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From: terry@cs.weber.edu (A Wizard of Earth C)
Subject: Re: RFD on RTC (Real Time Clock) MC146818
Message-ID: <1993May1.063724.11341@fcom.cc.utah.edu>
Keywords: RTC Real time clock
Sender: news@fcom.cc.utah.edu
Organization: Weber State University (Ogden, UT)
References: <jmonroyC6A8t3.572@netcom.com>
Date: Sat, 1 May 93 06:37:24 GMT
Lines: 28
In article <jmonroyC6A8t3.572@netcom.com> jmonroy@netcom.com (Jesus Monroy Jr) writes:
>
> Call For Development on RTC (Real Time Clock)
Concise, technical, to the point. Thank You!
> I need a precision 1Khz alarm clock for the QIC-40/80.
> A "dead loop" will not work with current hardware limitations.
> A hardware clock is needed.
Does the event have to occur *after* the post time, or does it have to
occur *at* the post time? If it's *at*, you need an NMI clock, not an
alarm clock; if it's *after*, an alarm clock will do. The distinction is
whether the real time clock interrupt will require a reordering of the
interrupt priorities and a [possible] change to the scheduler.
Terry Lambert
terry@icarus.weber.edu
terry_lambert@novell.com
---
Any opinions in this posting are my own and not those of my present
or previous employers.
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