Subject: Re: IIcx hardware question
To: SamMaEl <rimsky@teleport.com>
From: E. Seth Miller <esmiller@engin.umich.edu>
List: port-mac68k
Date: 12/19/1997 17:39:07
Well, the IIcx has a "dirty" ROM, and won't support over 8MB without
Mode32. (Actually, Apple's original specsheet gives 8MB as the memory
limit for a IIcx.) If you're in 32-bit mode, it will recognize all of the
memory, otherwise, it will only recognize 8MB. I don't think that this is
related to Mark's problem.
-Seth Miller
On Fri, 19 Dec 1997, SamMaEl wrote:
> > On Tue, 16 Dec 1997, Mark Andres wrote:
> >
> > > Hi,
> > >
> > > This is not 100% NetBSD-related, but here goes. I have a IIcx currently
> > > running NetBSD 1.3-ALPHA 99.99% of the time. The IIcx has 8 SIMM slots and
> > > currently I have the following: Bay A = 4 x 4MB SIMMS; Bay B = 4 x 1MB
> > > SIMMS. This gives me a total of 20MB and this shows up fine under both
> > > MacOS and NetBSD.
> > >
> > > If I take the 1MB SIMMs out of Bay B and add 4 4MB SIMMs, I think I should
> > > get 32MB total RAM. But when I start up, I only have 20MB of RAM showing
> > > up under MacOS in "About This Macintosh ...". NetBSD also only recognizes
> > > 20MB. I KNOW these are really 4 MB SIMMs. Does anyone know if there is
> > > some hardware limitation on the SIMMs that go in Bay B of a IIcx that
> > > limits each slot from recognizing more than 1 MB?
> > >
> > > Since I have the spare SIMMs, it would be nice to have my IIcx runninhg
> > > with 32MB of RAM instead of 20MB. Any help or advice greatly appreciated.
> > >
>
> Actually, I noticed a similar problem with my IIcx. I bought it
> used about 3 or 4 weeks ago from a local guy, and it came with 8MB of
> RAM... 8 1MB SIMMs. Well, I swapped 4 of the 4MB SIMMs out of an old IIsi
> I have that is sitting out in my garage, and swapped the 4's into the IIcx
> and put its other 4 1's into the IIsi. I booted into MacOS and only 8 MB
> showed up in the About This Macintosh window. Now, these SIMMs have worked
> just fine for years in the IIsi and are working just fine now in the IIcx
> after that initial weird boot. Might it just be some weird little nuance
> in the SIMM slots? I noticed that they are different from the IIci and
> IIsi ones.... at least mine are. Might it be a vendor defect, etc? Or,
> maybe they were just loose for the first boot... They are working just
> fine now, though.
>
> Ryan
>
> -----
> HELO... my name is rewt... you have SIGKILLed my father... prepare to vi!
>
>