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controlling GPIOs from DOS (Announce)

posted by bretjohn Homepage E-mail, Rio Rancho, NM, 04.12.2013, 17:26

You're going to need to go into a little more detail on what you mean by "real world". Something inside the computer, next to the computer, in the next room, down the street, halfway around the world, a plane or satellite flying through space, ...? Do things like bandwidth, speed, latency, security, reliability, electromagnetic/radio-frequency interference immunity, etc., matter? Is the communications simplex, half-duplex, or full-duplex? What kinds of protocols, voltage/current levels, etc. does the device with which you're trying to communicate understand?

There are hundreds of different protocols and standards, all designed for specific demands and requirements, and you can even come up with some proprietary ones of your own if you feel like it. Just as a simple example, look at the plethora of standards there are/have been used to get video signals to a monitor (to name but a few: MDA, CGA, EGA, VGA, SVGA, 8514/A, XVGA, digital (MDA/CGFA/EGA) cables, analog (VGA) cables, DVI, HDMI, interlaced, non-interlaced, etc. -- and we won't even talk about all of the television standards).

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