Programming the Instruction Decoder When the sequencing register is 00, we are in miro-instruction 00. 00 is the "fetch instruction" step. Note: "step = micro-instruction". When you are in step 00, the instruction has not yet been read from memory into the instruction register. Therefore, the instruction decode is set up so that if the sequence register is 00, a new instruction is loaded into the instruction register. The microprocessor is in the FETCH state. After this new instruction is loaded into the instruction register, the instruction decode will also set the sequencing register to 01. The microprocessor is in the EXCECUTE state and the 01 micro-instruction will be executed. If the instruction is done after step 01, the instruction decode will set the sequencing register to 00 again to begin the next instruction. If the instruction is not done after step 01 or has more micro-instructions, the instruction is usually a two-step instruction. Then, the sequencing register will be incremented to 02 to begin