Zilog Z8F0130 - Manual (Page 116)

eZ8
™
CPU Core
User Manual
UM012820-0810 BSWAP Instruction
101
Attributes
Escaped Mode Addressing
Using Escaped Mode Addressing, address mode R specifies a working
register. If the destination address is prefixed by
Eh ( 1110b ), a working
register is inferred. For example, if Working Register R12 ( Ch ) is the pre-
ferred destination operand, use ECh as the destination operand in the Op
Code. To access registers with addresses E0h to EFh , either set the Work-
ing Group Pointer, RP[7:4] , to Eh or use indirect addressing.
Sample Usage
If Register 27h contains the value 53h ( 01010011b ), the following state-
ment leaves the value CAh ( 11001010b ) in Register 27, sets the S flag,
and clears the V flag. The C flag is undefined.
BSWAP 27

Object Code: D5 27
Mnemonic Destination
Op
Code
(Hex)
Operand 1 Operand 2 Operand 3
BSWAP R1 D5 R1 — —