www.gregd.org

Once upon a time I wrote software for TI graphing calculators. This occurred during the end of High School (my family purchased a “real” PC my junior year) and throughout college. I placed very well in several FLASH (C programs that run from flash memory on the calculator) application development contests which were held by the E&PS division of TI. One year I was given the privilege of an all expenses paid trip to Nashville Tennessee where I spoke at the T³ (tee cubed) International Teacher’s Conference in 2003. In 2006 I was a mentor for Detached Solutions in the Google “Summer of Code” and attended the SoC conference at Google in Mountain View that year.

I wrote software for the TI-86 (Z-80 Assembly Language), and the so called 68k graphing calculators (TI-89, TI-92+, Voyage 200) using M68K Assembly Language and a lot of C. At the time I was a veritable expert of the C language and contributed heavily to the TIGCC (a GCC cross compiler) discussion boards and occasionally the project itself.

Here are a few links to my work:

• TICalc.org author profile – The definitive list of my work for calculators
  
• Detached Solutions- A pretty awesome group of geeks
  • Command Post Plus
  • Super Start
  • RoboCalc
• CalcG.org
• calc.gregd.org – my old website dedicated to the software I created for calculators