Propeller Manual

NOP – Assembly Language Reference
NOP
Instruction: No operation, just elapse four clock cycles.
NOP
Opcode Table:
–INSTR– ZCRI –CON– –DEST– –SRC– Z Result C Result Result Clocks
------ ---- 0000 --------- ---------
--- --- --- 4
Concise Truth Table:
(Not specified because
NOP performs no action.)
Explanation
NOP performs no operation but consumes 4 clock cycles. NOP has its –CON– field set to all
zeros, the
NEVER condition; effectively, every instruction with a NEVER condition is a NOP
instruction. Because of this, the
NOP instruction can never be preceded by a Condition, such as
IF_Z or IF_C_AND_Z, since it can never be conditionally executed.
Page 324 · Propeller Manual v1.1