Econet Clock for Acorn 8-bit and 32-bit machines
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Eagle
EconetClock2
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README.md

README.md

Synopsis

EconetClock2 is the ATtiny45-20 firmware source code for the EconetClock2 project.

Motivation

This project creates an Acorn Econet clock suitable for use with Acorn computers from the 1980s and 90s. The Acorn Econet network is an EIA-422-B based network that is driven by a differential clock signal.

There are several designs for Econet clocks available on the Internet and even a few commercial providers of clocks, however most designs are based-on (or derived from) Acorn’s original design and require a complex, high-component count circuit in order to operate.

The clock created by this project consists of only 3 primary components (an ATtiny45-20 microcontroller, a capacitor and a resistor) and is therefore much easier to build.

Installation

Note: This is an AVR Studio 7 project that can be loaded and compiled by the IDE

Please see http://www.waitingforfriday.com/?p=19 for detailed documentation about EconetClock2

Author

EconetClock2 is written and maintained by Simon Inns.

License

EconetClock2 is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

EconetClock2 is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with EconetClock2. If not, see <http://www.gnu.org/licenses/>.