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From: nygardm@nntp-server.caltech.edu (Michael T. Nygard)
Newsgroups: comp.sys.amiga.programmer
Subject: Copper list help requested
Summary: Copper lists in HRM don't work
Keywords: copper
Message-ID: <1991May7.034044.26814@nntp-server.caltech.edu>
Date: 7 May 91 03:40:44 GMT
Organization: California Institute of Technology, Pasadena
Lines: 25

I've been trying to go through the Copper list examples in the Hardware
Reference Manual, but I can't make them work.  Here's the deal.

I'm looking at page 24-5, and the sample copper list.  I wrote a bit of
wrapper code to just startup, load the copper list, and start it. (It's not
very friendly...takes over the machine... busy waits, but hey! I'm just
starting in assembly!)  I know the wrapper code runs OK, but I run into trouble
with the copper list itself.  

The example needs real bitplanes.  I'd like to use the active view, but I can't
seem to get a bitplane pointer (GfxBase->ActiView->ViewPort->RasInfo->BitMap->
Planes is NULL somewhere along the line.)

Next, I think the list as shown is wrong.  The register offsets should be
shifted left by one bit, shouldn't they?

I'd appreciate it if some wizard out there could point me in the right direction
or, even better, mail me a code sample!

Many profuse thanks, and all that.

-- 
--------
Mike Nygard
nygardm@coil.cco.caltech.edu