You can use IP cores to implement popular functionalities. One example is UART to which stdout is now redirected.
// Nios II - Prog/main.c
while(1) {
printf("U3U"); // 0x55, 0x33, 0x55
usleep(10000);
Qsys is a system integration tool to graphically connect IP functions and subsystems.
A start bit, eight data bits (LSB first) with no parity bit, and one stop bit.
