This project aims to create a complete compiler for the TI BASIC programming language. TI BASIC was the dialect of BASIC created for the TI-99/4A.

Current Status

The project is currently in pre-alpha. (Updated 1/20/2007)

Simple programs that do not use any of the graphic or sound subroutines can be parsed and compiled.

Completed

• LET (assignment) statements
• REM comments
• END/STOP
• GOTO and ON-GOTO
• GOSUB/RETURN
• IF-THEN-ELSE
• FOR-TO (STEP is not implemented. Counting is by 1)
• NEXT
• INPUT (from Console)
• READ
• DATA
• RESTORE
• PRINT/DISPLAY (to Console)
• CALL CLEAR
• Multi-dimensional arrays
• Numeric Functions (ABS, ATN, COS, EXP, INT, LOG, RANDOMIZE, RND, SGN, SIN, SQR, TAN)
• String Functions (ASC, CHR$, LEN, POS, SEG$, STR$, VAL)
• DIM
• Arithmetic Operators: ^, +, -, *, /
• Relational Operators: <, <=, >, >=, =, <>
• String Operator: &
• Numeric Constants (including Scientific Notation)
• String Constants

Not Implemented

• File I/O (OPEN, INPUT, PRINT, CLOSE, EOF, RESTORE)
• Option Base
• CALL COLOR
• CALL SCREEN
• CALL CHAR
• CALL HCHAR
• CALL VCHAR
• CALL SOUND
• CALL GCHAR
• CALL KEY
• CALL JOYST
• DEF (user defined functions)
• Interpreter commands (NEW, LIST, RUN, BYE, NUMBER, RESEQUENCE, etc.) These will not be implemented, as they only make sense in an interactive mode.