Zilog Z8F0130 User Manual
Page 181

eZ8
™
CPU Core
User Manual
UM012820-0810
LD Instruction
166
Escaped Mode Addressing
Using Escaped Mode Addressing, address modes R or IR can specify a
working register. If the high nibble of the source or destination address is
Eh
(
1110b
), a working register is inferred. For example, if Working Reg-
ister R12 (
Ch
) is the preferred destination operand, use
ECh
as the destina-
tion operand in the Op Code. To access registers with addresses
E0h
to
EFh
, either set the Working Group Pointer,
RP[7:4]
, to
Eh
or use indirect
addressing.
Sample Usage
The following statement loads the value
34h
into Working Register R15.
LD R15, #34h
Object Code: FC 34
If Register
34h
contains the value
FCh
, the following statement loads the
value
FCh
into Working Register R14.
LD R14, 34h
Object Code: E4 34 EE
The contents of Register
34h
are not affected.
If Working Register R14 contains the value
45h
, the following statement
loads the value
45h
into Register
34h
:
LD 34h, R14
Object Code: E4 EE 34
The contents of Working Register R14 are not affected.
If Working Register R12 contains the value
34h
, and Register
34h
con-
tains the value
FFh
, the following statement loads the value
FFh
into
Working Register R13:
LD R13, @R12
Object Code: E3 DC
The contents of Working Register R12 and Register R34 are not affected.
- Z8F0131 Z8F0230 Z8F0231 Z8F0430 Z8F0431 Z8F043A Z8F0830 Z8F0831 Z8F083A Z8F1232 Z8F1233 Z8F0113 Z8F011A Z8F0123 Z8F012A Z8F0213 Z8F021A Z8F0223 Z8F022A Z8F0411 Z8F0412 Z8F0413 Z8F041A Z8F0421 Z8F0422 Z8F0423 Z8F042A Z8F0811 Z8F0812 Z8F0813 Z8F081A Z8F0821 Z8F0822 Z8F0823 Z8F082A Z8F0880 Z8F1621 Z8F1622 Z8F1680 Z8F1681 Z8F1682 Z8F2421 Z8F2422 Z8F2480 Z8F3221 Z8F3222 Z8F3281 Z8F3282 Z8F4821 Z8F4822 Z8F4823 Z8F6081 Z8F6082 Z8F6421 Z8F6422 Z8F6423 Z8F6481 Z8F6482 Z8FS021A ZMOT1AHH Z8FS040B ZMOT0BHH ZMOT0BSB Z8FMC04 Z8FMC08 Z8FMC16