From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pantelis Antoniou <panto@intracom.gr>
Date: Tue, 27 Apr 2004 15:44:55 +0300
Subject: [U-Boot-Users] [RFC] NAND Flash
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Woodruff, Richard wrote:

>>I hope you don't solder your chips on the board, cause bad blocks can
>>
>be
>
>>present in pristine chips fresh from the factory.
>>This will NOT work, since a bad block anywhere in the range that you
>>
>use
>
>>means that you must replace the chip.
>>
>>
>
>Bad blocks can in practice be a bit harder to get then one might think.
>In say ... 500 different samples which passed my desk in the last three
>years none of them actually had bad blocks.  They could have of coarse.
>We simulated bad blocks.  It is a real problem.
>
I thought it was rare too until I got one chip with a bad block just the 
other
day.

It seems to vary with the lot.

>
>Regards,
>
>Richard W.
>
>
>
>
Regards

Pantelis