Daniel Weiss wrote:
> Hi list members
>
> I have a 5282 design with the program in external
flash.
>
> Problem is I have to power the circuit twice in
sequence in order that the
> CPU boots properly. Just one time powerup makes it
stuck somehow.
>
> Once it runs and I do a hardware reset, it does not
boot again immediately,
> I have to wait about 20..30 seconds until it starts
booting. During that
> period it just seems to do nothing. No external memory
accesses. If I press
> the reset key once more within that 20..30 second
period, it starts booting
> immediately. Drives me crazy. Has anybody an idea what
that could be?
>
We once had a similar problem because we had a device on the
data bus that was coming out of reset too slow. This device
was corrupting the initial program counter and stack pointer
during
the reset.
Perhaps you can confirm those first transfers are working
correctly.
Regards
Paul
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