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Date:	Sun, 1 Dec 2002 10:32:20 PST7
From:	"Steven Levine" <steve53@earthlink.net >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: Adding a second SCSI adapter

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In <3DE99FAC.4000401@san.rr.com>, on 11/30/02
at 09:35 PM, Tom Brown said:

Just to add a bit to what Harry said.

>scanner is ISA and my current motherboard has no ISA slots. I got some
>advice from HP Tech Support that I should "dumb down" the SCSI interface
>by removing parity checking, etc. to make the HP5 work. Currently, it

That's an odd recommendation. More worthwide would be things like
suppressing wide negotiation and sync negotiation and dropping the bus
speed to 5MBs.

>hangs my system if I try to boot with the HP5 attached to my main SCSI
>adapter. My system is all SCSI: LSI Logic SYM21002 dual channel with

When does it hang? During the BIOS bus scan or elsewhere? I'd have to
see a connection diagram to be sure, but most often bus hangs are
termination issues or inadvertent Y-configurations, although if I am
visualizing your layout correctly, I'd suspect termiation first.

>I want to add a TekRam DC-315/U SCSI adapter that I have on hand to
>handle the scanner to keep it seperate from the rest of the system. It
>seems that the last time I tried this, it somehow trashed my system, so
>I'm a bit leery of doing this.

Assuming the card is not defective, It really should not cause any
problems.

>Any wisdom as to whether one can safely add a second, different SCSI
>adapter?

Everything's supposed to play nice together, but with mix and match you
never know. I ran and 2940UW and an DC390U in the same box for a long
time and overall I've had good success with TekRAM and Adaptec cards.
However, I recently had to swap in an Adaptec 2940 to replace the DC-390U
to solve a specific DAT vs. BA2K problem reared up during a hardware
upgrade.. However, I'm close to 100% sure the defect in in BA2K's ASPI
driver. The DC-390U is working fine in it's new home.

Steven

--
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"Steven Levine" MR2/ICE 2.35 #10183 Warp4/FP15/14.085_W4
www.scoug.com irc.webbnet.org #scoug (Wed 7pm PST)
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