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Second source refers to a licensed duplicate of an original chip made by a second party manufacturer. Ricoh did not license the 6502, but copied the IC and removed the bits protected by patent. |
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| image = file:RP2A03E.jpg
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| produced-start =
| produced-end = 2003
| slowest = 1.79 | slow-unit = [[Megahertz|MHz]]
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== Technical details ==
The Ricoh 2A03<ref name="visual6502">{{cite web|url=http://visual6502.org/images/pages/Nintendo_RP2A_die_shots.html|title=Nintendo RP2A03 and RP2A07|last=Sattler|first=Christian|website=visual6502.org|access-date=2020-08-12}}.</ref> contains
== Sound hardware ==
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== Regional variations ==
PAL versions of the NES (sold in Europe, Asia, and [[Video gaming in Australia|Australia]]) use the '''Ricoh 2A07''' or '''RP2A07''' processor, which is a 2A03 with modifications to better suit the 50 [[Hertz|Hz]] [[Refresh rate|vertical refresh rate]] used in the PAL television standard. However, most developers lacked the resources to properly adjust their games' music from NTSC to PAL, leading to many PAL games sounding slower, slightly lower-pitched, and in some cases, out-of-tune compared to their original NTSC releases.
==See also==
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