Article View: comp.os.msdos.programmer
Article #4016Re: Fixed clock speed on pc? CLK_TCK == 18.2 is TRUE??
From: Duncan Murdoch
Date: Fri, 21 Dec 1990 14:36
Date: Fri, 21 Dec 1990 14:36
12 lines
1114 bytes
1114 bytes
In article <82583.2771ee24@vaxc.cc.monash.edu.au> apm233m@vaxc.cc.monash.edu.au writes: > >I don't know why CLK_TCK is defined in time.h, but the nominal 18.2 "ticks" per >second should be the same on all machines running MS-DOS. As an aside: someone in the Fidonet Pascal who was writing programs to use at timing races commented on this. He found the tick rate is very stable on most machines, but varies from the IBM standard rate by as much as a few percent (I think) on some clones. If you need high accuracy, it's necessary to calibrate it against a reliable external clock. Duncan Murdoch
Technical Details
Message-ID:
<1990Dec21.143605.20997@maytag.waterloo.edu>Path:
arc1-ca.pugleaf.net!utzoo!attcan!utgpu!watserv1!maytag!watstat.waterloo.edu!dmurdochReferences:
<15779.2770e40e@levels.sait.edu.au> <82583.2771ee24@vaxc.cc.monash.edu.au>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!watserv1!maytag!watstat.waterloo.edu!dmurdoch From: dmurdoch@watstat.waterloo.edu (Duncan Murdoch) Newsgroups: comp.os.msdos.programmer Subject: Re: Fixed clock speed on pc? CLK_TCK == 18.2 is TRUE?? Message-ID: <1990Dec21.143605.20997@maytag.waterloo.edu> Date: 21 Dec 90 14:36:05 GMT References: <15779.2770e40e@levels.sait.edu.au> <82583.2771ee24@vaxc.cc.monash.edu.au> Sender: daemon@maytag.waterloo.edu (Admin) Organization: University of Waterloo Lines: 12