MELPS740
MELPS740 is SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER manufactured by Mitsubishi Electric.
MITSUBISHI MICROPUTERS
MELPS 740
SINGLE.CHIP I- BIT CMOS MICROPUTER
MELPS 740 CPU CORE BASIC FUNcn ONS
Each series of the MELPS 740 Family uses the standard MELPS 740 instruction set. The functions of the MELPS 740 CPU core are explained below. The multiply and divide in'structions are not available in every microputer, and the clock control instructions differ in each microputer. For details, refer to the table of machine instruction or the functional explanation of each microputer.
CENTRAL PROCESSING UNIT (CPU) INTERNAL REGISTERS
The central processing unit (CPU) has the six registers.
Accumulator (A)
The accumulator is an a-bit register. Data operations such as data transfer, etc., are executed mainly through the accumulator.
Index register X (X), Index register Y (V)
Both index register X and index register Yare a-bit registers. In the index addressing modes, the value of the OPERAND is added to the contents of register X or register Y and specifies the real...
