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- Path: ifi.uio.no!usenet
- From: ludvigp@ifi.uio.no (Ludvig Pedersen)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: User Copper List help
- Date: 9 Mar 1996 11:23:51 GMT
- Organization: Dept. of Informatics, University of Oslo, Norway
- Message-ID: <1142.6641T588T2073@ifi.uio.no>
- References: <4hmqbk$qpt@macondo.dmu.ac.uk>
- NNTP-Posting-Host: gymir.ifi.uio.no
- X-Newsreader: THOR 2.22 (Amiga;TCP/IP)
-
- >Heya there
- >Ive opened an intuition screen in a nice friendly os multitasking way
- >and now im trying to install a user copperlist
- >onto that screen so I can double all the pixel
- >heights vertically
- >using the old modulo changing trick.
- >Thing is it dont like it!
- >I seem to be able to install a user copperlist ok
- >(can change colors and all that with it)
- >but if I so much as breath on the modulo settings
- >with the copperlist the display garbles at that point on the screen.
- >(Even if i set the modulo values to 0 so it doesnt play around!)
-
- >can any one PLEASE help!
-
- Yes, you must find the modulo values used by the system and the width of your
- screen. So you can compute the right values for double pixel height. You also
- have to consider double-scan. Then the modulo registers work in a slight
- different way.
-
- Btw: We have made a working example in our ChunkyScreen v2.0.
- There you will find a easy-to-read example in C on how to do it.
-
- I can mail it to you as soon as its released. It will probably be this
- weekend or early next week.
-
-
- <sb>Ludde - Amiga Demo Coder
- <sb>Virtual Reality & Official Be developer
- <sb>ludvigp@ifi.uio.no
-
-