Date: Thu, 21 Oct 2010 08:27:05 -0500 From: Alex Stangl <alex@stangl.us> To: freebsd-questions@freebsd.org Subject: Re: Greybeards (Re: Netbooks & BSD) Message-ID: <20101021132705.GA93895@scout.stangl.us> In-Reply-To: <20101021133844.235fdc72@gumby.homeunix.com> References: <20101019074615.GA2183@current.Sisis.de> <alpine.BSF.2.00.1010191448390.6689@wonkity.com> <20101020022946.GA23035@thought.org> <20101020052601.GA1977@current.Sisis.de> <4cbe9e9a.3qT7q8JUqJxSD8/V%perryh@pluto.rain.com> <20101020165526.GA25310@thought.org> <4CBF21EB.1080003@tundraware.com> <20101020194605.GA78565@stainmore> <4CBF4CB4.6070902@qeng-ho.org> <20101021133844.235fdc72@gumby.homeunix.com>
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On Thu, Oct 21, 2010 at 01:38:44PM +0100, RW wrote: > On Wed, 20 Oct 2010 21:10:28 +0100 > Arthur Chance <freebsd@qeng-ho.org> wrote: > > 50s) had the experience of programming microcode on a machine by > > inserting brass slugs for 0s and ferrite slugs for 1s on a pin board. > > I wonder why it was brass/ferrite rather than brass/empty or > ferrite/empty. I was wondering the same thing. I suspect one of them may be equivalent to empty electrically, however this way is less errorprone, explicitly populating each slot, rather than relying upon empty, which could in fact be a mistaken omission. Alex
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