[parisc-linux] Which Memory to use on a 715/80?

Fri, 11 Oct 2002 09:52:28 +0200

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> -----Original Message-----
> From: Harri Haataja [mailto:harri.haataja@smilehouse.com]
>=20
> On Thu, Oct 10, 2002 at 05:34:47PM +0200, "Beerse, Corn=E9" wrote:
> > > -----Original Message-----
> > > From: Grant Grundler [mailto:grundler@dsl2.external.hp.com]
> > > Derek Engelhaupt wrote:
> > > > Well, don't think any other manufacturer made memory for the =
715
> > > > series.  I have looked at Dataram and others, but they only =
seem
> > > > to have memory for the D,K,N,L, and A class servers.
> > > I thought Kingston *did* (maybe no more).
> > I recal by head (and might be wrong) to have used pc-based memory
> > modules in a 712/80. There was something with parity (it needs it =
or
> > it hates it, don't know).
>=20
> You usually hear that HP uses similiar form but completely different
> ram. But that's mostly on 715/735/800, maybe 712 was different. That
> would be a pleasant surprise.
> Mostly you always want parity. I would doubt anything explicitly
> demanding no parity.

Harri is right here, I was mixing SunSparc and HP-PARisk architectures. =
The
712 memory does NOT fit (without a hamer).

>=20
> > Try what the bootloader says if you fit it with pc-based memory
> > modules, that have the same physical lay-out. (edo-ram is a=20
> term that
> > comes to mind, try it or it's predecessor).
>=20
> EDO AFAIK never occurs together with ECC so that's the word to avoid
> when looking for ram for older workstations ad servers.
> 36-bit FPM True-parity ECC SIMMs are what work in, for example, DEC
> Alpha AXPpci, Multia, SGI Indy, Indigo=B2, matching Challenges,=20
> IBM RS6000
> 7006 and other machines of the era and most(?) pc's. No kind=20
> of EDO ram
> works.
>=20
> > I might be totaly wrong here, in those days (a former job)=20
> I was using
> > both SunSparc stations and HP 712 machines.
>=20
> Sparcstations mostly use weird rams like JEDEC DIMM's apart from the
> very old ones that use 36-pin simm's that seem regular.

Sun Sparc ELC and SunSparcClassic (and similar Sparc 4C architecture?) =
can
use the same memory modules as 486-PC's. Those are NOT edo ram as in
pentium-pc's, however they do fit... It might not be what Sun tells, it =
is
wat is currently running at home...

>=20
>=20
> This is what I remember. No guarantees either.

I've tried EDO ram in a SParc Classic but it does not show up. After a =
short
test (15 minutes power on and try to use it) I experienced no damage on =
both
processorboard or memory. Then, again: no guarantees...

>=20
> --=20
> I used to herd dairy cows. Now I herd lusers. Apart from the=20
> isolation,
> I think I preferred the cows. They were better conversation, easier =
to
> milk, and if they annoyed me enough, I could shoot them and eat them.
> 		-- Rodger Donaldson=20

Now I know where the name "tucows" comes from ;-)

CBee

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<TITLE>RE: [parisc-linux] Which Memory to use on a 715/80?</TITLE>
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&gt; -----Original Message-----
 &gt; From: Harri Haataja [<A =
HREF=3D"mailto:harri.haataja@smilehouse.com">mailto:harri.haataja@smileh=
ouse.com</A>]
 &gt; 
 &gt; On Thu, Oct 10, 2002 at 05:34:47PM +0200, =
&quot;Beerse, Corn=E9&quot; wrote:
 &gt; &gt; &gt; -----Original Message-----
 &gt; &gt; &gt; From: Grant Grundler [<A =
HREF=3D"mailto:grundler@dsl2.external.hp.com">mailto:grundler@dsl2.exter=
nal.hp.com</A>]
 &gt; &gt; &gt; Derek Engelhaupt wrote:
 &gt; &gt; &gt; &gt; Well, don't think any other =
manufacturer made memory for the 715
 &gt; &gt; &gt; &gt; series.&nbsp; I have looked at =
Dataram and others, but they only seem
 &gt; &gt; &gt; &gt; to have memory for the D,K,N,L, =
and A class servers.
 &gt; &gt; &gt; I thought Kingston *did* (maybe no =
more).
 &gt; &gt; I recal by head (and might be wrong) to =
have used pc-based memory
 &gt; &gt; modules in a 712/80. There was something =
with parity (it needs it or
 &gt; &gt; it hates it, don't know).
 &gt; 
 &gt; You usually hear that HP uses similiar form but =
completely different
 &gt; ram. But that's mostly on 715/735/800, maybe =
712 was different. That
 &gt; would be a pleasant surprise.
 &gt; Mostly you always want parity. I would doubt =
anything explicitly
 &gt; demanding no parity.

Harri is right here, I was mixing SunSparc and =
HP-PARisk architectures. The 712 memory does NOT fit (without a =
hamer).

&gt; 
 &gt; &gt; Try what the bootloader says if you fit it =
with pc-based memory
 &gt; &gt; modules, that have the same physical =
lay-out. (edo-ram is a 
 &gt; term that
 &gt; &gt; comes to mind, try it or it's =
predecessor).
 &gt; 
 &gt; EDO AFAIK never occurs together with ECC so =
that's the word to avoid
 &gt; when looking for ram for older workstations ad =
servers.
 &gt; 36-bit FPM True-parity ECC SIMMs are what work =
in, for example, DEC
 &gt; Alpha AXPpci, Multia, SGI Indy, Indigo=B2, =
matching Challenges, 
 &gt; IBM RS6000
 &gt; 7006 and other machines of the era and most(?) =
pc's. No kind 
 &gt; of EDO ram
 &gt; works.
 &gt; 
 &gt; &gt; I might be totaly wrong here, in those =
days (a former job) 
 &gt; I was using
 &gt; &gt; both SunSparc stations and HP 712 =
machines.
 &gt; 
 &gt; Sparcstations mostly use weird rams like JEDEC =
DIMM's apart from the
 &gt; very old ones that use 36-pin simm's that seem =
regular.

Sun Sparc ELC and SunSparcClassic (and similar Sparc =
4C architecture?) can use the same memory modules as 486-PC's. Those =
are NOT edo ram as in pentium-pc's, however they do fit... It might not =
be what Sun tells, it is wat is currently running at home...

&gt; 
 &gt; 
 &gt; This is what I remember. No guarantees =
either.

I've tried EDO ram in a SParc Classic but it does not =
show up. After a short test (15 minutes power on and try to use it) I =
experienced no damage on both processorboard or memory. Then, again: no =
guarantees...

&gt; 
 &gt; -- 
 &gt; I used to herd dairy cows. Now I herd lusers. =
Apart from the 
 &gt; isolation,
 &gt; I think I preferred the cows. They were better =
conversation, easier to
 &gt; milk, and if they annoyed me enough, I could =
shoot them and eat them.
 &gt; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -- Rodger Donaldson

<P><FONT SIZE=3D2>Now I know where the name &quot;tucows&quot; comes =
from ;-)</FONT>
</P>
<BR>
<BR>

<P><FONT SIZE=3D2>CBee</FONT>
</P>

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