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Alastair Hewitt

Maker of Solid State Machines

Boston, MA
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9 Followers
4 Following
1 Projects
95 Likes
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This user joined on 03/04/2019.

22.1k
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Retrocomputer with serial and video built from late 70's TTL logic
Project Owner Contributor

Novasaur Retrocomputer

Alastair HewittAlastair Hewitt

22.5k
89
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Where DIY DIP/SSI/MSI CPU makers meet and discuss other TLA (three letters acronyms)
Project Owner Contributor

Hackaday TTLers

Yann Guidon / YGDESYann Guidon / YGDES

10.9k
70
49
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An easy to build homemade single board computer with a V20HL aka uPD70108H (8088 + 8080) or 80C88 CPU. CP/M-80 and CP/M-86 supported.
Project Owner Contributor

V20-MBC: a V20 (8088 + 8080) CPU homebrew computer

Just4FunJust4Fun

8.2k
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How many TTL ICs do you actually need to output a VGA image?
Project Owner Contributor

World's Simplest TTL VGA circuit?

George FootGeorge Foot

4.1k
56
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This projects tracks my efforts to develop discrete LED-Transistor logic building blocks and designing a CPU from them.
Project Owner Contributor

LCPU - A CPU in LED-Transistor-Logic (LTL)

TimTim

3.2k
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Suite-16 is a 16-bit cpu built entirely from TTL. It is a personal exploration of how hardware and software interact.
Project Owner Contributor

Suite-16

monsonitemonsonite

3.1k
23
5
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8-bit TTL technology processor
Project Owner Contributor

Nits Processor

CedCed

2.8k
18
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made only out of about 450 bipolar transistors (BC182)
Project Owner Contributor

Homebrew 4-bit transistorized CPU

GaborGabor

2k
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A re-creation of a Cosmic ELF computer, Coded in SpinalHDL
Project Owner Contributor

FPGA Cosmac ELF

Winston LoweWinston Lowe

1.2k
15
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Experimental project to break the 100MHz “sound barrier” on a TTL CPU
Project Owner Contributor

100MHz TTL 6502

DrassDrass

1.2k
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A 16-bit TTL CPU and stack machine built out of 7400-series chips.
Project Owner Contributor

TTL Operation Module (TOM-1)

Tim RyanTim Ryan

1k
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VT100 style terminal with a VGA output, built from 7400 chips
Project Owner Contributor

TTL Terminal

Dave UKDave UK

706
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16 bit VGA interface, 32K colors, graphic 640x480, sprites, sound, intended for Kobold K2 computer, no special video chips.
Project Owner Contributor

VGA video generation card

roelhroelh

654
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The DM-02 is an 8-bit computer built (almost) entirely out of 7400-series (TTL) logic chips.
Project Owner Contributor

DM-02 8-bit Computer

Ruud van FalierRuud van Falier

561
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Yetanother simple CPU of TTL chips.
Project Owner Contributor

The 74's called ... (SUBLEQ)

Michael MöllerMichael Möller

457
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Attempting to implement Forth on the Gigatron
Project Owner Contributor

Gigatron Forth

PeterPeter

452
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I decided to do a minor upgrade to My CP/M (Version 1). Swap RST6.5 for RST7.5 and increase the FRAM disk capacity from 32k to 256k.
Project Owner Contributor

My CP/M Version 1A

agp.cooperagp.cooper

416
8
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Homebuilt 8-bit CPU and GPU for fun entertainment system.
Project Owner Contributor

j8ger

LouisLouis

324
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Xark's Open Source Embedded Retro Adapter - Retro graphics display for rosco_m68k and similar retro computers
Project Owner Contributor

Xosera - FPGA-Based Retro Video Graphics

XarkXark

125
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A 1KB Shared Memory interface with interrupt for linking two RC2014 systems
Project Owner Contributor

RC2014 Shared Memory Interconnect

EtchedPixelsEtchedPixels

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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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