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From: guyd@austin.ibm.com (Guy Dawson)
Subject: Re: [386bsd] Looking for suggestions for a SCSI controller
Originator: guyd@pal500.austin.ibm.com
Sender: news@austin.ibm.com (News id)
Message-ID: <C63K24.1wBI@austin.ibm.com>
Date: Mon, 26 Apr 1993 15:22:52 GMT
References: <1993Apr24.165243.10375@sophia.smith.edu>
Organization: IBM Austin
Keywords: SCSI, 386bsd
Lines: 35
In article <1993Apr24.165243.10375@sophia.smith.edu>, jfieber@sophia.smith.edu (J Fieber) writes:
> I have a new PeeCee running 386bsd (and ms-dog). It is a
> 486dx-33/ISA with a vesa local bus. Now I would like to hook up
> two SCSI drives (both Quantum) and a tape drive (Archive).
>
> What is a good deal on a SCSI controller? I hear that some ISA
> controllers (adaptec) that use DMA don't work with more than 16
> meg of ram which would be a Bad Deal.
All ISA controllers that use DMA are limited to the first 16MB of RAM. This is
a limitation in that the ISA bus only has 24 address lines. Drivers can over
come this my doing the DMA to/from memory below 16Mb and then have the cpu move
it above the 16MB point...
Are there any VL bus
> boards that would work?
>
Sorry, don't know!
> Thanks in advance.
>
> -john
>
> --
> === jfieber@sophia.smith.edu ================================================
> ======================================= Come up and be a kite! --K. Bush ===
Guy
--
-- -----------------------------------------------------------------------------
Guy Dawson - Hoskyns Group Plc.
guyd@hoskyns.co.uk Tel Hoskyns UK - 71 251 2128
guyd@austin.ibm.com Tel IBM Austin USA - 512 838 3377