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Gotta start somewhere, huh.
Espresso is the code name for the Wii U's PowerPC processor.
== Special Purpose Registers ==
{| class="wikitable"
!|Index
!|Name
!|Description
|-
|0x3b0
|HID5[0]
|Enable HID5
|-
|0x3b0
|HID5[1]
|Enable PIR
|-
|0x3B3
|SCR[1]
|Enable bootrom (reset only)
|-
|0x3B4
|SCR[2]
|Enable keystore 00..1f (reset only)
|-
|0x3B5
|SCR[3]
|Enable keystore 20..3f (reset only)
|-
|0x3BB
|SCR[9]
|Start core 1
|-
|0x3BC
|SCR[10]
|Start core 2
|-
|0x3EF
|PIR
|CPU core index (Processor Index Register)
|}
== Special Purpose Registers ==
{| class="wikitable"
!|Index
!|Name
!|Description
|-
|0x3b0
|HID5[0]
|Enable HID5
|-
|0x3b0
|HID5[1]
|Enable PIR
|-
|0x3B3
|SCR[1]
|Enable bootrom (reset only)
|-
|0x3B4
|SCR[2]
|Enable keystore 00..1f (reset only)
|-
|0x3B5
|SCR[3]
|Enable keystore 20..3f (reset only)
|-
|0x3BB
|SCR[9]
|Start core 1
|-
|0x3BC
|SCR[10]
|Start core 2
|-
|0x3EF
|PIR
|CPU core index (Processor Index Register)
|}