Description
Technical Requirements UAA326A04 HIEE300024R4 :
1. The instruction register is used to store the instructions being executed. The instruction is divided into two parts: the opcode and the address code. Opcodes are used to indicate the operational properties of instructions, such as addition, subtraction, etc. Address code gives the operand address of this instruction or information about forming the operand address (in this case, the address formation circuit to form the operand address). There is a kind of instruction called transfer instruction, it is used to change the normal execution order of instructions, this instruction address code section gives the address of the instruction to be forwarded to execute. 2. Opcode decoder: It is used to decode the opcode of the instruction, generate the corresponding control level, and complete the function of analyzing the instruction. 3. Timing circuit: used to generate time signal. In the microcomputer, the time signal is generally three levels: instruction cycle, bus cycle and clock cycle. The micromanipulation command generation circuit generates various micromanipulation commands that complete the operations specified by the instruction. These commands are mainly based on the time signature and the operational nature of the instruction. The circuit is actually the circuit realization of each microoperation control signal expression (A→L expression above), it is the most complex part of the combinational logic controller. 4. Instruction counter: used to form the address of the next instruction to be executed. Normally, instructions are executed sequentially, and instructions are stored sequentially in memory. Therefore, in general, the address of the next instruction to be executed can be formed by adding 1 to the current address. The microoperation command “1” is used for this purpose. If a transfer instruction is executed, the address of the next instruction to be executed is the address to be transferred to. The address is in the address field of the transfer instruction and is sent directly to the instruction counter. Microprogram controller is proposed because combinatorial logic design is not easy to design, not flexible, not easy to modify and expand.
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EMERSON: modbus card, PSU, controller, PSU, base, PSU, switch
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GE — Module, air switch, I/O module, display, CPU module, power module, converter, CPU board, Ethernet module, integrated protection device, power module, gas turbine card
Dark horse (HIMA) -DI module, processor module, AI card, pulse encoder
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NI – Information acquisition card, PXI module, card
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B&R 5AP1130.156C-000 | SCHUMACHER ATCS-15 1464-0320 | Lantronix 080-332-000-R |
ABB CI570 3BSE001440R1 | GE F650-N-F-L-F-2-G-1-HI-P-6E | SEW 8222215.14.17 |
EMERSON 1C31203G01 | GE URSHA | KEBA K2-400 DI470A |
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