TAR2 84000000
L DW#16#FFFFFF
AD
T#START_FB_ADRESS
L P##INOUT_DB_USER (DB203.DBB0) 85000020
+D
LAR1
L W[AR1,P#0.0]
T #DB_USER CB

L #START_FB_ADRESS
L P##INOUT_DB_RESERVED (DB200.DBB0) 85000050
+D
LAR1
L W[AR1,P#0.0] C8
T #DB_RESERVED
L D[LAR1,P#2.0]
AD DW#16#FFFFF8
T #DB_SERVED_OFFSET
希望指针高手,讲解一下这段程序,不胜感激.