home *** CD-ROM | disk | FTP | other *** search
- Short: Sets productivity 4 for fast audio DMA
- Uploader: wenzel@unixserv.rz.fh-hannover.de
- Author: wenzel@unixserv.rz.fh-hannover.de
- Type: gfx/board
-
- -- Prod 1.0 - a simple, small hack for gfx board owners --
-
- Have you ever been tired of listening to a sound at the wrong playback
- rate because the program you used tried to play it with DMA >28 kHz?
-
- Well, this might be the solution because I figured out the following:
-
- - When the Amiga chipset is currently displaying a productivity screen,
- even high sampling rates are possible. That's a hardware reason I don't
- want to explain here.
-
- - So when I open a productivity screen on my Picasso-II equipped A3000,
- the playback works as expected.
-
- - BUT: When I close the productivity screen and the Workbench comes to
- front again, it STILL WORKS!
-
- - Obvious reason: The Picasso driver keeps the Amiga display in productivity
- mode after closing the screen as long as no other non-productivity using
- the Amiga chipset opens up.
-
- - So why not write a program that just opens a productivity screen and
- closes it again?!?
-
- Well, here it is!
-
- It opens a full sized (640x400), one plane deep productivity screen, and
- closes it again immediately, so the mouse pointer should be on its old
- position after the program exits.
-
- If the screen cannot be opened, nothing happens at all :-)
-
- Legal stuff
- -----------
- Prod is public domain. The source is included. Use it at your own risk!
-
- There shouldn't be any bugs in such a small program but if it crashes,
- I take no responsibility.
-
- It works on my configuration of the Picasso-II board. It may work as well
- on other revisions of the Picasso drivers or even on other gfx boards but
- it may, however, have no effect at all. Try it out and please mail what
- you've found out.
-
- Miscellaneous
- -------------
- Have a look at Play16, available on AMINET, too!
-
- ---
- wenzel@unixserv.rz.fh-hannover.de (Thomas Wenzel)
-