[sdiy] Replacing chips with a microprocessor

[Thomas Strathmann]

On 27.11.13 00:04, quicksilvercarrier wrote:
> I like this idea of being able to replace CMOS chips with a
> microprocessor. Are there any tutorials or other documentation  that
> might help me match a microprocessor program to a chip or work out how
> to eliminate chip(s) as per Tom's suggestions?

Apart from electrical or timing considerations (if the logic you want to
replace is part of a bigger circuit that depends on the exact behaviour
of the logic chips you want to replace), this all boils down to the
basics of logic circuits. Try the keywords combinatorial and sequential
logic. The boolean expressions that you can associate with a
combinatorial logic circuit map directly to the corresponding
expressions in C or most other higher-than-assembly level language.
If you have circuits with feedback and/or clocks you have to introduce
delays into your simulation by buffering some intermediate values. How
exactly you'll want to implement this depends on the desired function of
your circuit and the processor you're using.

	Thomas