Date: Fri, 18 Sep 2015 00:05:35 +0100 From: Bob Bishop <rb@gid.co.uk> To: Igor Mozolevsky <igor@hybrid-lab.co.uk> 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 Subject: Re: ECC support Message-ID: <A694618D-FE07-4E56-A0E0-890E7C8BD4EE@gid.co.uk> In-Reply-To: <93106DFF-9741-4515-B6E0-AC43C0AF2179@gid.co.uk> References: <CAA3ZYrBXZn1WpHWYGJYWJDPsk7iDahCas8RhnHC4w%2Babf4w4hA@mail.gmail.com> <55F88A18.6090504@FreeBSD.org> <20150916035904.GE67105@kib.kiev.ua> <93871ADA-EDA3-481C-9959-1D371AB44479@gid.co.uk> <CADWvR2gBDjKFRW-X6ECJaGG7tSvOgk0rTk38O1qQ0hUWjRBF_A@mail.gmail.com> <3678FC1E-DDC5-4FB2-B6E9-6FC90D0C988E@gid.co.uk> <CADWvR2ha0-ifBYTswdVF7tzZsHayf%2BKXVdk86S0tuuPmLKj6cg@mail.gmail.com> <93106DFF-9741-4515-B6E0-AC43C0AF2179@gid.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
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