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Subjectreliable debug output
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when debugging drivers using printk i've the problem that most often 
the msg passed to printk don't show up on the console since the machine
crashed before. i also what to use my own ASSERT macros which halt the
machine immediatly on an error. i could write some functions that write
the debug string to the serial port but this is impractical since if've
a cluster of pc and i can't connect them all to some serial lines for
debugging. are there some functions which write directly into the graphic
cards ram assuming that thy operate in console mode, no x-server running?
or is ther any other way to for reliable debug prints.
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