Hanging ATAPI in CE.NET 4.2

From: Brian Moore (BrianMoore_at_discussions.microsoft.com)
Date: 08/30/04 

Date: Mon, 30 Aug 2004 10:21:10 -0700

Hello.
I have been working on a build for an Advantech PCM-3350 SBC. I have been
working through problems. The one I am fighting now occurs when I use Wordpad
to edit small text files. I have found that everything works fine if the .txt
file is less than 512 bytes long. If the text file takes up more than one
sector on my IDE disk, the system hangs hard. I can't get control of the
system and must reboot. We are using a 60 GB TravelStar IDE drive. I am
reading from a FAT16 partition when it hangs.

I have been placing breakpoints in the ReadWriteDiskDMA routine in
diskmain.cpp.
I have found the system hangs when I enter the routine BeginDMA and actually
start the file read. I suspect the memory that I want to place the data from
the disk into is fouled up somehow.

Has anyone out there seen similar problems and if so, what did you do to fix
the problem? Any recommendations on how to debug something like this?

Thanks,
Brian 

-- 
Brian