Z8FMC04100 ZILOG [Zilog, Inc.], Z8FMC04100 Datasheet - Page 303

• Manufacturer Part Number: Z8FMC04100
• Description: Z8 Encore-R Motor Control Flash MCUs
• Manufacturer: ZILOG [Zilog, Inc.]

PS024604-1005
Condition Codes
The C, Z, S, and V flags control the operation of the conditional jump (JP cc and JR cc)
instructions. Sixteen frequently-useful functions of the flag settings are encoded in a 4-bit
field called the condition code (cc), which forms Bits 7:4 of the conditional jump instruc-
tions. Table 156 summarizes the condition codes. Some binary condition codes can be cre-
ated using more than one assembly code mnemonic. The result of the flag test operation
decides whether the conditional jump is executed.
Table 156. Condition Codes
Binary
0000
0001
0010
0011
0100
0101
0110
0110
0111
0111
1000
1001
1010
1011
1100
1101
1110
1110
1111
1111
Hex
0
1
2
3
4
5
6
6
7
7
8
9
A
B
C
D
E
E
F
F
Assembly
Mnemonic
F
LT
LE
ULE
OV
Ml
Z
EQ
C
ULT
T (or blank)
GE
GT
UGT
NOV
PL
NZ
NE
NC
UGE
P R E L I M I N A R Y
Definition
Always False
Less Than
Less Than or Equal
Unsigned Less Than or Equal (C OR Z) = 1
Overflow
Minus
Zero
Equal
Carry
Unsigned Less Than
Always True
Greater Than or Equal
Greater Than
Unsigned Greater Than
No Overflow
Plus
Non-Zero
Not Equal
No Carry
Unsigned Greater Than or
Equal
Product Specification
Flag Test Operation
—
(S XOR V) = 1
(Z or (S XOR V)) = 1
V = 1
S = 1
Z = 1
Z = 1
C = 1
C = 1
—
(S XOR V) = 0
(Z OR (S XOR V)) = 0
(C = 0 AND Z = 0) = 1
V = 0
S = 0
Z = 0
Z = 0
C = 0
C = 0
eZ8 CPU Instruction Set
281