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Inside an IBM/Motorola mainframe controller chip from 1981

Thursday July 18, 2024. 03:15 PM , from OS News
In this article, I look inside a chip in the IBM 3274 Control Unit.1 But before I discuss the chip, I need to give some background on mainframes.
↫ Ken Shirriff

Whenever we talk about mainframes, I am obligated to link to the story of an 18 year old buying a mainframe, while still living at his parents. One of the greatest presentations of all time.
https://www.osnews.com/story/140256/inside-an-ibm-motorola-mainframe-controller-chip-from-1981/

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