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256byteram

Digital and analogue electronics tinkerer

Adelaide, Australia
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6 Projects
256byteram
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This user joined on 02/06/2014.

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A small Z80 computer with composite video, serial and a hard drive with CP/M
Project Owner Contributor

Z80 Microcomputer System

256byteram256byteram

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A high resolution Component, RGB or SCART adapter for MSX and Colecovision.
Project Owner Contributor

TMS9929A RGB and Component adapter

256byteram256byteram

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Moog Modular style Synthesizer using Vacuum Tubes (and diodes)
Project Owner Contributor

Tube Synth

256byteram256byteram

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'Pong' made with Vacuum Tubes
Project Owner Contributor

Tube Television Tennis

256byteram256byteram

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Moog style all-tube filter
Project Owner Contributor

Vacuum Tube Synth Filter

256byteram256byteram

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A simple way to make a transformer for a vacuum tube project
Project Owner Contributor

Quick and Nasty Tube Power Supply

256byteram256byteram

Things I've Built

Homebrew 16-bit CPU

This is a simple CPU I made using a ROM to perform addition and hold the state machine. It works on 4-bits at a time to give a 16-bit accumulator.

32-bit TTL CPU

This machine I made as an experiment in Stack Machine architectures. The system is 32-bit clean.

Apple //c colour demodulator

I wanted full colour on my Apple //c so I put together a small board which converts the output on 15-pin connector to component video. The colour quality was very clear.

Intel 8080 Computer

I started this shortly after I left school. There's a whole lot more at http://kaput.retroarchive.org/

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Spartan 6 FPGA Shield includes SPI Configuration Flash, Breakout Headers, SRAM, programmable from Arduino or SPI Programmer
Project Owner Contributor

Arduino-Compatible FPGA Shield

technolomaniactechnolomaniac

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My attempt at making an FPGA experimenters board in a popular form factor :)
Project Owner Contributor

'Flea Ohm' FPGA Project

valentin-angelovskiValentin Angelovski

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A mobile phone with rotary dial
Project Owner Contributor

Rotary dial mobile phone

jaromirsukubajaromir.sukuba

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Project Owner Contributor

'FleaFPGA Uno' Starter board

valentin-angelovskiValentin Angelovski

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A modern retro system, compatible with the C64, C128 and MSX2+.
Project Owner Contributor

Tomodachi X2

maya-poschMaya Posch

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A compact IBM-PC compatible development board based on an Intel 80386SX CPU and an Altera Cyclone IV FPGA.
Project Owner Contributor

LSE-PC

pierre-surplyPierre Surply

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pdsilva wrote 09/13/2016 at 14:24 • point

thank you for your time and generosity in sharing these marvelous projects, I ever wished to learn how to generate color, I already did a character terminal but in black and white, I searched for your  avr color generator code, Is it available for all?

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jaromir.sukuba wrote 03/29/2014 at 11:58 • point
Very interesting profile. Are the details of your 16 and 32-bit CPU available somewhere on the web?

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256byteram wrote 03/30/2014 at 13:49 • point
I'm terrible at keeping documentation. I've got a work directory zipped which you're welcome to look at. No schematics. I might find those later. http://kaput.homeunix.org/~thrashbarg/Stack_Machine.zip

  Are you sure? yes | no

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