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- From: swalter@avalon.physik.unizh.ch (walter stefan)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Bug in ECS?
- Message-ID: <1992Aug27.143509.7372@ifi.unizh.ch>
- Date: 27 Aug 92 14:35:09 GMT
- Sender: news@ifi.unizh.ch (USENET News Admin)
- Organization: University of Zurich, Department of Computer Science
- Lines: 21
- Nntp-Posting-Host: avalon
- X-Newsreader: Tin 1.1 PL4
-
- I'm currently writing a tool which disables the Workbench screen.
- However, for some reasons it will need to switch it on again at
- the end. It does this by enabling copper DMA again and by directly
- writing the neccessary values for a lores 5 plane 320x256 display
- in the corresponding registers (bplcon0 etc.). Now I've noticed
- that this causes more or less big problems for Amigas with ECS.
-
- What happens is that although the Workbench screen is back, a red
- bitplane containing garbage is laid over it and stays there for upto
- 2 seconds. After that it fades away in stripes, leaving the screen
- as it should be.
-
- Now, does anyone know why this happens or had the same problem earlier
- and has found a solution? I'd be really glad for any hint. Thanks.
-
- Stefan Walter
-
- --------------------
- Stefan Walter avalon.physik.unizh.ch!swalter
- Finsterruetistr. 57 or
- 8135 Langnau stefan@pegasus.ch
-