From owner-freebsd-hackers@freebsd.org  Thu Sep 17 23:05:51 2015
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From: Bob Bishop <rb@gid.co.uk>
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Date: Fri, 18 Sep 2015 00:05:35 +0100
Cc: Konstantin Belousov <kostikbel@gmail.com>,
 Hackers freeBSD <freebsd-hackers@freebsd.org>,
 Dieter BSD <dieterbsd@gmail.com>, Andriy Gapon <avg@freebsd.org>,
 freebsd-hardware@freebsd.org
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To: Igor Mozolevsky <igor@hybrid-lab.co.uk>
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Hi,

> On 16 Sep 2015, at 13:04, Bob Bishop <rb@gid.co.uk> wrote:
>=20
>=20
>> On 16 Sep 2015, at 12:52, Igor Mozolevsky <igor@hybrid-lab.co.uk> =
wrote:
>>=20
>> [=E2=80=A6]The only thing I could think of is that the fab process =
was(/is?) large
>> enough to not worry about "nonsense" like cosmic rays &c (but then =
I've not
>> had much exposure to semi-conductor electronics theory since late =
90s).
>> [=E2=80=A6]
>=20
> Dunno. I=E2=80=99ll ask my tame semiconductor expert when I see him =
tomorrow=E2=80=A6

The answer is quite interesting. A few process shrinks ago, alpha =
particle effects were becoming worryingly intrusive and everybody was =
concerned how much smaller features on ICs could actually be pushed.

Then they did the next process shrink, and the effects disappeared =
completely! A couple more shrinks later and they still haven=E2=80=99t =
reappeared. Nobody understands why, but they don=E2=80=99t worry about =
it any more.

>> --=20
>> Igor M.
>> _______________________________________________
>> freebsd-hardware@freebsd.org mailing list
>> https://lists.freebsd.org/mailman/listinfo/freebsd-hardware
>> To unsubscribe, send any mail to =
"freebsd-hardware-unsubscribe@freebsd.org"
>=20
> --
> Bob Bishop
> rb@gid.co.uk
>=20
>=20
>=20
>=20