Infineon Technologies C166S V2 User Manual page 306

SRVWDT
Group
Syntax
Source Operand(s)
Destination Operand(s)
Operation
Service Watchdog Timer
Description
This instruction reloads the high order byte of the Watchdog Timer with a preset value
and clears the low byte. After this instruction has been executed and if the WDTCTL bit
of the CPUCON1 register is cleared, the Watchdog Timer cannot be disabled
regardless of the execution of SRVWDT. If the WDTCTL bit is set, the Watchdog Timer
can still be disabled. To ensure that this instruction is not accidentally executed, it is
implemented as a protected instruction.
CPU Flags
E Not affected.
Z Not affected.
V Not affected.
C Not affected.
N Not affected.
Encoding
Mnemonic
SRVWDT
User Manual
Service Watchdog Timer
System Control Instructions
SRVWDT
none
none
E Z
- -
Detailed Instruction Description
V C
- -
Format
A7 58 A7 A7
8-306
User Manual
C166S V2
SRVWDT
N
-
Bytes
4
V 1.7, 2001-01