[7733] in linux-scsi channel archive
Re: NCR53c875J or NCR53c875E?
daemon@ATHENA.MIT.EDU (Gerard Roudier)
Mon Dec 20 08:27:18 1999
Date: Mon, 20 Dec 1999 15:41:58 +0100 (MET)
From: Gerard Roudier <groudier@club-internet.fr>
To: Robert Johannes <rjohanne@piper.hamline.edu>
Cc: linux-scsi <linux-scsi@vger.rutgers.edu>
In-Reply-To: <385DD889.451B3280@piper.hamline.edu>
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On Mon, 20 Dec 1999, Robert Johannes wrote:
> Gerard,
> Do you know which one of these Symbios chipsets is the latest? The one
> with a "J" or the one with an "E"?
"E" probably, but the chip revision id should be a more accurate info.
- E means that the device supports power management features (not used for
now under Linux).
- J means that is supports JTAG
- N means JTAG support but not big-endian mode that is a never used
feature, I think.
- B addresses the package (208 pin plastic versus 169 blah blah ...)
- Etc ... I don't know the meaning about the other 22 possible letters.;-)
Things like J, JB, E, JE, JBE, ... exists.
The relationship between chip revision and actual chip type may just not
exist. I remind having asked Pamela Delanney from LSI LOGIC a couple of
months ago, but it was hard for her to gather the information.;) Further
sym/ncr driver versions will display 875 for everything that incorporates
one or two 875 cores, for simplicity and in order not to output wrong
info.
Gérard.
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