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First commit after rebranding :-)
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Export/BOM_54M-1_v1.0.0.ods
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# 54М-1
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Схема и печатная плата в доступных для просмотра форматах.
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LICENSE
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LICENSE
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BSD 3-Clause License
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Copyright (c) 2022, Roman Boykov
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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README.md
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# 54М-1
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## Российский клон компьютера ZX Spectrum
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Данная реплика восстановлена по известным схемам, которые были найдены на форуме zx-pk.ru. К сожалению, в более-менее нормальном качестве
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удалось найти только фотографии с верхней стороны печатной платы. Нижнюю сторону пришлось трассировать заново.
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Есть несколько вариантов данной схемы. Эта более поздняя, с дополнительной микросхемой ТМ2, для возможности использования кварцевого резонатора на 14МГц.
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Схема так же содержит параметрический стабилизатор на микросхеме КР142ЕН5 (LM7805). Диоды VD5-VD12 в оригинале расппаиваются на плате клавиатуры. Я их разместил
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на обратной стороне основной платы в корпусах SMD, так же добавил разъем X8 для подключения клавиатуры. При желании, можно не запаивать не то и не другое и подключаться
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напрямую к контактам системного разъема. Системный разъем так же заменен с оригинального ГРПМ1-61 на современный 64-пиновый.
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Информация по данному клону на форумах:
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[zx-pk.ru](https://zx-pk.ru/threads/33139-leningrad-0-aka-voenmekh-54m-1.html)
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[ruecm.forum2x2.ru](https://ruecm.forum2x2.ru/t1172-topic)
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## Особенности:
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- Z80 CPU на чатоте 3,5МГц
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- Одно поле памяти 48k на микросхемах DRAM КР565РУ5.
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[Принципиальная схема](Export/Schematics-54M-1_v1.0.0.pdf)
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[Монтажная схема](Export/PCB_54M-1_v1.0.0.pdf)
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[Чат Scorpion ZS & Ленинград в Telegram](https://t.me/zs_scorpion)
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## Внимание!
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- По данной схеме и герберам плата изготавливалась но пока не отлаживалась.
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# 54M-1
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Исходные файлы проекта в формате EasyEDA.
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How to use:
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At EasyEDA editor, Click the document icon on the topbar, via "Document" > "Open" > "EasyEDA Source", and select json file, then open it at the editor.
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