TABLE 7-2 Symbolic Microprogram (Partial) Label Microoperations CD BR AD ORG O ADD: NOP I CALL INDRCT READ JMP NEXT ADD U JMP FETCH ORG 4 BRANCH: NOP S JMP OVER NOP NOP FETCH INDRCT U JMP OVER: I CALL...

7-16.
Add the following instructions to the computer of Sec 7-3 (EA is the effective address). Write the symbolic microprogram for each routine as in Table 7-2. (Note that AC must not change in value unless the instruction specifies a change in AC.)

Symbol	Opcode	Symbolic Function	Description
AND	0100	AC ← AC ∧ M[EA]	AND
SUB	0101	AC ← AC - M[EA]	Subtract
ADM	0110	M[EA] ← M[EA] + AC	Add to memory

Extracted text: TABLE 7-2 Symbolic Microprogram (Partial) Label Microoperations CD BR AD ORG O ADD: NOP I CALL INDRCT READ JMP NEXT ADD U JMP FETCH ORG 4 BRANCH: NOP S JMP OVER NOP NOP FETCH INDRCT U JMP OVER: I CALL ARTPC U JMP FETCH ORG 8 NOP АCTDR STORE: I CALL INDRCT U JMP NEXT WRITE JMP FETCH ORG 12 NOP READ EXCHANGE: I CALL INDRCT JMP NEXT ACTDR, DRTAC WRITE JMP NEXT U JMP FETCH ORG 64 FETCH: РСТAR JMP JMP NEXT READ, INCPC NEXT DRTAR U МАР JMP RET INDRCT: READ U NEXT DRTAR U