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Bank Address Register

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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. It is cleared to zero on reset.[2]

WDC calls this register the Data Bank Register (DBR).

PLB, MVN, and MVP modify this register.

See Also

References

  1. Figure 2-21-2 on page 2-21-3 of Book I of the official Super Nintendo development manual
  2. section 2.5 on page 6 of 65c816 datasheet, https://westerndesigncenter.com/wdc/documentation/w65c816s.pdf