APPENDIX C INSTRUCTION SET LIST
677
User’s Manual U15195EJ5V0UD
(5) Symbols used in flag operations
Symbol Explanation
(Blank) No
change
0
Clear to 0.
×
Set or cleared according to result.
R
Previously saved value is restored.
(6) Condition codes
Condition Name
(cond)
Condition Code
(CCCC)
Condition Expression
Explanation
V
0000
OV = 1
Overflow
NV
1000
OV = 0
No overflow
C/L
0001
CY = 1
Carry
Lower (Less than)
NC/NL
1001
CY = 0
No carry
No lower (Greater than or
equal)
Z/E
0010
Z = 1
Zero
Equal
NZ/NE
1010
Z = 0
Not zero
Not equal
NH
0011
(CY or Z) = 1
Not higher (Less than equal)
H
1011
(CY or Z) = 0
Higher (Greater than)
N
0100
S = 1
Negative
P
1100
S = 0
Positive
T 0101
−
Always (Unconditional)
SA
1101
SAT = 1
Saturated
LT
0110
(S xor OV) = 1
Less then signed
GE
1110
(S xor OV) = 0
Greater than or equal signed
LE
0111
((S xor OV) or Z) = 1
Less than or equal signed
GT
1111
((S xor OV) or Z) = 0
Greater than signed
Содержание PD703114
Страница 2: ...2 User s Manual U15195EJ5V0UD MEMO ...