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Article #3106Windows XP: reading and writing to CMOS RAM
From: Simon Elliott
Date: Thu, 05 Oct 2006 19:46
Date: Thu, 05 Oct 2006 19:46
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1375 bytes
Hi I want to read and write to the CMOS RAM where the BIOS parameters are held. Should I use a port I/O driver and access port 0x70 and 0x71 or is there a better way? (I'm aware Windows XP maintains a memory map of this area but as far as I know this is only a shadow of the CMOS RAM and changing it doesn't actually write bytes to the CMOS RAM.) Can anyone point to any info on this, and on recalculating the CMOS checksum once I've written some bytes to the CMOS? TIA! -- Simon Elliott http://www.ctsn.co.uk
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X-Google-Thread: 10cc67,64fe7a8041ce38b5,start X-Google-Attributes: gid10cc67,public X-Google-Language: ENGLISH,ASCII-7-bit From: "Simon Elliott" <Simon at ctsn.co.uk> Subject: Windows XP: reading and writing to CMOS RAM Newsgroups: borland.public.cppbuilder.nativeapi Reply-To: "Simon Elliott" <News at ctsn.co.uk> User-Agent: XanaNews/1.17.4.1 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 NNTP-Posting-Host: 82.152.41.49 Message-ID: <4525612a$1@newsgroups.borland.com> Date: 5 Oct 2006 12:46:50 -0700 X-Trace: newsgroups.borland.com 1160077610 82.152.41.49 (5 Oct 2006 12:46:50 -0700) Lines: 15 Path: arc1-ca.pugleaf.net!g2news2.google.com!news3.google.com!news4.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mail