PL0_test.c


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#include "uart.h"

void PL0_main(void)
{
  uart_puts("hello PL0!\n\r");

  while (1)
    {
      char c;
      switch(c = uart_getc())
	{
	case '\r':
	  uart_putc('\n');
	default:
	  uart_putc(c);
	}
    }
}