Message-ID: <3740A242.E408AD0B@unb.ca> Date: Mon, 17 May 1999 19:12:02 -0400 From: Endlisnis X-Mailer: Mozilla 4.51 [en] (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: Hans-Bernhard Broeker CC: djgpp AT delorie DOT com Subject: Re: code for changing monitor refresh rate References: <199905171023 DOT MAA02459 AT acp3bf DOT physik DOT rwth-aachen DOT de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Info: BrunNet, Inc. 888-278-6638 Reply-To: djgpp AT delorie DOT com Hans-Bernhard Broeker wrote: > > I've been looking for this for a while as well. I haven't found > > anything. If anyone knows how to set attributes of "Plug and Play" monitors, > > that would probably do the trick. > > 1) It's almost certainly impossible to gain any influence on the data > a monitor and a graphics card exchange on their connection from the > *monitor* side: it has no other connection but throught the graphics cards, > so how would you talk to it? > > 2) There cannot possibly be a general method to do this. The basic > thing is that the graphic card hardware has to be set up differently, > and this means if the card vendor doesn't support you, you're most > likely stuck. At the very least, you'ld have to write your own 100% > hardware-specific, and *very* low-level kind of code, here. Think in > terms of timing-critical, probably 100% undocumented port writes, or > worse. There is a "Plug and Play" standard for monitor refresh. That's how Win9x can adjust the refresh rate without a driver from the monitor manufacturer. The graphics card also needs to support Plug & Play monitors for it to work. There is a standard method for determining (through the graphics card) what refresh rates are available and setting them. Why else would there be "Plug & Play" monitors? -- (\/) Endlisnis (\/) s257m AT unb DOT ca Endlisnis AT HotMail DOT com ICQ: 32959047