On Wed, 06 Nov 2002 09:53:36 +0100 (CET), [EMAIL PROTECTED] (Richard Menedetter) wrote:
> Hi Bastiaan! > 06 Nov 2002, "Bastiaan Edelman, PA3FFZ" <[EMAIL PROTECTED]> wrote: > BF> Whatever mode I choose the page always comes back with 'VGA 640x480 > BF> 256KB 16 colors. > BF> Maybe their is some trouble with the machine although Windoze gives me > BF> 256 colors... I would like HiColor 640x480 (800x600) > BF> Indeed I detected a Trident videocard with TVGA8900C chip inside the > BF> machine. > How much RAM ? > you can simply calculate the requirements: > 640x480 hicolor (16 bits) = 640 * 480 * 2 (2 bytes ==16 bits) /1024 = 600 KB > 1024*768*2/1024=937.5 > So you need a card with at least 1 MB of ram for both resolutions. > If you have only 512 KB than you could use 500 * 600 * 1 /1024=469 KB (256 > colors) > PS: You could also try to use the generic VESA driver. > PPS: Glenn: cdrom is _no_ valid dos device driver in command.com. > These are comX, lptX, nul, lpt, con Quite correct. But..... This line in config.sys makes command.com "think" that it is. DEVICEHIGH=C:\CDROM\LTNIDE.SYS /D:CDROM /DMA And this line makes it think that NWCD0001 is a device. DEVICEHIGH=C:\CDROM\LTNIDE.SYS /D:NWCD0001 /DMA The first prevents us from using any file named CDROM.whatever_extension And the second situation prevents the use of NWCD0001.whatever_extension Just as PRN.xxx, COM1.xxx, COM2.,xxx etc etc... cannot be used as filenames. Here are 3 photos to show what I mean. cdromdvc.jpg and nwcd-dvc.jpg on this page. http://www.angelfire.com/id/glenndoom/images.htm Unfortunatly, this a DOS limitation. Any name that we assign to a loaded device driver has now become an "invalid filename". -- Glenn http://arachne.cz/ http://www.delorie.com/listserv/mime/ http://www.angelfire.com/id/glenndoom/download.htm http://www.thispagecannotbedisplayed.com/
