🚀 go-pugleaf

In <50uurb$ics@news1.randomc.com> llama@randomc.com (Jonny Llama) writes:

>When booting my 4/110 through diagnostics I get:

>[snip]
><Probing for Main Memory>
><Found 0x00000010 MB of Main Memory>
>Limited Memory Test: End of Megabyte 0x00000010. Write-Write-Read Test.
>error: address=0x000ffffc, expected=0xa568d3a5, observed=0x0280000c.(looping)
>Physical address:  0x00fffffc.  SIMM in Error:   U1603  U1602  U1601  U1600 

>the machine has no memory installed (how do I go about doing this?) and 
>I'm seeing this through a null modem off serial port A.  Followups to me 
>unless it's useful information to the group.

4/110's are strange when it comes to memory. The ammount of RAM, and
consequently the type and location of SIMM's, is jumper configured, and
the ROM's don't actually sense that RAM is there. Your board is telling
you that it's set up for the 16 meg configuration, which is 16 x 1 meg
SIMM's. There are three other valid configurations using 256 k and/or 1
meg SIMM's.

The Sun Hardware FAQ has all the info about fitting RAM to 4/110 boards, 
including jumper settings and bank locations. You can FTP it from 
ftp.picarefy.com in '/pub/Sun-Hardware-Ref'.

Regards,

Craig.
-- 
        Craig Dewick - craig@zeta.org.au - http://www.zeta.org.au/~craig  
            Professional Train Driver. Located in Sydney, Australia.
          Sun Ripened Kernels - http://www.zeta.org.au/~craig/srk.html
                Surplus and pre-loved Sun Microsystems equipment.