Zilog Z8F0130 - Manual (Page 199)

eZ8
™
CPU Core
User Manual
UM012820-0810 LDX Instruction
184
If Working Register R1 contains the value B3h , and Register 702h con-
tains the value 46h , the following statement loads the value 46h into Reg-
ister B3h :
LDX @R1, 702h
Object Code: 85 17 02
The contents of Working Register R1 and Register 702h are not affected.
If Register Pair ( 22h, 23h ) contains the value 0655h , and Register
0655h contains the value 1Ch , the following statement loads the value
1Ch into Register 96h :
LDX 96h, @22h
Object Code: 86 22 96
The contents of Register Pair ( 22h, 23h ) and Register 0655h are not
affected.
If Register 20h contains the value 28h , and Register Pair ( F2h, F3h )
contains the value 0167h , and Register 0167h contains the value 9Bh ,
the following statement loads the value 9Bh into Register 28h :
LDX @20h, @.ER(F2h)
Object Code: 87 F2 20
The contents of Register 20h , Register Pair ( F2h, F3h ), and Register
0167h are not affected.
The .ER notation is used in this case to resolve the ambiguity that
would otherwise be present as to which operand ( 20h or F2h ) is to be
treated as a Register Pair.
If Working Register Pair RR10 contains the value 0529h , and Register
0530h ( 0529h + 07h = 0530h ) contains the value C1h , the following
statement loads the value C1h into Working Register R1:
LDX R1, 7(RR10)
Object Code: 88 1A 07
Note: