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12 votes
3 answers
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What is the technical definition of "clone" that makes the K1810VM88 (К1810ВМ88) not a clone of the 8088?

The Clueless Engineer YouTube channel posted a video yesterday exploring a Soviet K1810VM88 CPU he got from Ukraine. Apparently he originally used the wording in the video title that the K1810VM88 was ...
hippietrail's user avatar
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14 votes
1 answer
751 views

Why does this Soviet floppy controller have two windows in the chip package?

This is a picture of the KR1818VG93, a Soviet clone of the WD1793 floppy controller. It was used in some Spectrum clones: (source) What are the two windows in the chip package for? They appear to ...
user1908704's user avatar