Renesas R8C/Tiny Series Software Manual page 50

Chapter 2 Addressing Modes
FB relative
The bit that is the number of bits
bit,base:8[FB]
indicated by bit away from bit 0 at the
address indicated by the frame base
register (FB) plus the value indicated by
base (added including the sign bit) is the
object of the operation.
However, if the address of the bit that is
the object of the operation is outside the
range 00000
above are ignored and the address
returns to 00000
The address range that can be specified
by bit, base:8 extends 16 bytes toward
lower addresses or 15 bytes toward
higher addresses from the frame base
register (FB) value.
FLG direct
The specified flag is the object of
U
the operation.
I
O
This addressing mode can be
used with the FCLR and FSET
B
instructions.
S
Z
D
C
Rev.2.00 Oct 17, 2005
REJ09B0001-0200
to 0FFFF , bits 17 and
16 16
or 0FFFF
16 16
page 32 of 263
If the base value is negative
Register
FB
address
.
If the base value is positive
b7
FLG U
2.5 Bit Instruction Addressing
Memory
(Bit position)
base
address
base
Bit position
Register
b0
I O B S Z D C