MOV A, 30H ;(A) = 50HMOV R0, A ;(R0) = 50HMOV A, #0f6H ;(A) = F6HMOV @R0, A ;(50H)= F6HRR A ;(A) = EDHINC R0 ;(R0) = 51HMOV @R0, A ;(51H)= EDH(30H)=50H, (51H)=EDH, (A)=EDH, (R0)=51H.