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From: Freddy Lugo <wilflugo@yahoo.com>
To: linuxppc-embedded@lists.linuxppc.org
Subject: Can not access memory after turning MMU on
Date: Mon, 7 May 2001 13:41:00 -0700 (PDT)	[thread overview]
Message-ID: <20010507204100.56613.qmail@web9901.mail.yahoo.com> (raw)


Hi,

After turning the MMU (turn_on_mmu) the next memory
access instruction (stwu) can not be translated, the
memory can not be accessed and the system halt.  I
check the list archives and there are references to
set the Debug Enable Register (DER) to an
"appropriate" value.  I am working with the MPC750 and
in the Users Manual I can't find any reference to such
register.  Also I checked my bdi2000 (in case it was a
register on the bdi) and I didn't found anything.

This register exists or has its counterpart on the
MPC750?  Besides the DER value, there are other
methods to work and find the problem?

Thanks,

Freddy Lugo

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

             reply	other threads:[~2001-05-07 20:41 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-05-07 20:41 Freddy Lugo [this message]
2001-05-07 20:56 ` Can not access memory after turning MMU on Paul White
2001-05-07 22:00 ` Dan Malek

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