On 06.09.2011 02:05, Lennart Sorensen wrote: > If the UART (not grub) interprets noise as valid data, then it will pass > that to grub which legitimately sees that as keypresses. I agree with both sides of dispute. It's a hardware bug but GRUB has reliability and unattended boot as one of its goals. And this noise can be detected. Noise is likely to have two neighbouring bits equal (due to noise not being on the same frequency as serial speed) and unlikely to produce a lot of valid characters. I propose to buffer serial input for 200/speed seconds and after this period do a small analysis and in case of bad data discard the whole buffer.
-- Regards Vladimir 'φ-coder/phcoder' Serbinenko
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