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README.md

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.
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