TI-73 Link Protocol Guide - Remote Control

Remote control

The TI-73's remote control ability is "silent," which means that the calculator does not need to be put in a special mode. The remote control ability can be utilized any time the calculator is ready to accept a keypress.

Remote command:

The protocol used for sending a remote command is shown below.
Step Direction Packet
1 
Computer
===>
Calculator
 CMD
2 
<===
 ACK

The scancode of the key is sent in the last two bytes of the command. Scancodes are defined in the section ?? TI-73 guidebook or can be found in the TI83+ FLASH SDK (ti73.inc).

Example:
PC: 07 87 9B 00 Command: Key <B>
TI: 74 56 9B 00 Acknowledgement of command

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