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Alastair Hewitt

Maker of Solid State Machines

Boston, MA
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16 Followers
9 Following
2 Projects
138 Likes
alastair-hewitt
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This user joined on 03/04/2019.

35.7k
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Retrocomputer built from TTL logic running CP/M with no CPU or ALU
Project Owner Contributor

Novasaur CP/M TTL Retrocomputer

alastair-hewittAlastair Hewitt

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When you really need a computer with four RS232 serial ports.
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Resurrecting my BeBox

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Where DIY DIP/SSI/MSI CPU makers meet and discuss other TLA (three letters acronyms)
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Hackaday TTLers

yann-guidon-ygdesYann Guidon / YGDES

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Retro computer built from TTL, with 6502 and Z80 instruction set. Includes video, sound and filesystem. No microprocessor or FPGA.
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Isetta TTL computer

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Goal of the project is to develop and build a homebrew 16 bit relay computer
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Homebrew 16 bit relay computer

peterPeter

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A Microprocesser designed in a digital logic family based on the NE555
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555ENabled Microprocessor

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In this project, I built a very simple 4 bit RISC CPU. *Sponsored by PCBway
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The simplest 4-bit RISC CPU

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Building a retro-styled homebrew computer and operating system with modern microcontrollers.
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Homebrew Computer & OS from modern MCUs

shane-c-masonShane C Mason

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A retro-microcomputer in a micro-package. Learn from the ground up, just like the pioneers. Has monitor editor assembler BASIC FORTH LISP...
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1802 MemberChip Card

lee-hartLee Hart

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BASIC for the 8080 and Z80, fits in 1K of memory, runs BASIC games on a 2K system. Features similar to Palo Alto Tiny BASIC.
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One kilobyte Tiny BASIC for the 8080 and Z80

willstevenswill.stevens

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This is a 1-bit vacuum tube computer running at just +24V and -12V.
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1-Bit Vacuum Tube Computer

usagi-electric-davidUsagi Electric (David)

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

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Recreating boards for those old computers, and improve on them
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PDP-11/70 replica

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The Baffa-1 is an 8-bit CPU created from scratch using 74 series logic gates and built using custom printed circuit boards.
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Baffa-1 Homebrew CPU Minicomputer

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The MCL86 is a cycle accurate microsequencer-based FPGA core which can be used as a drop-in replacement for the Intel 8088 or 8086.
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MCL86 - Cycle Accurate Intel 8088 FPGA Core

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A Retrobrew TTL CPU - Classic yet Baroque
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ONAN 1111

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Vectron VGA Plus is a VGA graphics adapter that can interface with retro computers or microcontrollers.
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Vectron VGA Plus

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Experiment to create a minimal 4-bit CPU that can do something fun
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Tetra - 4-bit CPU

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8 Bit CPU implemented in 100x100µm² IC area for TinyTapeout
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Zinnia (MCPU5)

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Incorporates an improved minimal-chip One Instruction CPU with a hardware-driven VGA output
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One instruction VGA computer

justin-davisJustin Davis

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This is a proof-of-concept sub-project spun off from my main homebrew CPU project.
Project Owner Contributor

Pilot-1 CPU (ECM-16/TTL partial build)

pavelPavel

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roelh wrote 04/08/2023 at 18:10 • point

Hi Alastair,   thanks for liking and following the Isetta TTL computer !

  Are you sure? yes | no

Michael Gardi wrote 04/07/2021 at 02:58 • point

Thanks for your interest in my  2:5 Scale KENBAK-1 Personal Computer Reproduction project Alastair.

  Are you sure? yes | no

roelh wrote 11/22/2020 at 11:50 • point

Hi Alastair, thanks for liking and following VGA-Video card ! 

  Are you sure? yes | no

Xark wrote 09/06/2020 at 21:36 • point

Hello, thanks for the like & follow on my Xosera video project.  I am a fan and impressed by your Novasaur.  FPGAs are very cool, but kind of "cheating". :)  Xosera has a nice "base" video project setup, but been a bit delayed while I play with some rosco_m68k SPI coding.  That is working nicely and I plan on getting it "operational" via SPI interface "soon" (and then directly on the "bus").

  Are you sure? yes | no

Alastair Hewitt wrote 09/07/2020 at 12:20 • point

Thanks @Xark The Novasaur is mostly software now, so I've been looking at the next hardware project. I'm thinking a 65C02 computer with a video daughter board like the Commander X16. I'm not sure if/when the VERA board will be released, so your Xosera project is definitely of interest :)

  Are you sure? yes | no

Ken Yap wrote 06/05/2020 at 12:50 • point

Thanks for following #8085 SBC I must admit the design is not mine, and also I still have to debug my board.

  Are you sure? yes | no

Ken Yap wrote 03/31/2020 at 02:12 • point

Thanks for you interest in #Targeting SDCC to the 8080 

  Are you sure? yes | no

roelh wrote 09/16/2019 at 17:34 • point

Hello Alastair, thank you for following and liking the #Kobold K2 - RISC TTL Computer  !

  Are you sure? yes | no

Alastair Hewitt wrote 04/10/2019 at 00:14 • point

Hi @roelh Thanks for liking and commenting on my project. Looking forward to comparing notes!

  Are you sure? yes | no

roelh wrote 04/09/2019 at 20:22 • point

Hi Alastair, thank you for liking and following my new project, the Kobold computer, https://hackaday.io/project/164897-kobold-retro-ttl-computer !

  Are you sure? yes | no

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