Btst - Renesas R8C/Tiny Series Software Manual

Chapter 3 Functions

BTST

[ Syntax ]
BTST (:format)
[ Operation ]
______
Z src
C src
[ Function ]
• This instruction transfers the inverted value of
the C flag.
[ Selectable src ]
bit,R0 bit,R1
bit,A0 bit,A1
base:8[A0] base:8[A1]
base:16[A0] base:16[A1]
C bit,base:11[SB]
src
*1 This can only be selected when in S format.
[ Flag Change ]
Flag
U I O B
Change
Conditions
Z : The flag is set when
C : The flag is set when
[ Description Example ]
BTST flag
BTST 4,Ram:8[SB]
BTST 16,Ram:16[SB]
BTST [A0]
[ Related Instructions ]
Rev.2.00 Oct 17, 2005
REJ09B0001-0200
src
src
bit,R2 bit,R3
[A0] [A1]
bit,base:8[SB] bit,base:8[FB]
bit,base:16[SB] bit,base:16
*1
S Z D C
src
is 0; otherwise cleared.
src
is 1; otherwise cleared.
BCLR, BSET, BNOT, BNTST, BTSTC, BTSTS
page 58 of 263
Test bit
Bit TeST
[ Instruction Code/Number of Cycles ]
G , S (Can be specified)
src
to the Z flag and the non-inverted value of
3.2 Functions
BTST
Page: 158
src
to