sun4 memory board in sun3 ?

[Allan Doyle]

In article <1750 at brazos.Rice.edu> beaver.cs.washington.edu!wuarchive!uwm!aplcen!ginosko!cg-atla!weber at cs.utexas.edu writes:
>X-Sun-Spots-Digest: Volume 8, Issue 140, message 6 of 13
>
>The board for a 3/200 series machine is not compatible with a 3/100 based
>machine.  No jumpers or other variables will make it so.  As far as I know
>your 3/200 memory board will only work in 3/200's and will not work in
>3/400 or 4/300 either.

I have just tried the combinations below:

	3/480, 3/4xx memory		Works (of course)
	3/280, 3/2xx memory		Works (of course)

	3/480, 3/2xx memory		Works
	3/280, 3/4xx memory		Works

	3/480, Clearpoint 16M for 3/280	Works, but only if it is
					not the first board in the
					system. If 1st, it fails the
					forced ECC interrupt test.

Allan Doyle                                              adoyle at bbn.com
BBN Systems and Technologies Corporation		 (617) 873-3398
70 Fawcett Street,   Cambridge, MA 02138