In message <[EMAIL PROTECTED]>, 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. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
