[time-nuts] PC clock generator without 14.318MHz

[Poul-Henning Kamp]

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In message <ep0d0ctbrovmisvj43j57ns6smt606t3fs at 4ax.com>, Gary Woods writes:
>On Tue, 18 Oct 2016 16:53:15 +0200, you wrote:
>
>>14.317 MHz quartz.  Such frequency is a relic of original PC design
>
>It's 4X the color subcarrier frequency in NTSC (originally U.S.)
>television; rapidly becoming a dinosaur. I'm sure it was used in computers
>to make color video easier. Newer boards doubtless use much faster clocks
>and synthesize what the parts need.

It's 14.3181818 MHz and it has a most facinating history - if you care
for that sort of thing:

	https://en.wikipedia.org/wiki/Colorburst#Rationale_for_NTSC_Color_burst_frequency


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