Text: CD
Condition Symbol Comments 00 Always =1 U Unconditional branch 01 DR(15) Indirect address bit 10 Sign bit of AC 11 AC=0 z Zero value in AC
F1
Microoperation 000 None 100 AC=AC+DR 010 AC=0 011 AC=AC+1 100 AC=AC-DR 101 AR=AR-DR 110 AR=PC 111 M[AR]=DR
Symbol
F2
Microoperation Symbol 000 None NOP 100 AC=AC-DR SUB 010 AC=AC|DR OR 011 AC=AC&DR AND 100 DR=M[AR] READ 101 DR=AC ACTDR 110 DR=DR+1 INCDR 111 DR(0-10)=PC PCTDR
F3
Microoperation 000 None 001 AC=AC-DR 010 AC=AC 011 AC=AC<<AC 100 AC=AC>>AC 101 PC=PC+1 110 PC=PC+AR 111 Reserved
Symbol
NOP ADD CLRAC INCAC DRTAC DRTAR PCTAR WRITE
NOP XOR COM SHL SHR INCPC ARTPC
BR Symbol Function 00 JMP CARAD if condition =1 CAR=CAR+1 if condition = 0 01 CALL CARADSBRCAR+1 if condition=1 CAR=CAR+1 if condition = 0 10 RET CARSBR (Return from subroutine) 11 MAP CAR(25)=DR(1114), CAR(0,1,6)=0
Given the microcode (WRITE, INCDR, INCPC Z JMP NEXT) which is located at address (67)10. Find the binary representation for this microinstruction.
Address Microinstruction (binary format)