🚀 go-pugleaf

Craig Dewick wrote:
> 
> In <34B0B8DF.735A@enterprise.net> John Robertson <robo@enterprise.net> writes:
> 
> >I'm confused about what simms will and will not
> >work with a SLC. I've read the faq and that suggests
> >that it will only take 4meg simms. However I'm shure I
> >read in this or related news group a meesage about using
> >16meg simms with this model. Has anyone any experiance of
> >this? and if so - can you use the cheaper generic parity
> >simms? (I guess that also applies to the 4meg simms also)
> 
> Ok, SLC's will definitely *not* work with 16 meg SIMM's. I've tried some
> full-parity 16 meg SIMM's and the machine dies a horrible death. Maybe this
> could be something that was fixed with later bootROM versions?

When I first got my SLC I used 4 16M (4Mx36) SIMMS until I could find 4M
SIMS.
It worked fine even though I was "wasting" 48 meg of ram.  The SLC just
treated
the 16M simms as if they were 4M simms.  Seemed to work fine if I mixed
4M and
16M simms too.  Rom monitor version 1.4.
 

> Make sure that the SIMM's you use are *full* parity (ie. there must not be
> any unfilled device locations on each RAM module like the more regular
> single-bit parity SIMM's have), otherwise the RAM tests fail.

I believe the FAQ says the SLC only really needs one bit of parity and 
ignores the other 3 bits if you use "full parity" 36-bit simms.  Sun
originally sold this with 33-bit simms - one bit of parity per
doubleword.

By the way - this SLC runs fine with Solaris 5.5.1.  Even able to run
openwin 
plus some large apps like CiscoWorks for Switched Internetworks, RMON
packages,
CRM, Netscape,  web server, etc on just 16M of ram.  Trick seems to be
having
lots and lots of swap space!

Craig W
-- 
 ______________________________________________        ||         ||
|Craig Wasson, CCIE #1078  cwasson@cisco.com   |       ||         ||
|Systems Engineer, N6IO    Federal Region, Civ |      ||||       ||||
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