Texas Instruments TI-83-Plus

Table of Contents (continued)
TI
−
83 Plus Developer Guide Third Release May 28, 2002
iii
Creating Variables.........................................................................36
Storing to Variables.......................................................................39
Recalling Variables........................................................................40
Deleting Variables.........................................................................41
Archiving and Unarchiving.............................................................43
Related Routines ................................................................................ 44
Accessing Archived Variables without Unarchiving............................ 45
Manipulation Routines...................................................................49
List Element Routines......................................................................... 49
Matrix Element Routines..................................................................... 49
Resizing AppVar, Program, and Equation Variables .....................50
Symbol Table Structure.......................................................................52
Floating Point Stack (FPS)..................................................................57
Naming Convention.......................................................................58
General Use Rules.............................................................................. 58
FPS System Routines...................................................................59
FPS Allocation Routines ..................................................................... 59
FPS Deallocation Routines................................................................. 60
Copy Data To and From Existing FPS Entries.................................... 61
Drivers Layer......................................................................64
Keyboard......................................................................................... 64
Display ............................................................................................ 71
Displaying Using System Routines......................................................71
Display Utility Routines..................................................................71
Displaying Text..............................................................................72
Formatting Numeric Values for Display...............................................76
Entry Points...................................................................................76
Modifying Display Format Settings......................................................77
Writing Directly to the Display Driver...................................................77
Reading the Display Driver After Setting X or Y Coordinates ........80
Contrast Control..................................................................................82
Split Screen Modes.............................................................................82
Graphing and Drawing — What’s the difference?........................... 84
Drawing...............................................................................................84
Graphing.............................................................................................84
Graphing and Drawing Utility Routines................................................84
Drawing Routine Specifics ..................................................................85
Graphing Routine Specifics.................................................................88