Читать книгу Microprocessor 4 - Philippe Darche - Страница 36

The assembler can offer addressing modes that do not exist in the MPU. Each instruction using them will be replaced by an equivalent logical sequence. One example is symbolic addressing, which facilitates programming of a jump to a specific location in the code marked by a symbolic name called a label (cf. § V5-1.3.3). This mode belongs to assembly language (cf. § V5-1.3), unlike those seen previously in this chapter which belong to machine language. It is used to make a jump to a precise place in the code marked by this symbolic name. One example is MPU MIPS R2000/R3000 (Kane 1988).