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Ti-83 and Ti-84 Assembly Programming

Getting Started
     1.1: About This Tutorial
     1.2: About TI-ASM
     1.3: Writing Your First Program
     1.4: Compiling
     1.5: Debugging
ASM Basics
     2.1: Calls and Jumps
     2.2: Registers
     2.3: Displaying Text
System Controls and Calls
     3.1: Data
     3.2: Register Stack
     3.3: If Statements (Comparing)
     3.4: GetKey and GetCSC
     3.5: System Flags
     3.6: Menus
     3.7: Displaying Pictures
     3.8: For Loops (djnz)
     3.9: White Loops
     3.10: OP Registers
Applications
     4.1: Apps vs ASM
     4.5: KeyHooks

Data

There are two types of things stored in a computer: executable code and data. Mostly we have been working with executable code. Data in an assembly program is specified by a ".db" before a string of data. Data can be in any form, but it gets converted to hex when compiled. Below is a table of data types:

Type	Suffix	Example
Binary	b	01001011b
Ternary	t	01021012t
Octal	o	8024o
Decimal	d	245d
Hexadecimal	h	CEh
ASCII	"..."	"Hello"

If you do not specify a base by adding a suffix to your data, then it is assumed that it is in decimal, or base 10. You will usually see data in the following format:

DataStuff: ;<-- This is the label
.db 0CEh,0FFh,011h,012h ;<--This is the data

If you wanted to put the value "FFh" in data (or any value), you could either use $FF or 0FFh. We chose the latter in our example. Nothing is required for the label, but we recommend using the following prefixes to keep things in order:

Type	Prefix	Example
Raw Data	dt	dtAppVar
Text/String	txt	txtHello
Image Data	img	imgSplash
Executable Code	Nothing	ClearScreen

The text in this tutorial is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License.