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# ASUS P8Z77-V
This page describes how to run coreboot on the [ASUS P8H77-V].
## Flashing coreboot
```{eval-rst}
+---------------------+----------------+
| Type | Value |
+=====================+================+
| Socketed flash | yes |
+---------------------+----------------+
| Model | W25Q64FVA1Q |
+---------------------+----------------+
| Size | 8 MiB |
+---------------------+----------------+
| Package | DIP-8 |
+---------------------+----------------+
| Write protection | yes |
+---------------------+----------------+
| Dual BIOS feature | no |
+---------------------+----------------+
| Internal flashing | no |
+---------------------+----------------+
```
The flash IC is located beside the SATA ports (circled):
### How to flash
The main SPI flash cannot be written because the vendor firmware disables BIOSWE
and enables BLE/SMM_BWP flags in BIOS_CNTL for their latest BIOSes. An external
programmer is required. You must flash standalone, flashing in-circuit doesn't
work. The flash chip is socketed, so it's easy to remove and reflash.
## Working
- PS/2 keyboard with SeaBIOS 1.14.0 and Debian GNU/Linux with kernel 5.10.28
- Integrated Ethernet NIC
- S3 Suspend to RAM
- USB2 on rear and front panel connectors
- USB3
- Integrated SATA
- CPU Temp sensors (tested PSensor on GNU/Linux)
- Native raminit
- Integrated graphics with libgfxinit (VGA/DVI-D/HDMI tested and working)
- PCIe in PCIe-16x slots
- Debug output from serial port
## Untested
- EHCI debugging
- S/PDIF audio
- PS/2 mouse
## Technology
```{eval-rst}
+------------------+--------------------------------------------------+
| Northbridge | :doc:`../../northbridge/intel/sandybridge/index` |
+------------------+--------------------------------------------------+
| Southbridge | bd82x6x |
+------------------+--------------------------------------------------+
| CPU | model_206ax |
+------------------+--------------------------------------------------+
| Super I/O | Nuvoton NCT6779D |
+------------------+--------------------------------------------------+
| EC | None |
+------------------+--------------------------------------------------+
| Coprocessor | Intel Management Engine |
+------------------+--------------------------------------------------+
```
## Extra resources
- [Flash chip datasheet][W25Q64FVA1Q]
[ASUS P8H77-V]: https://www.asus.com/supportonly/p8h77v/helpdesk_knowledge/
[W25Q64FVA1Q]: https://www.winbond.com/resource-files/w25q64fv%20revs%2007182017.pdf
[flashrom]: https://flashrom.org/Flashrom
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