TI-73 Link Protocol Guide v1.0 - Manual Variable Transfers (to do...)

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Manual Variable Transfers

The TI-73 uses manual transfer protocols when it is in Link mode. On the sending unit a user must choose the variables to be sent, and the receiving calculator must be put into a special reception mode.

The protocol for all manual variable transfers is shown below. For information on packet formats, click here.

A computer can be either the sending unit or the receiving unit.

Step | Direction | Packet
--- | --- | ---
1 |  |  |  | VAR
2 |  | ACK
3 |  | CTS or SKIP/EXIT. Do step 4 (send the ACK). Then if skip, skip to step 7, or if exit then stop.
4 |  | ACK
5 |  | DATA
6 |  | ACK
7 |  | EOT or another VAR. If var, go to step 2.
8 |  | ACK

The data packet contains the variable data. For information on variable formats, click here.

Example (PC sending variables to TI):

PC: | `73 06 0D 00` `09 00 00 41 00 00 00 00 00 00 00 00 00 4A 00` | Variable Header: Real Number "A"
TI: | `73 56 00 00` | Acknowledgement of header
| `73 09 00 00` | Clear to send variable
PC: | `73 56 00 00` | Acknowledgement of CTS
| `73 15 09 00` `00 80 12 56 34 78 85 25 55 93 02` | Variable data: "1.2563478852555"
TI: | `73 56 00 00` | Acknowledgement of data
PC: | `73 06 0D 00` `09 00 00 42 00 00 00 00 00 00 00 00 00 4B 00` | Variable Header: Real Number "B"
TI: | `73 56 00 00` | Acknowledgement of header
| `73 36 01 00` `02 02 00` | Skip variable
PC: | `73 56 00 00` | Acknowledgement of variable skip
| `73 92 00 00` | No more variables
TI: | `73 56 00 00` | Acknowledgement of EOT

Screenshots | Table of Contents | Silent Transfers

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