APPENDIX B INSTRUCTION SET LIST
User’s Manual U13850EJ4V0UM
503
Table B-4. Symbols Used for Flag Operation
Symbol
Description
(blank)
Not affected
0
Cleared to 0
×
Set of cleared according to result
R
Previously saved value is restored
Table B-5. Condition Codes
Condition Name (cond)
Condition Code (cccc)
Conditional Expression
Description
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 or 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 than 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 MPD703030A
Страница 2: ...User s Manual U13850EJ4V0UM 2 MEMO ...
Страница 514: ...User s Manual U13850EJ4V0UM 514 MEMO ...