On Thu, 20 Aug 2009 22:34:02 +0200, Klaus H. wrote:
> Hi,
>
> has anyone got an idea why a 501-5445 (US-II 400Mhz) would not work in
> an Ultra2 (board revision -14 and latest OBP/POST 3.25/3.3.8)?
>
> With diag-switch? set to "true" I only get the single stray character
> when switching power on and nothing more...
>
> The same module works (as in "completes diagnostic POST without error")
> in an E250 and the Ultra2 completes POST with a 250 Mhz US-II.
>
> ciao
> Klaus
There's a jumper that has to be changed.
J2301 is just in back of the two CPUs (looking from the front of the
machine, and at the very left.
Pins 1+2 clock for 250 or 300MHz modules, pins 2+3 for US-I or 400MHz US-
II.
from the Ultra2 UltraSPARC-II Module Upgrade, 805-0936-14
Steven Brown <z@example.com> wrote:
> There's a jumper that has to be changed.
Ah, ok. Should have thought about something like that. I will try
setting that jumper.
> J2301 is just in back of the two CPUs (looking from the front of the
> machine, and at the very left.
>
> Pins 1+2 clock for 250 or 300MHz modules, pins 2+3 for US-I or 400MHz US-
> II.
This also explains why the 501-5445 worked in another Ultra2, originally
equipped with a US-I, 167 Mhz.
While the notes in the system handbook say
The Ultra 2 requires System Board >=501-3132-13
the board of that Ultra2 is a "dash11" (_not_ "-11").
> Steven Brown <z@example.com> wrote:
>> J2301 is just in back of the two CPUs (looking from the front of the
>> machine, and at the very left.
>>
>> Pins 1+2 clock for 250 or 300MHz modules, pins 2+3 for US-I or 400MHz US-
>> II.
Setting jumper J2301 worked perfectly. Thanks to Steven and all others
who wrote privately with this advice.
400Mhz US-II 501-5445 in Ultra2 does not work 
Linear Mode
