Question

In Mic-1, we know each microinstruction has 36 bits. Please help me define the 36 bits for the following microinstruction OPC = MAR = CPP OR H; wr; goto Main1 Assuming the micro-address of Main1 is 000000000 (binary), the above microinstruction is reads as the following: Logically AND the value in MDR and H registers, and save the result back to MDR and TOS registers; Initiate memory writing operation (to save the value in MDR back to memory pointed by MAR); jump to micro-address: 000000000

Answer 1

Solution: The given instruction is shown below: OPC = MAR= CPP OR H; wr ; goto Main! The value of instruction is shown below Next Address arm ALU C bus Mem B bus 0100 1100 101000010 100 1000 The 36 bits in order are 0000 0000 0 000 0100 1100 101000010 100 1000