07, 2011 11:53 am

tpotcardiff wrote:
(edit) it does this when I connect a SCSI CD ROM drive as well.... so could be the scsi card/cable???

If your also having problems with the cd-rom It's probably not the card, I think it's the cable .
Check your devices are on different SCSI channels.
Try a different cable.
And as mentioned by Rascal Revenge never connect SCSI cables after a power up.
You might get away with this a number of times but it could easily be....
......Bye Bye sampler......
Image
Image
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Re: SCSI - XP freezes when I turn on the EMU?

Postby qwertz123 » Tue Jul 12, 2011 8:02 pm

Hi !
I had simular problems several times before.
Mostly it was an IRQ conflict of the SCSI-PCI-controller card with other internal computer parts.
The PC ran stable for hours, but when I tried to access the SCSI-chain it locked up directly, sometimes with a bluescreen, sometimes it just froze with no reaction at all.

Try to plug the SCSI-card into another PCI-Slot on the mainboard, or to deactivate other computer components, that are not needed/ not used via the PC-BIOS.
You have to know what you are doing then should be added, never switch off anything that is unknown, it might have fatal results.

You can check the IRQ-usage of your PC at bootup, often your bios shows a message there which components are listed and the IRQ-channels they do use.
There are also several PC-tools that show the IRQ-setup like sysoft sandra or everest home, these are older programs, I do not know the new tools here.
There is also a function in windows to view your configuration
Start - Programs - Accessories - System Tools - System Information - Hardware Resources - IRQ

I did mostly have real problems and freezes, when the SCSI-card used the same IRQ as the graphic-card, or if it used the same IRQ then the IDE or S-ATA controller.
Also sharing IRQ with USB port is problematic most times.
Some BIOS have the option to change which IRQ-channel is given to which PCI-slot / IRQ asssignment. You have to look into the manual for detailed information here.
The PCI-slot directly next to the graphic card often shares the IRQ with the graphic adapter, no matter if is AGP or PCI-express.
So my tip is not to use this !

Freezes can also appear if the SCSI-bus is not terminated correctly, sometimes you have to use an active terminator plug at the end of the last SCSI-port.

Hope it helps, Volker
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Re: SCSI - XP freezes when I turn on the EMU?

Postby tpotcardiff » Wed Aug 03, 2011 2:05 pm

nice one guys.

cheers for the explosion warning ;)

anyways, got a zip drive yesterday - it works brillaintly.

Had my first 7+ hour (fun) tune making session in years. Love the Emu 8-)
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