Messages in this thread |  | | From | Ralf Baechle <> | Subject | Re: [LINUX-KERNEL] HDD Noise stopped with cat /dev/zero | Date | Fri, 18 Oct 1996 12:14:55 +0200 (MET DST) |
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Hi,
> Somewhere back in the '50 or '60 Philips also made mainstream computers. > They got a patent on a method to monitor the CPU performance: they > connected an amplifier and a speaker to one of the address lines of the > CPU. In those days the CPU clock wasn't that fast, so it was possible > to hear the address lines switch. If the sound stopped, you knew that > your program crashed and you had to start all over. > > Any volunteers to design such hardware for PCs? Not that Linux crashes > that often... If we also modify gcc to generate nice tunes:
Hacking on the 68k mm I found someting in the 68030 manual - the 68030 generates of the half length of a clock pulse when fetching the first word of an instruction on a CPU pin even when the actual instruction comes from the cache. Add some trivial electronics and a display et voila - a original MIPS-O-Meter (TM).
This is getting off topic ...
Ralf
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