The file is then downloaded to the target system. Most programming languages support data types like characters and integers. The processor treats all data the same, and if the program goes astray, can interpret data as instructions and vise versa. Lets look at how elementary data is represented by the programmer for use in assembly language programs. Values range from 0 to 127.
Some processors have different instructions for operations on signed and unsigned integers.
Character Arrays are essentially text strings. DFS 10 allocates 10 locations for a character based array called Digits . The following routines are typical of functions which are performed on character based arrays. Copy This copys a source string to a destination area. Writing this type of routine is ideally suited to a processor which has more than one Index or Base register.