Max. memory on 164LX

[Kazuyoshi Furutaka]

Hi all,

From: furutaka at jb3.so-net.ne.jp
Subject: Re: Max. memory on 164LX
Date: Mon, 5 May 2008 23:24:58 +0900 (JST)

> > > From: <furutaka at jb3.so-net.ne.jp>
> > > Date: Mon May 05 2008 - 04:41:25 AKDT
> > [...]
> > > 
> > > How about 128MB DIMMs?
> > 
> > I have not tested these, but my educated guess is that the problem with 
> > some 256MB modules is that they are built from 9 x 256Mbit chips and the 
> > memory controller on the 164LX only understands individual RAM chips up 
> > to 128Mbit.
> > 
> > The Kingston PC100-256MB module is built from 18 x 128Mbit chips and 
> > works, wheras the newer PC133-256MB module is built from 9 x 256 Mbit 
> > chips and is not recognized at all.
> > 
> > If my guess is correct, then 128MB DIMMS with either 9 x 128Mbit chips 
> > or 18 x 64Mbit chips should work. In any case, the memory must be 72 
> > bits wide and *not* registered, as many people have pointed out in 
> > previous posts.
> > 
> > Please tell us, if you get some exprimental results.
> 
> Well, I've installed four 128MB DIMMs on a 164LX machine and it was running
> (not for a long period) without any troubles; the memory modules are said to be 
> "PC100MHz Registered ECC 168Pin SDRAM" by the seller.
> Now I'm away from home.  After coming back to my home I'll take a look at them.

They are four of  Micron MT18LSDT1672G-10EC2:
according to http://www.memoryten.com/001552.htm,
it's REGISTERED ECC (PC100, CL2) as I was told.

Yours,
Kazuyoshi
--
Kazuyoshi Furutaka
furutaka at jb3.so-net.ne.jp