MOV SP,#40H
MOV A,#20H
MOV B,#30H
PUSH A
PUSH B
POP B
POP A
(SP)=? (A)=? (B)=?
MOV SP,#40H
MOV A,#20H
MOV B,#30H
PUSH A
PUSH B
POP B
POP A
(SP)=? (A)=? (B)=?
MOV R0,#7EH
MOV DPTR.#10FEH
MOV 7EH,#0AAH
MOV 7FH.#0BBH
INC @R0
INC R0
INC @R0
INC DPTR
(7EH)=? (7FH)=? (R0)=? ((R0))=? (DPTR)=?
MOV R0,#00H
MOV A,#20H
MOV B,#0FFH
MOV 20H,#0F0H
XCH A,R0
XCH A, B
XCH A, @R0
(A)=? (B)=? (20H)=? (R0)=?