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Programmable I/O Port: Difference between revisions
From SnesLab
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The 8-bit '''Programmable I/O Port''' | The 8-bit '''Programmable I/O Port''' allows the [[5A22]] to communicate with SNES peripherals. | ||
There is the register commonly referred to as '''WRIO''' for short located at 4201h. It has [http://www.learningaboutelectronics.com/Articles/Open-collector-output.php open collector output].<sup>[2]</sup> | |||
=== See Also === | === See Also === | ||
Revision as of 12:36, 19 December 2023
The 8-bit Programmable I/O Port allows the 5A22 to communicate with SNES peripherals.
There is the register commonly referred to as WRIO for short located at 4201h. It has open collector output.[2]
See Also
References
- Official Super Nintendo development manual on the programmable i/o port: Page 2-14-1 of Book I
- https://problemkaputt.de/fullsnes.htm#snescontrollersioportsmanualreading