ticalc.org - Features programming tutorials, columns, news articles, and thousands of files for download. Texas Instruments' FTP Site - TI's FTP site, containing Graph Link software, math and science programs, CBL applications, and a few games. Sami Khawam's Homepage - A general TI site with an emphasis on hardware, including linking software, infrared linking information, and a memory expander. C2 Coding - Contains programs for the TI-83+, TI-85, and TI-89, with tutorials, programming contests, and links. TeZXas - ZX Spectrum emulator for the TI-89 and TI-92+. Texas Instruments - TI's calculator division and the official site about TI calculators. Includes information about calculator models, computer linking software, and some math applications. TI-8x Programming - Games and programs with descriptions and programming tutorials for the TI-82, TI-83, TI-85, and TI-86. DoorsOS - TI-89 shell for running assembly programs that includes crash protection. ti.zewaren.net - Online converters and tools for Texas Intrument calculators. TI-Basic Developer Repository - Provides information and tutorials on programming in TI-BASIC for all modern TI graphing calculators. Fryed Software - Contains BASIC programs for nearly all TI calculators as well as information and screenshots for upcoming programs. Omnimaga: The Coders Of Tomorrow - The most active TI graphing calculator programming group on the web. Also have a big RPG download section. Calcblog - Graphing and financial calculator tutorials, programs, blog, and downloads covering the TI-83, TI-84, TI-89, and Voyage 200 series, as well as the TI BA II Plus and HP 12c financial calculators. Region IV ESC Texas Instruments TI-83, TI-82, CBL, CBR, and Graphlink Tutorial Page - Presents a tutorial for the use of the TI-82 and the TI-83 plus Texas Instruments graphing calculators. It also presents a tutorial for using Texas Instruments' CBL and CBR data collection devices as well as Texas Instruments' Graphlink computer interface. Shiar's TI Calculator Page - Games and programs with screenshots and descriptions for the TI-83, TI-85, and TI-86, along with polar graphing information. Statistical Inference on the TI - Problems and solutions about statistics for TI's, intended to supplement a general descriptive statistics course. United-TI - Message board for topics related to TI graphing calculators; covers programming, games and other projects, math, and troubleshooting.