(all from memory...maybe I'm wrong)

Yes, 4M simms are okay. The order in which the banks on an SS1/SS1+/IPC
go are different from SS2 and later. On an SS1:

		3	2
		4	1
		(front)

so put 4 4M simms in bank 1, 4 1M sims in bank 2, etc..

On the SS2 the first slot of each bank (all for banks) is supposed
to be populated with the same simm type.

I've had my IPC be a little picky about 4M simms- but that may be
mostly because this machine was a lab test unit and is *really*
worn out...

-matt
 

On Thu, 9 Jul 1998, der Mouse wrote:

> I've got a SPARCstation 1+ at home.  Currently it's got 16 megs of RAM,
> in the form of 16 one-meg SIMMs.
> 
> Under what circumstances can such a machine take 4-meg SIMMs?  I seem
> to recall seeing it said that it could be done, but don't recall ever
> seeing the restrictions delineated.  I've seen a "SPARCstation 1+
> Installation Guide" (Sun PN 800-4784-10, rev A of 2 April 1990) that
> describes how to install 1M SIMMs, including which slots they can go
> into.  But of 4M SIMMs it says only
> 
> 	In addition to the standard 1 megabyte SIMMs, 4 megabyte SIMMs
> 	are also available.  You can upgrade your SPARCstation 1+ with
> 	4 megabyte SIMMs or combine 1 megabyte SIMMs with 4 megabyte
> 	SIMMs.  If you order 4 megabyte SIMMs from Sun Microsystems,
> 	Inc., follow the installation instructions that come packaged
> 	with your 4 megabyte SIMMs.
> 
> This seems to confirm that it's possible, but is singularly
> uninformative about details.  Anyone know, or have a pointer to a
> document that talks about it?
> 
> 					der Mouse
> 
> 			       mouse@rodents.montreal.qc.ca
> 		     7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3 27 4B
>