TI-92 Link Protocol Guide - Getting OS version

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OS version

By requesting the main\version, the calculator returns ROM version.

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#### Getting OS version only

Indeed, the request is like requesting a backup.

The protocol for silently receiving the version is shown below:

Step | Direction | Packet
--- | --- | ---
1 |  |  |  | REQ with request-style backup header. Name is "main\version".
2 |  | ACK
3 |  | VAR with data-style backup header.
4 |  | ERR

Example (PC requesting version):

PC: | `09 A2 12 00 00 00 00 00 1D 0C 6D 61 69 6E 5C 76 65 72 73 69 6F 6E 30 05` | Request informations
TI: | `89 56 00 00` | Acknowledgement of REQ
TI: | `89 06 0A 00` `00 04 00 00 1D 04 31 2E 31 31` `E6 00` | Variabel header (name is "1.11")
PC: | `09 5A 00 00 00 00` | Error

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