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.
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