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Zilog Z80 Instruction Set - CPU Control Group

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Revision as of 21:08, 6 June 2026 by Inari (talk | contribs) (Created page with "The '''General-Purpose and CPU Control Group''' for the Zilog Z80 Instruction Set provides operations for controlling the CPU's state and miscellaneous instructions. == NOP == '''Operation''' — '''Op Code''' NOP {|class="wikitable" style="text-align:center" |- ! 7 || 6 || 5 || 4 || 3 || 2 || 1 || 0 || |- | 0 || 0 || 0 || 0 || 0 || 0 || 0 || 0 || 00 |} '''Operands''' None. '''Description''' The CPU performs no operation during the machine cycle. '''Con...")

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The General-Purpose and CPU Control Group for the Zilog Z80 Instruction Set provides operations for controlling the CPU's state and miscellaneous instructions.

NOP

Operation

—

Op Code

NOP

7	6	5	4	3	2	1	0
0	0	0	0	0	0	0	0	00

Operands

None.

Description

The CPU performs no operation during the machine cycle.

Condition Bits Affected

None.

M-Cyles	T-States	4 MHz E.T.
1	4	1.0

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