Arm and leg gitbox mod12/28/2022 ![]() ![]() The data is fetched from Instruction Memory in Little Endian Byte Order. That is,ĬPU_Instruction = Instruction_Memory 4 registers of 8 bits of information each from the Instruction Memory are read in little endian byte order and form the first 32 bits of the CPU instruction. #Arm and leg gitbox mod 32 bitThe Program Counter or PC goes through the Instruction Memory and fetches a 32 bit instruction in each cycle. #Arm and leg gitbox mod 64 bitsIf the result needs to be loaded from the data memory, it can be written back to the Register module to perform any further operations.Ī CPU instruction is 64 bits wide. Depending on the type of operation performed, the result may need to be loaded from or stored to the data memory. The Registers pass the values in instruction memory to the ALU to perform operations. The Program Counter or PC reads the instructions from the instruction memory, then modifies the Register module to hold the current instruction. The CPU comprises of a Program Counter, Instruction Memory, Register module, Arithmetic Logic Unit and Data Memory. Let's start with an abstract view of the CPU.
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