| SeaVGABIOS is a sub-project of the SeaBIOS project - it is an open |
| source implementation of a 16bit X86 |
| [VGA BIOS](http://en.wikipedia.org/wiki/Video_BIOS). SeaVGABIOS is the |
| default VGA BIOS on [QEMU](http://www.qemu.org/). SeaVGABIOS can also |
| run natively on some X86 VGA hardware with |
| [coreboot](http://www.coreboot.org/). |
| |
| Building SeaVGABIOS |
| =================== |
| |
| To build SeaVGABIOS, obtain the [code](Download), run `make |
| menuconfig` and select the type of VGA BIOS to build in the "VGA ROM" |
| menu. Once selected, run `make` and the final VGA BIOS binary will be |
| located in "out/vgabios.bin". |
| |
| The choice of available VGA BIOSes within "make menuconfig" is |
| dependent on whether CONFIG_QEMU, CONFIG_COREBOOT, or CONFIG_CSM is |
| selected. Also, the debug options under the "Debugging" menu apply to |
| SeaVGABIOS. All other options found in "make menuconfig" apply only to |
| SeaBIOS and will not impact the SeaVGABIOS build. |
| |
| If SeaVGABIOS is needed for multiple different devices (eg, QEMU's |
| cirrus emulation and QEMU's "dispi" emulation), then one must compile |
| SeaVGABIOS multiple times with the appropriate config for each build. |
| |
| SeaVGABIOS code |
| =============== |
| |
| The source code for SeaVGABIOS is located in the SeaBIOS |
| [git repository](Download). The main VGA BIOS code is located in the |
| "vgasrc/" directory. The VGA BIOS code is always compiled in 16bit |
| mode. |
| |
| The SeaVGABIOS builds to a separate binary from the main SeaBIOS |
| binary, and much of the VGA BIOS code is separate from the main BIOS |
| code. However, much of the SeaBIOS |
| [developer documentation](Developer_Documentation) applies to |
| SeaVGABIOS. To contribute, please join the |
| [SeaBIOS mailing list](Mailinglist). |
