Recently, I have started trying out making programs for my Treo 650. Firstly, I tested PalmOS Developer Suite but as I am not familar with the programming style of it, I then switched to SmallBASIC. I chose SmallBASIC because it is very easy to use and have enough documentation right from the menu. I spent the spare time of 2 days and finally made a workable calculator. However, SmallBASIC is not designed as a IDE for developing software for distribution. The program I create have to be distributed as source code and requires compiling before every run. It is not acceptable for my program. I then switch (again!) to PalmPascal which is very powerful. It can compile source code to PRC files and supports programming console programs, hack programs, and even DA programs! However, due to the lack of documentation, the learning curve is very steep, even I already know how to program in Pascal. I hope can complete the calculator application very soon.