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RE: ec555 memory map, bootcode


Because I'm implementing eCos in a product that already has its own bootcode.
And _all_ interrupt processing is already taken care off.
By the way I got eCos running now. I modified the memory map and memory
controller setup. And modified a couple of register values and now its working
:-)

But now I look at the system clock which is running on 10ms (100 Hz), but I want
to have a clock that runs on 1ms (1000 Hz) Can this be done (on the mpc555)
_without_ disrupting the system clock. I already read on the discussion list
that a couple of parts of eCos depend on the 10ms clock.

Thanks in advance.

-----Original Message-----
From: bob.koninckx@o-3s.com [mailto:bob.koninckx@o-3s.com]
Sent: donderdag 25 november 2004 12:02
To: Meulendijks, J.
Cc: 'bob.koninckx@o-3s.com'; 'Andrew Lunn';
'ecos-discuss@sources.redhat.com'
Subject: RE: [ECOS] ec555 memory map, bootcode


I am pretty sure that what you want to do will involve a _lot_
of rework and testing. Since you wont be using redboot, your
app will have to take care  of _all_ interrupt processing.
(that's why Gary suggested to use the option to copy vectors).
But then you need write access to memory at 0x100, 0x200 etc
... Unfortunately, I mapped the internal flash there. First
thing to do would be modifications to the memory map and
memory controller setup.

Just curious, why don't you use redboot?

Bob

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