中文版
Description
AMM42 Yokogawa control unit
The control unit is the command and control center of the whole CPU, which refers to the Register IRInstruction Register, Instruction Decoder ID (Instruction Decoder) and operation controller 0COperationController, etc., which is extremely important to coordinate the orderly work of the whole computer. According to the user’s pre-programmed program, it takes out each instruction in the memory in turn, puts it in the register IR, determines what operation should be carried out by the lift code (analysis), and then sends a micro green signal to the corresponding component according to the determined timing by operating the controller OC. The operation controller OC mainly includes the control logic of beat pulse generator, control matrix, clock pulse generator, reset circuit and power off circuit.
AMM42 operation unit of Yokogawa Electric
AMM42
It’s the heart of the operation dew. It can perform arithmetic operations (including basic operations such as addition and subtraction multipliers and their additional operations) and logic calculations (including shift, logic test or two-person value comparison). Relative to the control unit, the arithmetic device accepts the command of the control unit and performs actions, that is, all operations carried out by the arithmetic unit are commanded by the control signal issued by the control unit, so it is an executive part. Memory cell
Yokogawa AMM42 includes CPU on-chip cache and register group, which is a temporary storage of data in the CPU, which stores the data waiting to be processed or has been processed. The time used by the CPU to access the register is shorter than the time used to access the memory. The use of registers can reduce the number of CPU access to the memory. Thus improving the working speed of the CPU, but because of the chip area and integration, the capacity of the register group can not be very large, the register group can be divided into special registers and general registers, the role of the special register is fixed, respectively, the corresponding data storage. General purpose registers are versatile and can be specified by the programmer, and the number of general purpose registers varies from microprocessor to microprocessor
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