Date: Tue, 01 Aug 2000 14:41:04 -0600 From: Warner Losh <imp@village.org> To: Poul-Henning Kamp <phk@FreeBSD.ORG> Cc: hackers@FreeBSD.ORG Subject: Re: How to make *real* random bits. Message-ID: <200008012041.OAA85828@harmony.village.org> In-Reply-To: Your message of "Mon, 31 Jul 2000 22:01:01 %2B0200." <5924.965073661@critter.freebsd.dk> References: <5924.965073661@critter.freebsd.dk>
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In message <5924.965073661@critter.freebsd.dk> Poul-Henning Kamp writes:
: The earphone output of the geiger counter with a 1kOhm load generates
: a nice TTL level pulse which can be fed onto pin 10 of the parallel
: port and timestamped with the PPS-API device ("device pps").
How does the variable, but somewhat predictable, latency of the
parallel port interface interrupt?
Warner
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