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Programmable I/O Port: Difference between revisions
From SnesLab
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# Official Super Nintendo development manual on the programmable i/o port: [https://archive.org/details/SNESDevManual/book1/page/n80 Page 2-14-1 of Book I] | # Official Super Nintendo development manual on the programmable i/o port: [https://archive.org/details/SNESDevManual/book1/page/n80 Page 2-14-1 of Book I] | ||
# https://problemkaputt.de/fullsnes.htm#snescontrollersioportsmanualreading | # https://problemkaputt.de/fullsnes.htm#snescontrollersioportsmanualreading | ||
# [https://archive.org/details/SNESDevManual/book1/page/n139 page 2-28-1 of Book I] | # [https://archive.org/details/SNESDevManual/book1/page/n139 page 2-28-1 of Book I] on WRIO | ||
# [https://archive.org/details/SNESDevManual/book1/page/n145 page 2-28-7 of Book I] on RDIO | |||
[[Category:SNES Hardware]] | [[Category:SNES Hardware]] | ||
[[Category:Accessories]] | [[Category:Accessories]] | ||
Revision as of 13:13, 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
- page 2-28-1 of Book I on WRIO
- page 2-28-7 of Book I on RDIO