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Adds additional exposition.

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Thomas Harte 2021-01-16 20:10:20 -05:00
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InstructionSets/README.md
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# Instruction Sets
Code in here provides the means to disassemble, and to execute code for certain instruction sets.
It **does not seek to emulate specific processors** other than in terms of implementing their instruction sets. So:
* it doesn't involve itself in the actual bus signalling of real processors; and
* instruction-level timing (e.g. total cycle counts) may be unimplemented, and is likely to be incomplete.
This part of CLK is intended primarily to provide disassembly services for static analysis, and processing for machines where timing is not part of the specification — i.e. anything that's an instruction set and a HAL.
## Decoders
A decoder extracts fully-decoded instructions from a data stream for its associated architecture.