Hardware/Espresso
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Espresso is the code name for the Wii U's PowerPC processor. Unlike the Broadway, the Espresso contains a secure boot ROM so that if the Starbuck is taken over, Espresso code execution should not be possible.
Special Purpose Registers
| Index | Name | Description |
|---|---|---|
| 0x1 | XER | |
| 0x8 | LR | |
| 0x9 | CTR | |
| 0x12 | DSISR | |
| 0x13 | DAR | |
| 0x16 | DEC | |
| 0x19 | SDR1 | |
| 0x1A | SRR0 | |
| 0x1B | SRR1 | |
| 0x10C | UTBL | |
| 0x10D | UTBU | |
| 0x110 | SPRG0 | |
| 0x111 | SPRG1 | |
| 0x112 | SPRG2 | |
| 0x113 | SPRG3 | |
| 0x11A | EAR | |
| 0x11C | TBL | |
| 0x11D | TBU | |
| 0x11F | PVR | |
| 0x210 | IBAT0U | |
| 0x211 | IBAT0L | |
| 0x212 | IBAT1U | |
| 0x213 | IBAT1L | |
| 0x214 | IBAT2U | |
| 0x215 | IBAT2L | |
| 0x216 | IBAT3U | |
| 0x217 | IBAT3L | |
| 0x218 | DBAT0U | |
| 0x219 | DBAT0L | |
| 0x21A | DBAT1U | |
| 0x21B | DBAT1L | |
| 0x21C | DBAT2U | |
| 0x21D | DBAT2L | |
| 0x21E | DBAT3U | |
| 0x21F | DBAT3L | |
| 0x230 | IBAT4U | |
| 0x231 | IBAT4L | |
| 0x232 | IBAT5U | |
| 0x233 | IBAT5L | |
| 0x234 | IBAT6U | |
| 0x235 | IBAT6L | |
| 0x236 | IBAT7U | |
| 0x237 | IBAT7L | |
| 0x238 | DBAT4U | |
| 0x239 | DBAT4L | |
| 0x23A | DBAT5U | |
| 0x23B | DBAT5L | |
| 0x23C | DBAT6U | |
| 0x23D | DBAT6L | |
| 0x23E | DBAT7U | |
| 0x23F | DBAT7L | |
| 0x380 | UGQR0 | |
| 0x381 | UGQR1 | |
| 0x382 | UGQR2 | |
| 0x383 | UGQR3 | |
| 0x384 | UGQR4 | |
| 0x385 | UGQR5 | |
| 0x386 | UGQR6 | |
| 0x387 | UGQR7 | |
| 0x388 | UHID2 | |
| 0x389 | UWPAR | |
| 0x38A | UDMAU | |
| 0x38B | UDMAL | |
| 0x390 | GQR0 | |
| 0x391 | GQR1 | |
| 0x392 | GQR2 | |
| 0x393 | GQR3 | |
| 0x394 | GQR4 | |
| 0x395 | GQR5 | |
| 0x396 | GQR6 | |
| 0x397 | GQR7 | |
| 0x398 | HID2 | |
| 0x399 | WPAR | |
| 0x39A | DMA_U | |
| 0x39B | DMA_L | |
| 0x3A8 | UMMCR0 | |
| 0x3A9 | UPMC1 | |
| 0x3AA | UPMC2 | |
| 0x3AB | USIA | |
| 0x3AC | UMMCR1 | |
| 0x3AD | UPMC3 | |
| 0x3AE | UPMC4 | |
| 0x3B0 | HID5 | |
| 0x3B2 | PCSR | |
| 0x3B3 | SCR | |
| 0x3B4 | CAR | |
| 0x3B5 | BCR | |
| 0x3B6 | WPSAR | |
| 0x3B8 | MMCR0 | |
| 0x3B9 | PMC1 | |
| 0x3BA | PMC2 | |
| 0x3BB | SIA | |
| 0x3BC | MMCR1 | |
| 0x3BD | PMC3 | |
| 0x3BE | PMC4 | |
| 0x3D0 | DCATE | |
| 0x3D1 | DCATR | |
| 0x3D8 | DMATL0 | |
| 0x3D9 | DMATU0 | |
| 0x3DA | DMATR0 | |
| 0x3DB | DMATL1 | |
| 0x3DC | DMATU1 | |
| 0x3DD | DMATR1 | |
| 0x3EF | UPIR | CPU core index (Processor Index Register) |
| 0x3F0 | HID0 | |
| 0x3F1 | HID1 | |
| 0x3F2 | IABR | |
| 0x3F3 | HID4 | |
| 0x3F4 | TDCL | |
| 0x3F5 | DABR | |
| 0x3F9 | L2CR | |
| 0x3FA | TDCH | |
| 0x3FB | ICTC | |
| 0x3FC | THRM1 | |
| 0x3FD | THRM2 | |
| 0x3FE | THRM3 | |
| 0x3FF | PIR |
HID5
| Bit | Description |
|---|---|
| 0 | Enable HID5 |
| 1 | Enable PIR |
SCR
| Bit | Description |
|---|---|
| 1 | Enable bootrom (reset only) |
| 2 | Enable keystore 00..1f (reset only) |
| 3 | Enable keystore 20..3f (reset only) |
| 9 | Start core 1 |
| 10 | Start core 2 |
vWii Mode Clock
While entering in vWii mode, Cafe2Wii reboots the PPC and sets the clock multiplier to 3x. This can be disabled by changing in Cafe2Wii an OR 0x20 to BIC 0x20 in LT_MEMCMPT and an OR 0x99 to OR 0x9D in LT_SYSPROT.