* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Monday, August 4, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Hank Hill returns to a changed world in new ‘King of the Hill’ episodes – New Haven Register

    Hank Hill Navigates a Bold New World in Thrilling New ‘King of the Hill’ Episodes

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

    Go-to entertainment: why gaming was made for the toilet – The Guardian

    Why Gaming Is the Ultimate Way to Pass Time in the Bathroom

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Sens. Blackburn, Warnock introduce CREATE Act to provide tax relief to music creators – Yahoo Home

    Sens. Blackburn and Warnock Launch CREATE Act to Deliver Tax Relief for Music Creators

    That’s (Political) Entertainment: When Theatre Meets Politics

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    How Tech Firms Like Google and Meta Are Embracing the Military – The New York Times

    How Tech Firms Like Google and Meta Are Embracing the Military – The New York Times

    Credo Technology: Wiring The AI Revolution (NASDAQ:CRDO) – Seeking Alpha

    Credo Technology: Driving the Next Wave of AI Innovation

    Microsoft Seeks to Extend Access to OpenAI Technology – PYMNTS.com

    Microsoft Aims to Broaden Access to OpenAI Technology

    Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

    Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

    Emory orthopaedic surgeons use robotic technology to transform knee replacement surgery – Emory News Center

    How Robotic Technology is Revolutionizing Knee Replacement Surgery

    Cognizant Technology Solutions Corp (CTSH) Q2 2025 Earnings Call Highlights: Strong Revenue … – Yahoo.co

    Cognizant Q2 2025 Earnings: Impressive Revenue Growth and Key Takeaways

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Hank Hill returns to a changed world in new ‘King of the Hill’ episodes – New Haven Register

    Hank Hill Navigates a Bold New World in Thrilling New ‘King of the Hill’ Episodes

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

    Go-to entertainment: why gaming was made for the toilet – The Guardian

    Why Gaming Is the Ultimate Way to Pass Time in the Bathroom

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Chicago Youth Symphony Orchestra takes the Lollapalooza stage – Yahoo Home

    Sens. Blackburn, Warnock introduce CREATE Act to provide tax relief to music creators – Yahoo Home

    Sens. Blackburn and Warnock Launch CREATE Act to Deliver Tax Relief for Music Creators

    That’s (Political) Entertainment: When Theatre Meets Politics

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    How Tech Firms Like Google and Meta Are Embracing the Military – The New York Times

    How Tech Firms Like Google and Meta Are Embracing the Military – The New York Times

    Credo Technology: Wiring The AI Revolution (NASDAQ:CRDO) – Seeking Alpha

    Credo Technology: Driving the Next Wave of AI Innovation

    Microsoft Seeks to Extend Access to OpenAI Technology – PYMNTS.com

    Microsoft Aims to Broaden Access to OpenAI Technology

    Livonia police use grappler technology to stop drunk driver – ClickOnDetroit | WDIV Local 4

    Livonia Police Deploy Grappler Technology to Safely Stop Drunk Driver

    Emory orthopaedic surgeons use robotic technology to transform knee replacement surgery – Emory News Center

    How Robotic Technology is Revolutionizing Knee Replacement Surgery

    Cognizant Technology Solutions Corp (CTSH) Q2 2025 Earnings Call Highlights: Strong Revenue … – Yahoo.co

    Cognizant Q2 2025 Earnings: Impressive Revenue Growth and Key Takeaways

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Technology

Zilog Z80 CPU – Modern, free and open source silicon clone

April 28, 2024
in Technology
Zilog Z80 CPU – Modern, free and open source silicon clone
Share on FacebookShare on Twitter

On April 15 of 2024 Zilog has announced End-of-Life for Z80, one of the most famous 8-bit CPUs of all time.

It is a time for open-source and hardware preservation community to step in with a Free and Open Source Silicon (FOSS) replacement for Zilog Z80.

The first fabrication of FOSS Z80 is scheduled for June of 2024!

On the path to become a silicon proven, pin compatible, open-source replacement for classic Zilog Z80.

FOSS Z80 leverages OpenROAD flow and FOSS 130 nm Skywater PDK to synthesize production ready silicon. Tiny Tapeout infrastructure is used to test and pool design with many others to reduce the cost of physical chip fabrication at Skywater Foundries.

