ZiLOG Z8 PLUS User Manual page 127

Instruction Format:
WDT
Operation:
The Watch-Dog Timer (WDT) is a retriggerable one-shot timer that resets the device if it reaches its terminal
count. Each execution of the WDT instruction refreshes the timer and prevents the WDT from timing out.
Flags:
When the instruction is executed, the flags are set as follows:
C: The value set by the preceding instruction.
Z: The value set by the preceding instruction.
S: The value set by the preceding instruction.
V: The value set by the preceding instruction.
D: The value set by the preceding instruction.
H: The value set by the preceding instruction.
Example: The WDT is enabled. The following statement refreshes the Watch-Dog Timer.
WDT
Op Code:5F
OPC (Hex)
5F
OPC
.75
P Â
WDT
Watch-Dog Timer