We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS

Index Register Select: Difference between revisions

From SnesLab
Jump to: navigation, search
(becomes b flag)
(linkify)
Line 13: Line 13:
* [[RTI]]
* [[RTI]]


In [[emulation mode]], the x flag becomes the b flag.
In [[emulation mode]], the x flag becomes the [[break flag]].


=== See Also ===
=== See Also ===

Revision as of 23:39, 21 July 2024

Index Register Select (X) is a flag in the processor status register (bit 4) of the 65c816. It indicates how wide the index registers are:

  • When clear, both index registers are 16 bits wide.
  • When set, both index registers are 8 bits wide.

It is not possible to control the width of the two index registers individually.

It can be affected by:

In emulation mode, the x flag becomes the break flag.

See Also

References