83Plus:OS:Variable Versions

This page is to document the Version field in the TI-83 series calculators Variable header.

Version Bytes

Just for reference, here are the currently defined compatiblity levels for 83+/84+ programs and variables:

• 00h: TI-83/TI-83 Plus, all versions
• 01h: TI-83 Plus, all versions (tokens 'Archive' through 'GarbageCollect')
• 02h: TI-83 Plus v1.15 and above (tokens '~' through '%')
• 03h: TI-83 Plus v1.16 and above (tokens '...' through inverse '=')
• 04h: TI-84 Plus, all versions (tokens 'setDate(' through 'ExecLib')
• 05h: TI-84 Plus v2.30 and above (tokens 'invT(' through 'Manual-Fit')
• 06h: TI-84 Plus v2.53 and above (tokens 'ZQuadrant1' through 'FRAC')
• 0Ah: TI-84 Plus C SE v4.0 and above Not yet confirmed (see below)

Clock Tokens

In addition, 20h is added if the program contains any clock-related tokens. Presumably the intention was to allow some future 83+ OS to support the new tokens that don't require an RTC, but this never happened.

TI-84 Plus C SE

Finally, compatibility level 0Ah is apparently used for Pic variables on the TI-84 Plus C SE. I don't know about the new tokens for 84+C programs, but those will likely also be level 0Ah.