What is the difference between a microoperation, microinstruction and . . . I've seen a few lectures interchangeably use the two words (microinstruction and microoperation) I've found a source that explains the difference between a microoperation and microinstruction, but I have not been able to associate the two to a control word Books I have referred to have provided definitions of each, but no explanation about
architecture - Instructions in ISA and microinstructions? - Software . . . Something like a register increment instruction, though, could break down into multiple microinstructions, e g "move the contents of register A0 to the ALU input register (a microinstruction), run the ALU increment logic (another one), and move the ALU output to A0 (a third microinstruction) "
computer organization : finding control word length A microprogram control unit is required to generate a total of 35 control signals Assume that during any microinstruction, at most 2 control signals are active The minimum number of bits required in the control word to generate the required control signal will be a 2 b 6 c 7 d 8 ? Please explain how to calculate this?
What do JAMZ, JAMN, and JMPC stand for in Mic-1? 12 bits control the selection of the next microinstruction: Addr (9 bits) - the address of the next micro-instruction; JAM (3 bits) - these bits determine how the next micro-instruction is chosen; JAM bits are complicated JMPC = use the PC address; JAMN = if N is true (negative result in ALU), then add 1 to high-order bit of Addr
What is the difference between clock cycle and clock period? And when we talk in terms of cpu architecture (like pipelining concepts), we use the term clock cycles to denote the time taken to complete 1 instruction(or 1 microinstruction) It kind of provides a layer of abstraction from the working of the clock(If lets say you change the clock, its clock period might change, but still in cpu terms we
Can x86 Instruction Set be changed with microcode update? x86 CPUs (Intel, AMD) use a large amount of microcode, a part of this microcode can be downloaded in RAM and can be updated, principally for fixing bugs (and maybe for more hidden purposes such as disabling some parts of the CPU depending on the part number)
What is the exact difference between a latch a flipflop? From what I have understood : A Flip Flop is a clocked latch i e flip flop = latch + clock Latch continuously checks for inputs amp; changes the output whenever there is a change in input Flip Flop