An Overview Of VHDL Keyboard Input
Interfacing the UP1/UP2 with the keyboard seemed fairly trivial once the communication protocol was understood. Since we get to control the clocking of data from the keyboard VHDL can make quick use of any keyboard key presses.
What To Do Now
Now you have a standard input device! You can do so many things at this point. Mapping the entire keyboard, making lower/upper case characters, or creating a terminal like dos or a unix shell. These are all things you can now do with your knowledge of VGA, Character Roms & now Keyboard input. Get to it!
Conclusion
This tutorial was quite fun to make since we finally have an input method for the UP1/UP2 other than dip switches and push buttons. The keyboard definitely the most widely used input device in the world. And so since it worked, the tutorial was a success. The code is clean and concise...but most importantly, it works well!
If you have any further questions, I implore you...don't be shy, take a look at the forums or ask a question there. I check them out regularly and love getting comments & questions.
Interfacing the UP1/UP2 with the keyboard seemed fairly trivial once the communication protocol was understood. Since we get to control the clocking of data from the keyboard VHDL can make quick use of any keyboard key presses.
What To Do Now
Now you have a standard input device! You can do so many things at this point. Mapping the entire keyboard, making lower/upper case characters, or creating a terminal like dos or a unix shell. These are all things you can now do with your knowledge of VGA, Character Roms & now Keyboard input. Get to it!
Conclusion
This tutorial was quite fun to make since we finally have an input method for the UP1/UP2 other than dip switches and push buttons. The keyboard definitely the most widely used input device in the world. And so since it worked, the tutorial was a success. The code is clean and concise...but most importantly, it works well!
If you have any further questions, I implore you...don't be shy, take a look at the forums or ask a question there. I check them out regularly and love getting comments & questions.