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Stack

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The Stack is a buffer which remembers the state of subroutines that are currently executing.

On the 65c816, the stack is always in bank zero. It can be thousands of bytes deep.[1]

In emulation mode it wraps within page one.[2]

The stack grows towards zero, but the most recently pushed byte is nontheless called the top of the stack. These instructions push things to the stack:

Pulling takes one cycle more than pushing. These instructions pull things from the stack:

Note the lack of PLK. PHS and PLS similarly do not exist.

See Also

Reference

  1. https://wilsonminesco.com/816myths
  2. Clark, Bruce. http://www.6502.org/tutorials/65c816opcodes.html#5.1.1