No one has any real technical info, because the chipset specs are locked
away at Apple and Cirrus Logic. The chipset is known as the "Voyager",
was developed by Cirrus Logic, and does many things, including:
-LCD control (framebuffer, I guess)
-PCMCIA controller
-DMA?
-IR?
Paul has a better idea of what it does.
As for where in memory it resides: Prism Research has some excellent tools
that you can use in order to do lots of mean and nasty things to your
Newton - look at cfkac/chARM and nsScribe:
http://hometown.aol.com/newtsprism
Kip Knight, the Prism Research guy, has done a lot of this mapping and
posted his stuff to the comp.sys.newton.programmer newsgroup - but I can't
find the entire memory map right now. I did find the location of the screen
though:
http://groups.google.com/groups?selm=3D8vcdnk%249cf%241%40nnrp1.deja.com
Oh, and here's the map:
http://groups.google.com/groups?selm=3D8uc0t7%24rs2%241%40nnrp1.deja.com
There are also QuickDraw routines somewhere in the ROM (I don't believe
anyone's found them yet) that the Newton uses to draw things so darn fast.
The only app to use them directly was Fractor, a fractal generator written
by an ex-Newton team member:
http://www.unna.org/unna/applications/Fractor0.1/
I guess if you had cfkac/chARM and a **lot** of time and ability to read
ARM assembler, and a working knowledge of the low-level NOS structure, you
could find out how to call these routines.
Also, check out the Newton Bowels project:
http://www.kallisys.com/newton/bowels/
-- Victor
Original Message:
-----------------
From: jrackley jrackley_at_electronicbingo.com
Date: Thu, 01 Aug 2002 07:20:50 -0700
Subject: [NTLK] Video Display Controller
Hello again everyone:).
Does anyone have a link or some info on the video controller used in the
MP2000 and the MP21000?
Eg: What was the name of the hardware, tech. docs, do we know where in
memory it resides?
Basically, I'd like to find a newtOS friendly way to write to the
display mem, (eg: like a device context w/ gdi in windows) without
having to use newton script (I can think of nothing less appealing:). If
one already exists, please let me know! Also, if someone has already
tried and hit a roadblock, I'd love to know that as well :)
Any help would be greatly appreciated!
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