Citation Hunt

Leaderboard

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Zilog Z80:

This text has been unreferenced on Wikipedia for a very long time. If you can't find a source, be bold and remove it!

"

The Z80 machine cycles are sequenced by an internal state machine which builds each M-cycle out of 3, 4, 5 or 6 T-states depending on context. This avoids cumbersome asynchronous logic and makes the control signals behave consistently at a wide range of clock frequencies. It also means that a higher frequency crystal must be used than without this subdivision of machine cycles (approximately 2–3 times higher). It does not imply tighter requirements on memory access times, since a high resolution clock allows more precise control of memory timings and so memory can be active in parallel with the CPU to a greater extent, allowing more efficient use of available memory bandwidth.[citation needed]