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Stack: Difference between revisions
From SnesLab
(pulling takes one cycle more) |
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In [[emulation mode]] it wraps within page one.<sup>[2]</sup> | In [[emulation mode]] it wraps within page one.<sup>[2]</sup> | ||
The stack grows towards zero. These instructions push things to the stack: | 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: | ||
* [[PHA]] | * [[PHA]] | ||
Revision as of 16:17, 22 July 2024
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.