Are the copies the same speed grade as the master?

On 2010-08-04, at 1:45 AM, Roger Weichert wrote:

> I'm just having a heart attack!!!   I just erased 10 x 27C256 eproms, bur=
nt=20
> an updated software version on them and now they appear dead when I plug=
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> them in.
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> They all verified the same as the master (and still do) and the checksums=
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> are all the same. The master eprom works in the circuit, but none of the=
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> copies.I've also pulled out some new ones and programmed them with same=20
> result.
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> I'm hoping I'm missing something obvious, but it doesn;t make sense.
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> I'd already spent all afternoon trying to reload the library on the Datam=
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> S4 that I use, and it finally worked. After that everything else seemed o=
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> ... until now.
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> Help!!!=20
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> --=20
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