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A diagram showing how the 21-bit micro-operation is broken down into different fields. There are six different types of micro-operations.

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https://assets.oldbytes.space/assets.oldbytes.space/media_attachments/files/109/903/880/775/361/112/original/575c0296936788e7.png

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  1. Ken Shirriff (kenshirriff@oldbytes.space)'s status on Wednesday, 22-Feb-2023 16:11:15 JST Ken Shirriff Ken Shirriff
    in reply to

    The interrupt circuitry is implemented both in microcode and hardware. Microcode is a layer between machine instructions and the hardware, executing low-level 21-bit micro-instructions. These perform moves, combined with several types of actions: ALU, memory, jumps, etc.

    In conversation Wednesday, 22-Feb-2023 16:11:15 JST from oldbytes.space permalink
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