View source for Broadway

The '''Broadway''' is the Wii's main CPU. It is a 32-bit PowerPC CPU based on the PowerPC 750CL. It is based on the GameCube [[Gekko]] CPU design, being almost identical other than an overclock and the addition of a few new features.

== New features from Gekko ==
(following text copied from official document "Summary of changes to Gekko User's Manual to turn it into a Broadway User's Manual")

The major changes from Gekko to Broadway, covered in the UM are: 

* 1) L2 cache configurable for 32-B fetch mode, 64B-fetch mode or 128B-fetch mode 
* 2) Deeper pipelining on the 60x bus, programmable to max depth of 2, 3 or 4 
* 3) Number of BATs is increased from 4 to 8 each for I and D 
* 4) Addition of the HID4 register (SPRN = 1011) to control the new features. 
* 5) TAU functionality is eliminated (but the THRM1-3 regs remain) 
* 6) PLL configuration (processor-to-bus frequency ratio) expanded 
* 7) Several changes to the signal pins - DRTRY, TLBISYNC, PLL_CFG[4] 
* 8) Several Gekko errata are fixed on Broadway. 
* 9) The PVR is initially 0x00087100 on Broadway.

==Versions==

*DD1.0
*DD1.01
*DD1.2
*DD1.3
*DD2.0 (final)

Source: clkspeed.dol in [[RVL_UJI_DIAG]]