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Bank Address Register: Difference between revisions
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''Note: this page is likely inaccurate/confusing;'' | |||
The '''Bank Address Register''' (also known as the '''bank byte''') is Nintendo's name for the 8-bit register that fills in the most significant bits of a 24-bit address memory access by the [[5A22]]. It keeps track of what bank the CPU is configured to use. | The '''Bank Address Register''' (also known as the '''bank byte''') is Nintendo's name for the 8-bit register that fills in the most significant bits of a 24-bit address memory access by the [[5A22]]. It keeps track of what bank the CPU is configured to use. | ||
[[PLB]] is the only instruction that modifies this register. | |||
=== See Also === | === See Also === | ||
* [[PHB]] | * [[PHB]] | ||
* [[ | * [[Program Bank Register]] | ||
=== References === | === References === | ||
* Figure 2-21-2 on [https://archive.org/details/SNESDevManual/book1/page/n94 page 2-21-3 of Book I] of the official Super Nintendo development manual | * Figure 2-21-2 on [https://archive.org/details/SNESDevManual/book1/page/n94 page 2-21-3 of Book I] of the official Super Nintendo development manual | ||
* page 6 of 65c816 datasheet | |||
[[Category:Registers]] | [[Category:Registers]] | ||
[[Category:ASM]] | [[Category:ASM]] | ||
Latest revision as of 07:09, 19 December 2023
Note: this page is likely inaccurate/confusing;
The Bank Address Register (also known as the bank byte) is Nintendo's name for the 8-bit register that fills in the most significant bits of a 24-bit address memory access by the 5A22. It keeps track of what bank the CPU is configured to use.
PLB is the only instruction that modifies this register.
See Also
References
- Figure 2-21-2 on page 2-21-3 of Book I of the official Super Nintendo development manual
- page 6 of 65c816 datasheet