Initial commit v 1.0.0

EasyEDA/1-Schematic_Krasnodar-48.json

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EasyEDA/README.md

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+Krasnodar-48 ZX Spectrum clone from Russia
+==========================================
+
+Source codes for EasyEDA
+
+At editor, Click the document icon on the top bar, via "Document" > "Open" > "EasyEDA Source", and select json file, then open it at the editor.
+
+

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README.md

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+# Краснодар 48Кб
+
+*Краснодар-48, Российский клон компьютера  ZX-Spectrum*
+
+В данном репозитории представлена принципиальная схема, созданная на основе двух схем, представленных на форуме zx-pk.ru с учетом изменений, обнаружженных на скане оригинальной печатной платы.
+Так же, представлена трассировка печатной платы, которая произведена по фотографиям представленным на форуме zx-pk.ru, пользователем solegstar.
+В плату внесен ряд изменений, например, доразведены перемычки. Установлен джампер выбора типа микросхем ОЗУ. Оставлена одна микросхема ПЗУ 27с128 Установлены электролитические конденсаторы по питанию и несколько керамических. К сожалению, не удалось развести элементы интерфейса с магнитофоном C12, R32, т.к. место для их размещения изначально на плате не предусматривалось. Видимо, данные элементы, крепились в оригинале на разъем е магнитофона.
+Так же, на плате не предусмотрено место для достаточног количества блокировочных керамических конденсаторов. Их нужно устанавнивать непосредственно на выводы микросхем из расчета 1 конденсатор на каждую микросхему ОЗУ и 1- конденсатор на 5 корпусов остальных микросхем. Емкость болокировочных конденсаторов от 0,1мкФ.  
+Реальные платы не изготавливались.
+
+
+## Особенности:
+- Раздельное основное и видео ОЗУ (8хКР565РУ5Д1 или Д2, 8хК565РУ6);
+- Наличие универсального параллеьного порта ввода на микросхеме КР580ВВ55 (82C55);
+- Генерация синхросигналов видео на микросхемах КМОП.
+- Много корректирующих RC цепочек;
+
+
+Тема по сборке данного компьютера: https://zx-pk.ru/threads/25830-krasnodar-48kb.html