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New Procs, SCSI Woes

K

Kano

Senior member
Hello,

Got a pair of new procs for a dual board that was presently running dual 350's. The new procs are p3-533b's and I adjusted the bios as such to support the 133fsb. The systems detects the procs, posts just fine but after just swapping the procs I received a drive read error. As a result I formatted the system and was planning to reinstall win2k. The format failed with something mentioned about a possible termination problem.

There are 2 drives on the system attached to an adaptec 2940uw card. The cable only supports 2 drives and I have tried it with both plugged in or a single plugged in with terminator. The drives were working just fine with the 350 mhz procs and 100fsb.

Anyone have any ideas? The bios of the 2940uw is Auto Termination.

Thank you!

Kano
 
Does the chipset you are using support a 133mhz fsb? If not it could be upping the pci bus speed too which could cause problems if the scsi adapter cannot handle it.
 
Well the board is a Rioworks PDB-R mainboard on the BX chipset. It does indicate it supports the p3 up to a 850 I believe. THe bios also allows me to crank it all the way up to 133.
 


<< Well the board is a Rioworks PDB-R mainboard on the BX chipset. It does indicate it supports the p3 up to a 850 I believe. THe bios also allows me to crank it all the way up to 133. >>



The i440BX was only spec'ed to go up to 100mhz bus, so this is probably upping the pci bus and the scsi controller cant handle it. Try putting the bus at 100mhz and see if that fixes the problem.
 
alot of bx boards have a 1/4 pci divider at 133fsb though your video card will be running at 89MHz which only so many videocards can function at!
have you got the termination set only on the last drive on the chain??
what stepping are those cpus??
 


<< alot of bx boards have a 1/4 pci divider at 133fsb >>



Hopefully his board does. I knew some boards had this (but I had forgotten what it was called and stuff), but didnt know which ones or how many.
 
533eb SL3N6
533eb SL3X6

Boy I am confused now. The drives are scsi sca with converters. 2 drives attached to the 2940uw with auto termination set on the card. The odd part the board seems to function just fine on IDE drives. I am using a tnt2u agp card.

So does this mean I cannot run the chips at 533?
 
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