🚀 go-pugleaf

Philip Dearmore writes the following

>Anyway, the thing is, I was browsing through some of the programs on the 85
>archive and noticed that data can be sent by a program through a COM port to
>the calculator.

>Now, instead of paying the $70 that one costs directly from TI, would it be
>feasable to make on by combining a stereo headphone type jack with a serial
>cable?

>If so, has it been done?  If so, could you send me technical specs on it so I
>don't have to figure out which wires to connect to which other wires.  And if
>this kind of data isn't available, would someone be willing to send me a
>diagram of the pins on a serial plug so I don't have to just mindlessly probe
>to find what the right connections are?

>Thanks ALOT in advance.

The jack which plugs into your calculator is not a stero plug.  It has three
contacts.  To see this for yourself, dig up that old cable which came with
your caclulator.  If you can find it, look at one end and you will see that it
has three places to connect.  Therefore, even with pin diagrams, you cannot
use an ordinary stero plug.
	Furthermore, I have hear that there is some proprietary circuitry
inside the end of that plug.  So, even if you could find the pin out, and
a plug with three connections, you still couldnt build a plug.  Sorry.

Rick Seiden
V064Q5C3@ubvms.cc.buffalo.edu
You know your school cares when the give you an id like V064Q5C3