01 8. Write an exception handler for the following situation: A character arrives in the UART If the top two bits of that character are ll, 10 or OX, you should output through the UART the letter A, B or C, respectively Your interrupt was a normal interrupt, as opposed to a fast interrupt. This UART is located at memory location OxE0001000, with the FIFO register located at offset Ox80 into that location. xtremely briefly explain yhy in this handler you don'theed to check if a character has rrived in the UAR 01 8. Write an exception handler for the following situation: A character arrives in the UART If the top two bits of that character are ll, 10 or OX, you should output through the UART the letter A, B or C, respectively Your interrupt was a normal interrupt, as opposed to a fast interrupt. This UART is located at memory location OxE0001000, with the FIFO register located at offset Ox80 into that location. xtremely briefly explain yhy in this handler you don'theed to check if a character has rrived in the UAR