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Leon

Electrical & computer engineer who loves old computers

Athens Greece

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This user joined on 10/31/2018.

My Projects

A 16-bit (and a 32bit) FPGA CPU I call Lion CPU and a computer, the Lion computer. Everything built from scratch.

Lion FPGA CPU/Computer

Qubide with 512K ram leaves a small amount of free ram to QL so this is a version with more ram and an expansion connector

QUBIDE clone with 640K or 704K ram upgrade for QL

It is a 1MByte flash cartridge, it supports standard 8K and 16K carts.

Multi-Cart for 8-bit Atari computers

A friend asked me to see why a video circuit for the pal version apple IIc didn't work, I designed a new video adapter for him.

Video adapter for PAL Apple IIc

Having burned two ZX8301 chips in the last years was a motive to make a cpld based replacement for the QL ZX8301 ULA.

ZX8301 replacement for Sinclair QL

Projects I Contribute To

A Windows Emulator for the Lion FPGA CPU/Computer.

LionWin

My Lists

Retro Computer Projects

Projects related to retro computers, cards, accelerators, upgrades, cartridges, emulators, clones

Curated by Leon

Projects I Like & Follow

The 2018 Hackaday Prize

The Automatic Infinite 3D Printer (i3D) gives anyone the power of a factory.

Automatic Infinite 3D Printer

swaleh-owais Swaleh Owais

Game engine using a virtual machine with a simulator and a web compiler

Esp little game engine

Hackaday Prize 2019

University digital Logic Learning Xtensible board release 3 with SDRAM

ULX3S powerful ECP5 board for open source FPGA

radionaorg radiona.org

The 2017 Hackaday Prize

Low cost IDE/PATA disk emulator using a RPi Zero that also brings wireless networking to vintage computers.

NetPi-IDE

Recreation of the 'Fastest computer in the Universe' that runs FORTH.

Recreating the Jupiter Ace

cees-meijer Cees Meijer

I am building a computer featuring a 16-bit RISC CPU made of discrete transistors for learning, fun and art. It will be pretty large.

The Spikeputor

Writing on a whiteboard with stepper motors

Scribing Robot

Retro challenge 2017/04 project to create a TMS9900 compatible CPU core. Again in a month... Failure could be an option...

TMS9900 compatible CPU core in VHDL

erik-piehl Erik Piehl

The memory systems of Altera Cyclone5 FPGAs have various features and limitations. I will not talk about the HPS here, only the FPGA.

Memory on Cyclone5 FPGA

bruce-land Bruce Land

68000 Retro Super Computer

Merlin

matthew-pearce Matthew Pearce

Cortex M0+, open source retro-gaming console, which connects to VGA and uses USB Gamepads/Keyboards.

uChip Simple VGA Console

nicola-wrachien Nicola Wrachien

A microcode compiler developed to fit into FPGA toolchain and validated to develop CDP1805-like CPU and text-based video controller

Microcoding for FPGAs

16-bit computer system featuring a custom-designed CPU

LEO-1 Homebrew CPU

john-croudy John Croudy

Digital Information Processor - an 8-bit computer made out of 7400 series logic and some EEPROMs.

DIP-8 TTL Computer

I made a mouse droid companion for my R2-D2. Unlike its Death Star brethren that are all black, mine is a rusty one from Tatooine.

Star Wars Mouse Droid (Tatooine Edition)

Homebrew Retro-Inspired 32-bit CPU And Video Game System

Project Ember

A Windows Emulator for the Lion FPGA CPU/Computer.

LionWin

I'm not going to give up this time, I promise!

W-32 Z80 computer

buzz-pendarvis Buzz Pendarvis

View all

Bits

Dusan Petrovic wrote 03/25/2019 at 12:30

Hello Leon! Thank you for following my #Homebrew CPU list.

Are you sure? yes | no