Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!uakari.primate.wisc.edu!ginosko!uunet!philmtl!ray From: ray@philmtl.philips.ca (Raymond Dunn) Newsgroups: comp.sys.ibm.pc Subject: Re: set system clock? Message-ID: <727@philmtl.philips.ca> Date: 26 Sep 89 19:47:30 GMT References: <19500034@uxh.cso.uiuc.edu> <2518F946.23692@maccs.dcss.mcmaster.ca> Reply-To: ray@philmtl.philips.ca (Raymond Dunn) Organization: Philips Electronics Ltd. - St. Laurent P.Q., Canada Lines: 32 In article <2518F946.23692@maccs.dcss.mcmaster.ca> cs4g6ag@maccs.dcss.mcmaster.ca (Stephen M. Dunn) writes: > But seriously, the DATE and TIME commands only affect DOS's clock, and >not the hardware clock available on ATs and higher (and as an add-in for >lower-end PCs). At boot time, DOS sets its clock from the hardware clock; >from then on, however, DOS behaves as if the hardware clock didn't exist. Just a little correction here. MS DOS behaves in the same way in this area on both AT's and PC's. What determines its behaviour is the functions implemented in the BIOS. If BIOS interrupt 1A functions 2 and 4 are implemented, DOS sets its internal time and date automatically at boot time. From MS DOS 3.3 and up, the DATE and TIME commands *do* update the hardware clock on the machine, so long as the BIOS implements interrupt 1A functions 3 & 5. > (I must say I like BIOSes like Award and AMI which have the setup program >built-in, so you don't need to search through your 50 or 100 floppies for the >one with the setup program on it) Hmm. Floppies? Ah yes, those things you use to install software onto your hard disk, I remember. (:-) -- Ray Dunn. | UUCP: ray@philmt.philips.ca Philips Electronics Ltd. | ..!{uunet|philapd|philabs}!philmtl!ray 600 Dr Frederik Philips Blvd | TEL : (514) 744-8200 Ext : 2347 (Phonemail) St Laurent. Quebec. H4M 2S9 | FAX : (514) 744-6455 TLX : 05-824090