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Program Counter: Difference between revisions
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The '''Program Counter''' (PC) keeps track of which instruction is currently executing. | The '''Program Counter''' (PC) keeps track of which instruction is currently executing. If incremented past FFFFh, it wraps around to zero. | ||
On the [[S-SMP]] it is 16 bits wide. The low byte is called PCL and the high byte is called PCH. | On the [[S-SMP]] it is 16 bits wide. The low byte is called PCL and the high byte is called PCH. | ||
Revision as of 16:03, 22 July 2024
The Program Counter (PC) keeps track of which instruction is currently executing. If incremented past FFFFh, it wraps around to zero.
On the S-SMP it is 16 bits wide. The low byte is called PCL and the high byte is called PCH.
See Also
References
- Eyes & Lichty page 33, https://archive.org/details/0893037893ProgrammingThe65816/page/33
- subparagraph 8.1.4 on page 3-8-4 of Book I of the official Super Nintendo development manual
- http://www.6502.org/tutorials/6502opcodes.html#PC