10 Chapter 2: TI-83 Plus Specific Information
TI-83 Plus Developer Guide Third Release May 28, 2002
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.
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