Example Program

Some computers, such as the Digital Equipment Corporation (DEC) Vax, have specialized call and return machine instructions. But experimentally these add little to performance. The general purpose instructions of a reduced instruction set proved to be faster.

Here is an example program: the program is to read in lines of text from the user. Lower case characters from each line are converted to upper case. The user quits the program by entering a single character 'Q' at the start of a line.