Boot (Code) Area; Certification Area; Operating System (Os) Area; Certificate List Area - Texas Instruments TI-83 Plus Manual

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The explanations of some Flash ROM areas below are for informational purposes only.

Boot (Code) Area

This area contains the following unalterable items.
Boot-strap code
System initialization code
Software validation routine
Program download routine
Software product ID
Product code update loader

Certification Area

This area contains program authentication information.
Calculator serial number
Unit certificate public key
Date-stamp public key
Date-stamp certificate
Unit certificate and license status
Group certificates

Operating System (OS) Area

This area contains the operating system of the calculator — math, display, keyboard,
I/O, etc. routines.

Certificate List Area

This area contains a list of unit certificates for the specific calculator.

User APPS (Calculator Software Applications)/Data Area

This area is shared by applications and variables archived by the user for long-term
storage.
TI-83 Plus Developer Guide
Chapter 2: TI-83 Plus Specific Information
Third Release May 28, 2002