[MyHD-develop] Annual update...

[Mike B. <i_a...@ho...>]

Hello, myhd-develop list subscribers.  I had a chance to
use a computer for a short time, so I checked up on the
status of the myhd project.  I noticed the posts on the
mailing list in November, and thought I might comment on
those.  Please be aware, however, that I cannot answer
any questions or continue a dialog.  I may get your response
when I continue the project in a year.

Anyone who wants to stab at the Windows driver is free
to do so.  The Korean version of the MIT site had older
driver releases when I last checked a year ago.  If you
can get to the Korean download page it might be worth
a shot.  Also, the community HiPix driver had debug info
last time I checked (a year ago).

If you have access to it at school/work/personal purchase,
IDAPro is probably the best tool.  IDAFree can't load the
large driver file.  All information I collected on the card is in
the linux driver source tarball.  There were a few things that
I had in my head that I didn't get down, but I'm sure you
will figure them out if you work on the driver.  Also check:

http://myhd.sf.net/reglist.html
http://myhd.sf.net/modelist.html

for a prettier version of the register and mode lists.

Another great tool (again, if you have access to it) is
SoftICE.  It's very useful for spying on the Windows driver
while it functions, and trying things out.  This is how I
initially figured out my first register (0x10000).

Finally, I modified the BtSpy from the Open Source bt8xx
driver project to become TL880Spy.  It attaches to the
first TL880 card in the system and allows monitoring some
registers and dumping the entire register contents.  It
can't capture I2C, unfortunately.  I wasn't a Windows
programmer, so the program still has a lot of improvements
that could be made.

http://myhd.sourceforge.net/tl880spy.php

Before I left I was looking at some of Teralogic's patents
at uspto.gov.  There's one that describes the OSD system.
I believe the emu10k1 driver was written using Creative
patents as a guide, so you might have some luck that way.
(For the curious, it's not duplicating the work of the patent,
it's using the patent as a reference to design a compatible
product which interfaces with the patented product)

The Audio Video Science forums are a good resource for
general Linux HTPC info.  http://www.avsforum.com/

Well, I have a different work to attend to.  Good luck with
the driver if anyone makes an attempt.  If you can get your
hands on a HiPix and an HD3000 (pchdtv.com), they both
use the same VSB demodulator; you could use the Oren i2c
driver from the HD3000 driver with the HiPix (in theory).  For
the MyHD someone has to figure out the ATI/NXTWAVE VSB
demodulator.  You need to implement interrupt handling
before getting into any capture or playback, though.  OSD
is probably implementable without interrupts, but I don't
remember everything exactly (it's been over a year).  The
HD3000 driver's tuner module has programming info for
the Phillips ATSC tuner on the MyHD.

I may check on the project from time to time, but I intend to
resume development in approximately one year.

Mike Bourgeous

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