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Showing posts from July, 2020

ЕС7978.0007 Serial port board

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This board based on 2 National Semiconductor's INS8250 ics.

ЕС7978. Memory Board EC7978.0003-002

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EC7978 is a IBM XT compatible PC from late Soviet Union epoch. Few days ago i got set of the electric boards without a case. And here is first one - EC7978.0003-002 memory board with: - 18 TM41256 (256k x 1) - 18 КР565РУ5Г (64k  x 1) So total capacity should be 512kb + 128kb = 640 kb