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Alastair Hewitt

80's tech nostalgic

Boston, MA

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This user joined on 03/04/2019.

My Projects

Hackaday Prize 2019

Retrocomputer with serial and video built from late 70's TTL logic

Novasaur Retrocomputer

Alastair Hewitt

Projects I Contribute To

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

Hackaday TTLers

Yann Guidon / YGDES

Projects I Like & Follow

A 16 bit RISC computer with video display, from just a few TTL and memory chips. Online C compiler and simulator available.

Kobold K2 - RISC TTL Computer

Hackaday Prize 2019

A 16 bit computer with 20 address bits and video display, from just a few TTL and memory chips. Instructions resemble 68000 / PDP-11.

Kobold - retro TTL computer

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.

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

Add a second brain to your Arduino Mega

RetroShield for Arduino Mega

A Z80 homebrew computer with 32KB SRAM & 32KB ROM, TMS9918A VDP (video) and AY-3-8910 PSG (audio)

LM80C Color Computer

Leonardo Miliani

This projects tracks my efforts to develop discrete LED-Transistor logic building blocks and designing a CPU from them.

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

This is an 8-bit CPU built using only 17 TTL chips. 32K ROM, 32K data, UART, microcoded.

CSCvon8: An 8-bit TTL CPU

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

Suite-16

A re-creation of a Cosmic ELF computer, Coded in SpinalHDL

FPGA Cosmac ELF

A Series of Experiment to Create an ISA 8-Bit Video Card

ISA 8-Bit Video Experiments

A simple computer based on the CP/M OS and flash chips for disk drives

My CP/M Single Board Computer

Writing a code generator for the 8080 microprocessor for Small Device C Compiler (SDCC)

Targeting SDCC to the 8080

Ken Yap Ken Yap

VT100 style terminal with a VGA output, built from 7400 chips

TTL Terminal

A 1960s-style mini (decreasingly) reminiscent of the PDP-8 scratch-built out of 74xxx logic, including software.

CFT 16-bit Mini-Computer

A 16-bit TTL CPU and stack machine built out of 74xx chips.

TTL Operation Module (TOM-1)

Attempting to implement Forth on the Gigatron

Gigatron Forth

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

DM-02 8-bit Computer

Ruud van Falier

A 1KB Shared Memory interface with interrupt for linking two RC2014 systems

RC2014 Shared Memory Interconnect

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Bits

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

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

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

Thanks for you interest in #Targeting SDCC to the 8080

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roelh wrote 09/16/2019 at 17:34

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

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

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

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roelh wrote 04/09/2019 at 20:22

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

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