X-Spam-Filter: check_local AT panther DOT unisys DOT com DOT br by digitalanswers.org Message-ID: <00af01c259e8$19b0d820$0200a8c0@alainnb> From: "Alain" To: References: <01FD6EC775C6D4119CDF0090273F74A4FD687E AT emwatent02 DOT meters DOT com DOT au> Subject: Re: Re: a better screen display for DOS? Date: Wed, 11 Sep 2002 19:42:56 -0300 MIME-Version: 1.0 Content-Type: text/plain; charset="koi8-r" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Reply-To: opendos AT delorie DOT com This message was written some time ago, but due to the new subscribing policies (that I agree with!) I was not able to send... Hi Michael, Maybe I can give you an explanation, as I have already developped both ctr monitors and video boards. Your display is didigned for something like 1024 lines when operating at it's _nominal_ resolution. To make this work and have a good readability the dot on the screen needs to have a fisical diamiter slightly over 1/1000 of the screen size or the image would get blured. When you use text mode, the scanning is streched so that the standard 640 lines are displayed across the whole screen. There is a mismatch between the dot diameter and the line spacing which produces a dark interval between the displayed lines. I don't know any simple cure for this. The theoretical solution is to make the screen double the number of lines and repeat the same info in the intermediate lines. I never heard of anything like it :( Alain From: "Michael Snowden" > I am having a serious problem in getting a good crisp display using > DOS. The figures look like the ones we had in the mid-80s, i.e., each > character is composed of numerous little horizontal parallel lines. > I suspect the video card is the source of the problem, not the > monitor, because the display is alright when used with the Linux hard > disk. The video card is a 32 Mb AGP TNT-2 M64. > > Which video card should I try to get a sharp text display for DOS and > yet will still work with Linux? > > Michael Snowden > mss14 AT cantua DOT canterbury DOT ac DOT nz