buffer write error (status 0x90)

Jon Ringle jon at ringle.org
Mon Aug 9 23:46:46 EDT 2010

On Mon, Aug 9, 2010 at 5:21 PM, Adam Yergovich <ayergo at jkmicro.com> wrote:
> Jon Ringle wrote:
>> We are replacing the discontinued Intel StrataFlash P30 flash
>> JS28F256P30T95 with the Numonyx P30-65nm flash JS28F256P30TF on our
>> boards and have a few boards with sample chips. During some testing
>> one of the boards with the Numonyx flash chip is now reporting the
>> following buffer write error (status 0x90) on every boot:
> I have tested swapping the lower density part and haven't had any problems
> with MTD or otherwise.  I suspect you've just got a bad part or something
> else happened.

Maybe, but we have seen other incompatibilities that occurred on all
of our samples. We use Redboot as the bootloader and we found that a
Redboot image in ROM mode will hang when trying to unlock and erase a
sector. I resolved that problem by building a ROMRAM Redboot image.

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