115
3.2 Functions
Chapter 3 Functions
SuBtract then Jump on Not Zero
Subtract & conditional jump
[ Selectable src/dest/label ]
[ Related Instructions ]
ADJNZ
[ Function ]
SBJNZ
SBJNZ
[ Syntax ]
SBJNZ.size src,dest,label
• This instruction subtracts
src
from
dest
and stores the result in
dest
.
• If the operation resulted in any value other than 0, control jumps to label. If the operation resulted in
0, the next instruction is executed.
• The op-code of this instruction is the same as that of ADJNZ.
src
dest
label
R0L/R0
R0H/R1
R1L/R2
R1H/R3
A0/
A0
A1/
A1
PC
*2
–126 < label < PC
*2
+129
#IMM
*1
[A0]
[A1]
dsp:8[A0]
dsp:8[A1]
dsp:8[SB]
dsp:8[FB]
dsp:16[A0] dsp:16[A1] dsp:16[SB]
abs16
*1 The range of values that can be taken on is –7 < #IMM < +8.
*2 The PC indicates the start address of the instruction.
[ Flag Change ]
[ Description Example ]
SBJNZ.W
#1,R0,label
B , W
[ Operation ]
dest dest – src
if dest
≠
0 then jump label
Flag
Change
U
I
O
B
S
Z
D
C
[ Instruction Code/Number of Cycles ]
Page=224
Содержание R8C/Tiny Series
Страница 50: ...Chapter 3 Functions 3 1 Guide to This Chapter 3 2 Functions...
Страница 151: ...134 Chapter 3 Functions 3 2 Functions Blank for page layout...
Страница 152: ...Chapter 4 Instruction Code Number of Cycles 4 1 Guide to This Chapter 4 2 Instruction Code Number of Cycles...
Страница 278: ...Chapter 6 Calculation Number of Cycles 6 1 Instruction queue buffer...
Страница 287: ...Glossary 1 Glossary Technical terms used in this software manual are explained below They are good in this manual only...
Страница 291: ...Symbol 1 Table of symbols Symbols used in this software manual are explained below They are good in this manual only...
Страница 295: ...REVISION HISTORY R8C Tiny Series SOFTWARE MANUAL Rev Date Description Page Summary B 1 1 00 Jun 19 03 First Edition...
Страница 297: ...R8C Tiny Series Software Manual 2 6 2 Ote machi Chiyoda ku Tokyo 100 0004 Japan...