Assembly with Mars

Computer Architecture: MIPS Memory Mapped Input / Output (MMIO) using the polling method.

Your task is to implement a device driver in MIPS that constantly polls the keyboard status register, reads the keyboard data register, then polls the display status, writes the keyboard data into the display data register and exits if the key combination Ctrl + C is pressed. This can be accomplished as follows:

1. Read RCR and check the LSB. If it equals 1, you can read RDR. Reading RDR gives you the ASCII code of the character typed in the keyboard area.

2. Read TCR if it is non-zero, you can write the data from RDR into TDR. If it is zero, wait until it is 1 before writing.

3. Loop forever

4. Exit the loop by watching for the key combination of CTRL+C as is commonly used to exit processes in a terminal / command line environment