Path: chuka.playstation.co.uk!sixgun.demon.co.uk!sixgun.demon.co.uk From: antony@sixgun.demon.co.uk (Antony Scott) Newsgroups: scee.yaroze.problems.pc Subject: Re: Hauppauge WinTV card Date: Sat, 13 Feb 1999 09:44:26 GMT Organization: None Lines: 32 Message-ID: <36c54842.8514038@192.168.0.1> References: <79lak3$1do1@chuka.playstation.co.uk> <36bf2981.1108126@192.168.0.1> <79t6hs$o0v2@chuka.playstation.co.uk> Reply-To: antony@sixgun.demon.co.uk NNTP-Posting-Host: sixgun.demon.co.uk Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Newsreader: Forte Agent 1.5/32.451 X-No-Archive: yes On Wed, 10 Feb 1999 23:59:59 -0000, "Rad" wrote: >Hi Antony, > >What does overlay do? I don't know the exact details, but overlay basically means that the videocard can "reserve" an area of video memory for something else to write to directly. If you aren't using overlay then the CPU has to get involved with moving stuff into the video memory. With overlay, no CPU intervention is required, so it's alot smoother. >I very much doubt my card supports it. It's a fairly old video card with >about 1MB memory. Some of the text in windows also gets corrupt when WinTV >is running but I put this down to the low video memory. Are you using a PCI video card and WinTV card? What happens when you have this setup is, the WinTV card can write directly to the video card memory via the PCI bus with no cpu intervention. >Still, I'll have to make do, until I upgrade soon. I just wanted to make >sure that it was due to my poor machine rather than the TV card. I wouldn't have thought it's the WinTV card, but it is a possibility until you can rule out the quality of your PC as a factor. If you've still got the box for your WinTV card, it should mention on there a list of video cards that it supports - these (AFAIK) are cards with overlay support. By, now you should be suitably confused!