[time-nuts] World's most accurate PC clock!

W. D. WD at US-Webmasters.com
Sun Jul 3 00:38:39 EDT 2005


At 15:11 7/2/2005, Poul-Henning Kamp, wrote:
>In message <a05210600beec95afd329@[192.168.0.8]>, David Forbes writes:
>
>>It could easily be multiplied by 4 to make the canonical 14.318 MHz 
>>PC clock, so your DOS machine could be made to work at high stability 
>>and reasonable accuracy.
>
>I've done that for years.
>
>Most PC's will run from approx 13.8 to 15 MHz.
>
>Usually I use a PLL chip (ICS525).
>
>Works great.
>
>And btw, the 14.318MHz frequency is 4 x the color carrier in NTSC
>because that's what IBM used to make the ghastly colors on the
>orginal CGA adapter.

Is there a 'HowTo' for this somewhere?  How many pins are 
connected and to where?  Where do you mount the chip?  Any
batteries involved?




Start Here to Find It Fast!™ -> http://www.US-Webmasters.com/best-start-page/
$8.77 Domain Names -> http://domains.us-webmasters.com/





More information about the time-nuts mailing list