Path: utzoo!mnetor!uunet!husc6!bbn!mit-eddie!ll-xn!ames!oliveb!sun!pepper!cmcmanis From: cmcmanis%pepper@Sun.COM (Chuck McManis) Newsgroups: comp.sys.amiga.tech Subject: Re: Horizontal scrolling problems Message-ID: <52638@sun.uucp> Date: 10 May 88 15:22:32 GMT References: <2465@mit-amt.MEDIA.MIT.EDU> Sender: news@sun.uucp Reply-To: cmcmanis@sun.UUCP (Chuck McManis) Organization: Sun Microsystems, Mountain View Lines: 19 In article <2465@mit-amt.MEDIA.MIT.EDU> (Darren L. Leigh) writes: > I am trying to create a hi-res, interlaced horizontally scrolling > display ... When the bitmap I am using is 1024 or fewer pixels wide, > the display is fine ... When the bitmap is 1025 or more pixels wide, > I get junk ... Darren, you can't scroll a bitmap that is more than (actually 1008 pixels wide) The reason being that the blitter cannot handle it. When the new blitter/Agnus becomes available this will be possible but it isn't yet. With custom blits you can play games with multiple bitmaps although I suspect you can do that now since you can't display a 1024 wide bitmap yet. Hashing occurs when you don't wait for the bottom of the frame before scrolling. --Chuck McManis uucp: {anywhere}!sun!cmcmanis BIX: cmcmanis ARPAnet: cmcmanis@sun.com These opinions are my own and no one elses, but you knew that didn't you.