9 May
2002
9 May
'02
1:16 p.m.
----- Original Message -----
From: "Pete Turnbull" <pete(a)dunnington.u-net.com>
To: <classiccmp(a)classiccmp.org>
Sent: Thursday, May 09, 2002 06:03 PM
Subject: Re: IRIX on Personal Iris
Good idea. Yes, the ASICs are the same on all the SIMMs: LSILOGIC
L1A6569,
DDM1, Rev.C, SGI 9700832. The date codes and
manufacturer code/batch
number may vary from SIMM to SIMM, of course.
That's the same ASIC that I have on the SIMM in front of me, which I thought
was a 2MB one but...
If you upgrade a 2MB SIMM (514256 chips) with 514100 chips, remove the
75-ohm resistor at R6 (may be marked 75R or 750) and fit a new 2K2
resistor
at R5.
this one has a 75R at R9, R6 is open, R8 is open, and 222 at R5. Does that
make this an 8MB SIMM? The RAM chips are marked 4C4001JDJ-7. Huh. _Is_ it
an 8MB SIMM? Sucks that I only have one...
--
Pete Peter Turnbull
Bob