z8fmc16100 ZiLOG Semiconductor, z8fmc16100 Datasheet - Page 289

• Manufacturer Part Number: z8fmc16100
• Description: Z8 Encore Motor Control Flash Mcus
• Manufacturer: ZiLOG Semiconductor

PS024611-0408
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
instructions.
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
Table 156
Hex
A
B
C
D
E
E
F
0
1
2
3
4
5
6
6
7
7
8
9
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
lists the condition codes. Some binary condition codes are created
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
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