TI Editor/Assembler Fundamentals
Video (10:48)

In this episode, we kick off the first installment of a series about using assembly language on the TI-99/4A. We explore concepts of what assembly language is, numbering systems, addressing modes, and have a peek at moving data around with the operations MOV (move word) and LI (load immediate).

In this video, we cover the following:

• Assembly language in general, its capabilities and difficulties
• Using the E/A cartridge, floppy disks, and interface
• Understanding numbering systems and ASCII characters
• Looking at memory and storing things in it
• Addressing modes
• Example of moving data & displaying text
• Assembling & running your program

Charts and References

The following are links to charts and worksheets used in the video that you may download:

• ASCII code table.pdf - the table of the character in the ASCII set along with their hexadecimal values.
• VDP screen position worksheet.pdf - a diagram of the TI-99 screen's 32 x 24 character positions and lines' corresponding VDP addresses.

GREETMSG (Assembly language)

Demonstration of assembly from the video. Displays a welcome message on the screen.