[TI-H] Re: Send / Get Protocol
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[TI-H] Re: Send / Get Protocol
Dear Mario,
I have similar plans for my TI-89, i.e. to use the communications port
with a PIC microcontroller. I do not know what the protocol for
handshaking is and I might eventually have to go through the reverse
engineering route myself.
Another option is to find some assembly code to write to the calculator
port directly. I already used a Z-80 code snippet for that purpose in an
embedded circuit. All I had was a single liner which was of the format
to load a character to the communications port. On some of the TI
calculators, it is possible to write on the calculator itself some
single line assembly instructions. I'll try to get that Z-80 piece of
code for you. I don't have it myself and have to ask the source. On the
TI-89, the microprocessor is different, but I still have my old TI-86
which is also Z80 based, so maybe I could try later. If you find
anything on the BASIC protocol, please let me know.
Frank
Mario Luzeiro wrote:
> yeps.. I have a program for PC (win98... XP dont like such
> kind of things) that display the bytes recived...
>
> but after I recive a pack from TI I need to send other
> pack...
>
> I think in that way I will need lots of time...
>
> any way.. if any one have a Idea for a Basic protocol that
> can share securly data.. tell me :)
>
> On Mon, 7 Oct 2002 09:20:57 -0700 (PDT)
> Nicolas Tarleton <jp_prongs@yahoo.com> wrote:
> >
> >If you can find or write a program that dumps all
> >communications coming through the linkport (for a
> >calc) or GRAPH-LINK (computer) in raw hex, then you
> >can experiment with various Send commands and figure
> >out the protocol. But this is only needed if you want
> >to interface with TI-BASIC programs. ASM programs can
> >use raw link communication.
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