On Mon, 2005-11-28 at 21:17 -0600, Tim & Alethea Larson wrote:
> William Duke wrote:
> > On Mon, 2005-11-28 at 15:11 +0000, Bruce O'Neel wrote:
> > I'm in the middle of an Afterstep build on my LC575 right now.  It's a
> > nice little machine -- zippy.  I'm thinking that if I don't get my 950
> > up and running soon, I might swap the full 040 from the 950 into the
> > 575.
> 
> I've got an '040 from a Q840 I want to stick in a CC I'm getting...as 
> soon as I find a 575 mobo to transplant.  :)

I don't know what it is about the LC 575, but Apple did something really
good when they designed that machine.  It is, by far, one of the
zippiest 040 class Macintosh computers that I have ever used.  

> > Oh, by the way, does anybody know of any RAM anomalies with the LC575?
> > My LC575 absolutely refuses to accept any SIMM that is larger than 8MB.
> > I have no idea why; this machine is supposed to be capable of supporting
> > up to 32MB SIMMs.  Anything over an 8MB SIMM produces the dreaded chimes
> > of death at startup.  Strange!  Very strange!
> 
> Make sure they're fast enough.  Probably 70ns or faster?
> 

Yeah, that's one of the things that I always check.  Apple says that the SIMMs for the 575 should be 80nanoseconds or faster.  So the SIMMs I'm using should work fine in the 575; they're 70 and 60ns chips.  The mind boggles -- I've tried these same SIMMs in an LCIII and a Performa 5200, and they work just fine.  I have no idea why the 575 does disco (chimes of death) with SIMMs bigger than 8MB.  There must be a fault on my 575 logic board or something.