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Instruction Register

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The Instruction Register (IR) exists on the 65c816. It is 8 bits wide. It is not accessible to the programmer.

References

https://archive.org/details/Programming_the_65816/page/n49
section 2.1 on page 6 of 65c816 datasheet, https://westerndesigncenter.com/wdc/documentation/w65c816s.pdf

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