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Date:      Wed, 16 Aug 1995 18:45:57 -0400
From:      "Danny J. Zerkel" <dzerkel@feephi.phofarm.com>
To:        freebsd-hardware@freebsd.org, jmb@kryten.atinc.com
Subject:   Re: i82424ZX vs i82424TZ cache dram controller
Message-ID:  <199508162245.SAA03280@feephi.phofarm.com>

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"Jonathan M. Bresler" <jmb@kryten.atinc.com> writes:
>anyone able to clue me in on the diffs between the Zx and the Tx ??
>
>i just picked up a book _pci_system_architecture_ from mindshare.  cost 
>$5 and talks about the i82420 TX  pci chipset.  is this the saturn 
>chipset vs saturn ii chipset ?
>
>	why was the saturn chipset replaced--new features or faulty 
>chipset ?

Intel usually makes the letter change when the update the chip's revision
number.  More than likely, the TX is a 60/66MHz chip and the ZX has been
updated to support 75/90/100MHz.  There are probably some other changes.
I've been planning on updating the pcisupport.c code to reflect this chip,
just haven't picked up the book yet.

Danny J. Zerkel
Photon Farmers
http://www.phofarm.com/



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