© Copyright 2021 Crownhill Associates Limited - All Rights Reserved


Trade Marks of Crownhill Associates Limited
Proton Development Suite™
Proton Basic™
Proton Plus™
L.E.T BASIC™


Proton Basic Web Site and Forum

The Crownhill website protonbasic.co.uk and the associated forum are currently off line.
No files or user data have been lost or deleted.

For educational purposes and to make derivative works legitimate, by way of this web site we are making available the source code and binaries of some obsolete products. To include Crownhill BASIC Compilers and associated hardware. 

Crownhill Proton Development Boards are now open Source, Design files and supporting documents are available here
Crownhill Proton Development Suite , file repository containing various obsolete versions of the Products are available here
A Users file repository - containing various files, code examples and documents uploaded by users, catalogued into folders here

The source code for Crownhill L.E.T BASIC and Crownhill Proton BASIC is available under a non restrictive Open Source License, upon request.


New or Replacement USB license keys for Crownhill Proton BASIC are available from Crownhill Associates Limited

Very Brief History - Proton Basic™

Proton Development Suite™ is a derivative work of Proton Basic™ and Proton Plus™, which are derivative works of the original Crownhill Product L.E.T BASIC™ 

Les Johnson was employed by Crownhill Associates, part of his remit was to develop and support L.E.T PIC Basic Compiler. Les Johnson was given access to the source code and background of L.E.T PIC BASIC Compiler along with knowledge of the License enforcement systems employed by Crownhill.

The Name L.E.T PIC BASIC was dropped at the request of Microhips lawyers because of trade mark infringement with the registered trademark  PIC® 

L.E.T BASIC had limitations, which were overcome by a rewrite of the compiler. Les Johnson undertook this task and Crownhill Proton BASIC was developed. Les Johnson was the sole developer of the new Crownhill Product which was marketed as Proton Basic™ & Proton Plus™.  Proton Basic™ being a feature limited version of Proton Plus™.

Proton Basic™ & Proton Plus™ carry the Crownhill Copyright Notice, which was compiled into the product by Les Johnson , appearing during installation and in the 'About Box'

Crownhills, Proton Basic™ & Proton Plus™ utilised an editor which lacked many features that were present in the Editor / IDE produced by  the Company, Mecanique.
Mecanique entered into a commercial agreement with Crownhill, Mecanique produced a Editor / IDE for the Crownhill Proton Basic™ & Proton Plus™ compilers, it was designated ProtonIDE.

Crownhill negotiated with the Company Labcenter to allow a version of the Labcenter Proteus product to be bundled with Crownhills, Proton Basic™ & Proton Plus™

For marketing purposes, Crownhills, Proton Basic™ & Proton Plus™ names were dropped in favour of  Proton Development Suite™  which incorporated a limited version of Labcenters Proteus Product , the Mecanique proton IDE and Crownhills, Proton Basic™ Compiler. Les Johnson remained the sole developer of the Crownhills Proton Basic™ Compiler.

In recognition of his work on the Crownhill Proton Basic™ Compiler. Crownhill entered into a profit sharing agreement with Les Johnson, related to sales of the compiler.

After an illness Les Johnson chose to leave the employ of Crownhill and has since developed  versions of the Crownhills Proton Basic™ Compiler with Crownhills consent. Versions of the Proton Basic™ Compiler were released by Les Johnson, via the Crownhill website protonbasic.co.uk, these versions continued to carry the Crownhill Copyright Notice for some years.

In view of the fact that Les Johnson was onward developing the Proton Basic™ Compiler. In view of the dedication that Les Johnson had given to the development of the product. Crownhill made an offer to him, to take the whole of the compiler and associated products, domain names and the support forum,  free of any charge and develop them as his own, commercialising them as he wished.

Crownhill did not receive a positive response from Les Johnson.

Crownhill then posted the offer on the public proptonbasic.co.uk. There was still no positive response from Les Johnson.

The public offer to Les Johnson, was removed - deleted - by a forum moderator whose registered name on the forum is John Drew.  When asked why this action was taken, 'John Drew' advised that "Les Johnson had asked him to delete the message". User John Drew was removed as forum moderator.

Around this time, Les Johnson ceased direct contact with Crownhill.

Current Position Proton Basic™


Recently end 2020 - early 2021, Les Johnson announced via the Crownhill website protonbasic.co.uk, he would no longer compile versions of the Proton Basic™ Compiler supporting Crownhill license enforcement system. 

It is now nearing 5 years since Les Johnson left employment with Crownhill, over that time the Crownhills Proton Basic™ Compiler was developed by Les Johnson to include new functionality and in doing so, lost some functionality.  The product is no longer the product that it was in 2016 when Les Johnson was last employed by Crownhill. Todays - Feb 2021 - product is a 'derivative work' a newer and different product.

This derivative work, could be considered an enhanced version of Crownhills Proton Basic™ Compiler, a feature rich product with a future and life of its own. Certainly the 2021 version of the compiler is a product of Les Johnson making and without control or influence from Crownhill and without backward compatibility to the originating product.

For educational purposes and to make derivative works legitimate, by way of this web site we are making available the source code and binaries of some obsolete products. To include Crownhill BASIC Compilers and associated hardware. 

Under the license below, Les Johnson is free to continue to work on the product he developed for Crownhill he may sell, give away or do as he wishes.

Existing users of Crownhills Proton Basic™ Compiler will be able to obtain from Crownhill License keys for the most recent version of Crownhills Proton Basic™ Compiler.

- For the purpose of clarity, trade marks are preserved and are the property of Crownhill Associates Limited.
- Source code and binaries are released under the License set out below.
- For derivative works, the date of release shall be 01-Sept-2016 that is to say, all derivative works published, distributed, sublicensed, and/or sold after that will be subject to the License set out below.

ProtonIDE

ProtonIDE is a product of the Company, Mecanique. A written agreement exists between Mecanique and Crownhill Associates Limited providing the right to distribute the ProtonIDE in any way Crownhill sees fit, on the proviso that Mecanique and the developer of the ProtonIDE,  Dr David Barker, will provide no support for the ProtonIDE in any form.

Where Crownhill Associates Limited incorporates the ProtonIDE in any distribution of Proton Basic™ the license set out below, shall incorporate ProtonIDE.

Crownhill / L.E.T Device Programmers

For educational purposes, by way of this web site we are placing into the public domain the source code and binaries of Crownhill / L.E.T obsolete products.

- For the purpose of clarity, trade marks are preserved and are the property of Crownhill Associates Limited.
- Source code and binaries are released under the License set out below.
- For derivative works, the date of release shall be 01-Sept-2016 that is to say, all derivative works published, distributed, sublicensed, and/or sold after that will be subject to the License set out below.

License

© Copyright 2021 Crownhill Associates Limited - All Rights Reserved

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge,  copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Marks

Product and brand names used in documentation in this website may be trademarks or registered trademarks of their respective owners. Any such trademarks or registered trademarks are the sole property of their respective owners. Users of this website are required to respect trademarks and brand names.

Microchip-trademarks

© Copyright 2021 Crownhill Associates Limited - All Rights Reserved