TI-84 Plus and Silver Edition Manual

Memory and Variable Management 95
Each variable that you archive is stored in the first empty block large
enough to hold it.
This process continues to the end of the last sector. Depending on the
size of individual variables, the empty blocks may account for a
significant amount of space. Garbage collection occurs when the variable
you are archiving is larger than any empty block.
How Unarchiving a Variable Affects the Process
When you unarchive a variable, it is copied to RAM but it is not actually
deleted from user data archive memory. Unarchived variables are
“marked for deletion,” meaning they will be deleted during the next
garbage collection.
If the MEMORY Screen Shows Enough Free Space
Even if the MEMORY screen shows enough free space to archive a
variable or store an application, you may still get a Garbage Collect?
message or an
ERR: ARCHIVE FULL message.
variable B
variable C
variable A
variable D
Depending on its size,
variable D is stored in one
of these locations.
Sector 1
Sector 3
Sector 2
Empty
block
variable A
variable D
After you unarchive
variables B and C, they
continue to take up
space.
Sector 1
Sector 2
Sector 3