Power BASIC and the Uncrashable Kingdom

I had it in mind to use Power BASIC as the compiler to implement the new DOS file server for the factory. This was a new, slicker and rebranded version of Turbo BASIC which I had been using for a while. It wasn't cheap. Power BASIC was a nicely polished compiler and had good documentation. I think we paid $300 or so for it.

I wanted to create a nice UI for the file server so I purchased a windowing library for Power BASIC. It made it easy to create text mode windows using graphics characters. The way it worked was very similar to the way that a Windows programmer would do it in C. You called functions which created windows, buttons, etc. These would return a numeric handle.

Your program would intercept messages from the UI library in an event loop and act on them. Each message would include the handle for the window or widget it was about, and also a value for an action such as a click or a key press. This is not an easy way to write windowing code, but the file server would have a simple enough UI. The end result looked nice and was functional.

I learned a lot on this project. This must have been the highest quality BASIC code I had written to this point. It was a multitasking file server using state machine techniques. Unlike its Xenix based predecessor, this file server never crashed once we had it up and running. Never.

Mousing Around

Since my Tandy 1000SX had high resolution graphics (if you could call monochrome CGA 640x200 high resolution) we thought it made sense to get a mouse and learn to program with it. Then we might be able to write even better software for the engineers to use when setting up each circuitboard for production. We had a crude graphical CNC simulator that ran on the Kaypro machines, so this could be a step forward for us with more detailed graphics and a mouse for a pointing device.

We bought the mouse at Radio Shack. It was a pretty nice little mouse, and it came with its own interface card like most mice did back then. I'm guessing that this mouse was made by the same people who made the the famous Microsoft Mouse. It was very similar. All the mice at that time had a ball for tracking movement, and this one was a metal ball with a rubber coating.

I believe that my first experiments with the mouse were in Turbo BASIC. There were no built in commands for the mouse. I don't remember exactly how the mouse was read either, but I remember there was documentation. Playing around with some code for drawing on the screen with the mouse inspired me to write an experimental character recognizer. I would draw letters on the screen and the program would attempt to convert them to ASCII characters. It really wasn't that hard to do, but prototypes don't have to be practical. It was fun.