Arty computers
woodelf
bfranchuk at jetnet.ab.ca
Thu Feb 1 12:20:39 CST 2007
Jim Battle wrote:
-----
>>> The old GE machines with the "Thousands of Operations Per Second"
>>> analogue meters were kind of neat too.
> One way: pick off some signal that fires once per instruction execution
> -- say some signal that occurs in a particular decode phase of the
> logic. Buffer it and send it through a simple RC filter, which feeds
> the meter. Add a pot to scale things properly. The more instructions
> executed per second, the more pulses per second, the higher the average
> voltage put out by the filter. You might even be able to skip the RC
> filter since the meter has inertia.
I wonder what the meter RED Lined at? Did it meter all instructions
or just user tasks?
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