Zilog Z16F2810 User Manual
Page 110
CPZ Instruction
UM018809-0611
94
ZNEO
®
CPU Core
User Manual
CPZ
Definition
Compare to Zero
Syntax
CPZ dst
Operation
dst
–
0
Description
The value zero is compared to (subtracted from) the destination operand and the flags are set
according to the results of the operation. The contents of the destination operand are unaffected.
Flags
Flags are set based on the memory destination size, or 32 bits for register destinations.
7
6
5
4
3
2
1
0
C
Z
S
V
B
CIRQE IRQE
*
*
*
*
1
–
–
–
Legend
C
= Set to 1 if the result generated a borrow; otherwise set to 0.
Z
= Set to 1 if the result is zero; otherwise, set to 0.
S
= Set to 1 if the result msb is 1; otherwise set to 0.
V
= Set to 1 if an arithmetic overflow occurs; otherwise set to 0.
B
= Set to 1.
CIRQE
= No change.
IRQE
= No change.
Note: