File:Z80-M1.png|Opcode Fetch
File:Z80-M2-M3.png|Memory Read or Write
File:Z80-IO.png|Input or Output
File:Z80-interrupt.png|Interrupt Request
File:Z80-nmi.png|NMI Request
File:Z80-IO.png|Input or Output
File:Z80-bus.png|Bus Request
File:Z80-halt.png|HALT Exit