The first iteration of FOSS Z80 silicon

The first iteration is developed with Tiny Tapeout 07 using 130 nm process and fits on a 0.064 mm2 die area. The first fabrication is scheduled for June of 2024 as a part of CI 2406 Shuttle.

The implementation is based around Guy Hutchison’s TV80 Verilog core.

Read documentation for Tiny Tapeout 07 version

Below is the image of GDSII integrated circuit layout for FOSS Z80. It is the result of automatic place-and-route flow in OpenROAD using 130 nm “gates” logic elements.

Add thorough instruction (including ‘illegal’) execution tests ZEXALL to testbench
Compare different implementations: Verilog core A-Z80, Netlist based Z80Explorer
Tapeout with ChipIgnite in QFN44 package
Tapeout with DIP40 package
Create gate-level layouts that would resemble the original Z80 layout, see the original chip dies below. Zilog designed Z80 by manually placing each transistor by hand.

,———.__,———.

–> CLK |6 35| A5 –>
D4 |7 34| A4 –>
D3 |8 33| A3 –>
D5 |9 32| A2 –>
D6 |10 31| A1 –>
VCC |11 30| A0 –>
D2 |12 29| GND
D7 |13 28| /RFSH –>
D0 |14 27| /M1 –>
D1 |15 26| /RESET /INT |16 25| /BUSRQ /NMI |17 24| /WAIT
>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Hacker News – https://github.com/rejunity/z80-open-silicon

Tags: moderntechnologyZilog
Previous Post

Jimmy Carter UFO Incident

Next Post

Columbia, SC Author Publishes Spiritual Self-Help Book

Team USA sets new relay record at swim worlds and Katie Ledecky wins again – CBS News

Team USA Shatters Relay Record at Swim Worlds as Katie Ledecky Dominates Once More

August 4, 2025
Dow futures reverse higher as recession alarm bells jolt Wall Street awake from dreams of a gravity-defying economy – Fortune

Dow Futures Soar Amid Growing Recession Concerns Shaking Wall Street Confidence

August 4, 2025
Hank Hill returns to a changed world in new ‘King of the Hill’ episodes – New Haven Register

Hank Hill Navigates a Bold New World in Thrilling New ‘King of the Hill’ Episodes

August 4, 2025
How Trump’s Immigration Policies Are Impacting Health Care – Pulmonology Advisor

How Trump’s Immigration Policies Are Shaping the Future of Health Care

August 4, 2025
Ghislaine Maxwell moved to federal prison camp in Texas – CNN

Ghislaine Maxwell Moved to Federal Prison Camp in Texas

August 4, 2025
How Tech Firms Like Google and Meta Are Embracing the Military – The New York Times

How Tech Firms Like Google and Meta Are Embracing the Military – The New York Times

August 4, 2025

Do You Really Need Electrolyte Drinks to Stay Hydrated? Here’s the Truth

August 4, 2025
New rule would expand tug escort requirements, reduce risk of oil spills in Puget Sound – Washington State Department of Ecology (.gov)

New Rule Strengthens Tug Escort Requirements to Drastically Reduce Oil Spill Risks in Puget Sound

August 4, 2025
100 years ago, scientists thought we’d be eating food made from air – Popular Science

A Century Ago, Scientists Predicted We’d Be Eating Food Made from Air

August 4, 2025
Maserati and Sparco Launch Lifestyle Capsule Inspired by Motorsport Heritage – stupidDOPE

Maserati and Sparco Launch Lifestyle Capsule Inspired by Motorsport Heritage – stupidDOPE

August 4, 2025

Categories

Archives

August 2025
MTWTFSS
 123
45678910
11121314151617
18192021222324
25262728293031
« Jul    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (753)
  • Economy (779)
  • Entertainment (21,656)
  • General (16,280)
  • Health (9,816)
  • Lifestyle (786)
  • News (22,149)
  • People (777)
  • Politics (788)
  • Science (15,991)
  • Sports (21,274)
  • Technology (15,756)
  • World (760)

Recent News

Team USA sets new relay record at swim worlds and Katie Ledecky wins again – CBS News

Team USA Shatters Relay Record at Swim Worlds as Katie Ledecky Dominates Once More

August 4, 2025
Dow futures reverse higher as recession alarm bells jolt Wall Street awake from dreams of a gravity-defying economy – Fortune

Dow Futures Soar Amid Growing Recession Concerns Shaking Wall Street Confidence

August 4, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version