Subject: Re: DEFZA PMAF-A support
To: Jason R Thorpe <thorpej@zembu.com>
From: Maciej W. Rozycki <macro@ds2.pg.gda.pl>
List: port-pmax
Date: 07/02/2001 10:07:15
On Sun, 1 Jul 2001, Jason R Thorpe wrote:
> > DEFZA PMAF-A/PMAF-C FDDIcontroller 700 interface Older FDDI interface
> > card prior to DEFTA. There are variations of connectors; DAS, SAS,
> > Copper ThinWire and Shielded Twisted Pair (STP). This may just be a
> > case of testing the card. If it doesn't work, support should not be
> > too hard to add.
>
> Well, that paragraph lies :-) The DEFZA is totally different from the
> DEFTA.
Not totally -- the MAC chipsets used on both cards appear to be
compatible with each other. ;-) At least the formats of the packet
request header are, and the header is visible to a driver.
The paragraph appears to be completely bogus, indeed. In particular,
there is no DAS version of the DEFZA and there is no PMAF-C (DEFZA-CA is
PMAF-A just like DEFZA-AA; I'm not sure if they are distinguishable from
the driver's point of view at all).
> > so, i've got a PMAF-AA that i would like to get working in a 3MAX+ that i've
> > got here, and was wondering what would be required to get it to work. anyone
> > know what to do? let me know what i should do to test this, or to get any
> > information that you would need to you.
>
> Well, if you'd like to embark on writing a device driver for it, I can
> provide some advice. I think I know where to get a datasheet for it, too.
The guys at DEC appear to have lost it, if we are thinking of the same
doc... :-( Also I doubt it documents all the quirks the firmware has
(well, I have version 1.1 and that's quite old; they might have fixed them
later, but a sane driver must assume the worst anyway).
--
+ Maciej W. Rozycki, Technical University of Gdansk, Poland +
+--------------------------------------------------------------+
+ e-mail: macro@ds2.pg.gda.pl, PGP key available +