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[[File:PSP CXD2962GG.jpg|thumb|PSP CXD2962GG]]
[[File:PSP CXD2962GG.jpg|thumb|PSP CXD2962GG]]


<b>Tachyon</b> is the codename of the PSP main CPU SoC IC. It is a Sony custom-made LSI which holds the main CPU (Allegrex), the VFPU coprocessor, the Media Engine CPU and its embedded DRAM, the Graphics Engine, the AVC decoder, the Virtual Mobile Engine DSP, the [[Kirk]] and [[Spock]] crypto engines, and the 4KB embedded mask ROM which holds the [[iplloader]] and routines to boot into service mode.
<b>Tachyon</b> is the codename of the PSP main CPU SoC IC. It is a Sony custom-made LSI which holds the main CPU (Allegrex), the VFPU coprocessor, the Media Engine CPU and its embedded DRAM, the Graphics Engine, the AVC decoder, the Virtual Mobile Engine DSP, the [[Kirk]] and [[Spock]] crypto engines, and the 4KB embedded mask ROM which holds the [[PRE-IPL|iplloader]] and routines to boot into service mode.


Tachyon has one primary CPU core which is responsible for running the [[XMB]] and games, and a second CPU core (<i>[[Media Engine]]</i>) which implements the audio and video decoding functionality of the PSP.
Tachyon has one primary CPU core which is responsible for running the [[XMB]] and games, and a second CPU core (<i>[[Media Engine]]</i>) which implements the audio and video decoding functionality of the PSP.
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