S3C84E5/C84E9/P84E9 INSTRUCTION SET
6-61
NOP No Operation
NOP
Operation: No action is performed when the CPU executes this instruction. Typically, one or more NOPs are
executed in sequence in order to affect a timing delay of variable duration.
Flags: No flags are affected.
Format:
Bytes Cycles Opcode
(Hex)
opc 1 4 FF
Example: When the instruction NOP is executed in a program, no operation occurs. Instead, there happens
a delay in instruction execution time which is of approximately one machine cycle per each NOP
instruction encountered.