Kim J?rgensen wrote:
> I got a custom MPC823E board, and I want to use a LCD display with Linux.
Get the logic analyzer on the bus.......
> Can anyone tell me what is wrong, and how to solve this?
I can make a few guesses. This has nothing to do with Math Emulation,
and everything to do with fetching the proper instructions into the
core. The LCD controller is a heavy-duty DMA controller that has
priority over everything to ensure it can keep the display updated
from system memory. Since the controller performs large burst mode
operations, this is a classic example of memory controller or memory
interface problems. I suspect the memory timing isn't correct and the
instructions are just bad memory cycles that can't be properly
decoded.
-- Dan
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
