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Accumulator: Difference between revisions
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Revision as of 07:45, 4 December 2023
An Accumulator is a very fast register inside a processor that acts as a mathematical scratch pad.
The 65c816's accumulator can be either 8 or 16 bits in size, as configured by the M flag.
The high byte ("B") is still retained even when the accumulator is 8 bits wide.
The S-SMP's accumulator is always 8 bits wide.