Re: [PATCH] Experimental IDE oops dumper v0.1

Rob Landley
2002-09-16T14:39:13Z

On Monday 16 September 2002 08:39 am, jbradford@dial.pipex.com wrote:
> Talking about dumping oopsen, would there be any usefulness in outputting
> crash data to the PC speaker, using a slow, (~300 bps) modulation that
> would survive being captured on a cassette using a walkman with a
> microphone, then decoded using a userspace program from a sampled .au file?

This is easier and less error-prone than copying the oops down by hand?

I remember using 300 bps. On a closed electrical circuit without acoustic
couplers, you still got line noise. Acoustic couplers put the speaker and
microphone right on top of each other and surrounded them with a muffler to
try to minimize ambient noise from the room...

> Just thought it might be easily implementable, as it doesn't have any
> pre-requisits, (other than having a PC speaker, which *almost* everybody
> has).

Not everybody has a tape recorder, though.

And the -ac branch already does output in morse code. Try taping that and
writing a user mode interpreter for it, if you like...

> John.