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Y Index Register: Difference between revisions
From SnesLab
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=== Reference === | |||
* https://archive.org/details/SNESDevManual/book1/page/n182 | |||
[[Category:SNES Hardware]] | [[Category:SNES Hardware]] | ||
Revision as of 05:41, 20 December 2023
The Y Index Register exists on 65x processors and often holds the current index when iterating over things.
On the S-SMP it is always 8 bits wide. On the 65c816, it may be 8 or 16 bits wide.
Unlike the X index register, there are no instructions to transfer value of the stack pointer to/from Y.