If you want to complete the following data transmission, how to use MCS-5 1 single chip instructions to achieve it?

The content of (1)R 1 is transferred to R0.

MOV A，R 1

MOV R0，A

(2) The contents of the external RAM 0020H unit are sent to R0.

MOV DPTR，#0020H

MOVX A，@DPTR

MOV R0，A

(3) The contents of the external RAM 1000H unit are sent to the internal RAM20H unit.

MOV DPTR，# 1000H

MOV R0，#20H

MOVX A，@DPTR

MOV @R0，A

(4) The contents of the external RAM 1000H unit are sent to the internal RAM 20H unit.

Same as (3)

(5) The contents of the external ROM 2000H unit are sent to R0.

MOV DPTR，#2000H

MOVC·A·DPTR

MOV R0，A

(6) The contents of the external ROM 2000H unit are sent to the internal RAM 20H unit.

MOV DPTR，#2000H

MOV R0，#20H

MOVC·A·DPTR

MOV @R0，A

(7) The contents of the external ROM 2000H unit are sent to the external RAM 0020H unit.

MOV DPTR，#2000H

MOV R0，#20H

MOVC·A·DPTR

MOVX @R0，A