From: Sriramkumar Raju <rsriramkumar@gmail.com>
To: ecos-discuss@sources.redhat.com
Subject: [ECOS] Keyboard issue
Date: Tue, 31 May 2005 21:55:00 -0000 [thread overview]
Message-ID: <7de07eff05053105095705e2f3@mail.gmail.com> (raw)
Hi,
I am working on porting of Redboot to i386 platform with VIA rhine
ehternet controller.
I am able to boot the system with red boot.
once booted when i press any key like "asdfghjkl" all where displayed
in CAPS "ASDFGHGJKL" in the command line. (The caps lock was not on).
So i checked the source code and found that the "KBScanTable" array
was corrupted from index "0x1E" ie. 'a'. till index 0x35 ie..'/'....
the corruption is such that the columns are shifted left by one column...
KBScanTable with 4 columns
Actual values are as follows...
column 0 1 2 3
'a ' 'A' 0x01 0xFF
In my case it had become
column 0 1 2 3
'A' 0x01 0xFF 'a'
this behaviour is observed till character '/' in the KBScanTable .
so i made a fix by changing my KBScanTable so that this will get
properly aligned in memory.
from 'a' to '/'.
Now the keyboard is working fine...
i want to know what might be the problem....Is it a endian
problem...or boundary alignment problem.
Help in knowing what it is...
Regards,
Sriram.R
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reply other threads:[~2005-05-31 12:09 UTC|newest]
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