Subject: RE: purchasing decisions
To: current-users <current-users@sun-lamp.cs.berkeley.edu>
From: Burgess, David (TSgt) ~U <BurgessD@J64.STRATCOM.AF.MIL>
List: current-users
Date: 01/12/1994 15:50:00
>I am going to get an EISA SCSI controller. I'm told the Ultrastor 24F
>works fine with NetBSD-current. The cheapest I can get a new one so
>far is $349. There is a Buslogic 742A that I can get for about $255,
>also. Is this Buslogic card as good as the Ultrastor 24F (full EISA
>busmastering) and former Adaptec 1742? And, will the Buslogic work
>with NetBSD-current as it stands? Any comments on which EISA SCSI
>card to buy? (I haven't been able to find any unsold new 1742's
>laying around anywhere.)
>
I have heard reports that the BusLogic 742A is a known working disk drive
controller. It looks (to software) like a 1742, if I remember correctly.
Julian posted a note not too long ago that said that he had a working U24F
driver, but he had no way to test it. The Ultrastore 24F I was using is in
a machine about 1200 miles and another assignment away from here.
There are numerous reports that the 1742 works (see the FAQ for more
information on the 1742). I don't see how you can go wrong whichever way
you go.
I understand that the 2742 is a hard nut to crack, although if anyone can,
Julian can. (Shameless plug not omitted).
>I'm thinking about buying the Maxtor 7340s 340meg SCSI drive to go
>with it. Sound like a good drive?
>
I used a 7340s with an Ultrastor 24F that I was running in IDE emulation
mode (before Julian got the SCSI mode working) and I was nothing but pleased
with it. I was running 32Meg of memory and had uptimes of up to a month
once.
>Oh, even laster... I assume the only thing that causes problems above
>16meg is the hard drive controller. If I install an EISA hard drive
>controller, I won't have any problems going over 16meg of RAM,
>correct? My (16-bit ISA) ethernet card isn't going to need to access
>memory directly, causing problems, is it?
>
It doesn't do direct DMA access, does it? If not, then I would assume that
you will be in good shape once you load up one of those EISA cards. There
is a reasonable explanation of this in the FAQ. If you still have questions
after you read through that, drop me a line.
>Thanks for any and all help!
>
> --Michael
Anytime.
TSgt Dave Burgess
FAQ Maintainer in my off time.
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