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From: tr@wind.bellcore.com (tom reingold)
Newsgroups: comp.sources.wanted,comp.lang.c,comp.sys.ibm.pc
Subject: Re: C / IBM REQUIREMENTS......
Message-ID: <2195@bellcore.bellcore.com>
Date: Wed, 26-Aug-87 17:00:27 EDT
Article-I.D.: bellcore.2195
Posted: Wed Aug 26 17:00:27 1987
Date-Received: Fri, 28-Aug-87 06:36:14 EDT
References: <6050@ut-ngp.UUCP>
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Reply-To: tr@wind.UUCP (tom reingold)
Organization: BellCoRe (Bell Communications Research)
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In article <6050@ut-ngp.UUCP> marshek@ut-ngp.UUCP (The Genie) writes:
$ 
$ Anybody out there have any stuff to do a peek & poke function in C ?
$ (The peek & poke of BASIC).
$ Further, do you have any idea where I can get a C code to do
$ simple calculator functions (+,-,*,/,log) and the trigonometric
$ functions on an IBM PC.....
$ Thanx in advance.

1) Here is a sample function that uses a "poke" to the time of day
counter in the PC.  It is not guaranteed by Microsoft, as they
recommend that we use DOS calls instead.  I gather that the DOS
corresponding to this accesses this memory address but that address
may change one day.

Enjoy.

------------------------------------------------------------
#define TICKADDR 0x46C
long gettick(void)
{
	long far* tick=MK_FP(0, TICKADDR);	/* absolute pointer to tick
						 * counter (18.2/sec) */
	return(*tick);
}
------------------------------------------------------------

2) I don't have any calculator source code.


Tom Reingold
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