I want to monitor the read from CODE by AGSI with MOVC A,@A+DPTR , But I can't do it. I use the function below: Agsi.SetWatchOnMemory((amCODE<<24), (amCODE<<24)|0x1fff, MovcDeal, AGSIREAD); I use this function to monitor the read from CODE thar address is C:0x0000---C:0x1FFF.But the function only can monitor C:0x0000---C:0x00FF . I try the KEIL C51 V6.23 and V7.01,But all is failing. Can you help me ? Can you tell me how to do it,Thanks. Best regards. Nine Sky