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60 lines
2.0 KiB
Markdown
60 lines
2.0 KiB
Markdown
---
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title: Chipset
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description:
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published: true
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date: 2023-05-19T22:24:32.504Z
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tags:
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editor: markdown
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dateCreated: 2021-11-13T11:56:47.463Z
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---
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# Virtual chipsets
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Just as with physical computers, virtual machines are built around a central chipset.
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## Available chipsets for virtual machines
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### i440fx
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The `i440fx` virtual chipset is a legacy chipset, compatible with PCI.
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### Q35
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The `Q35` virtual chipset is based on a modern chipset, compatible with PCI-Express.
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> Did you know that the Open Virtual Machine Firmware (OVMF), which is based on [TianoCore](https://www.tianocore.org/), is the default firmware for EFI-based virtual machines? Its configuration utility can be accessed using the <kbd>Esc</kbd> key.
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{.is-info}
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*The TianoCore splash screen*
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### virt
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The `virt` virtual chipset is the most modern chipset, compatible with PCI-Express. It only supports [virtio-devices](/virt/vm/virtio).
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## Comparison
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| | `i440fx` | `Q35` | `virt` |
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| :- | :-: | :-: | :-: |
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| *Firmware* | [SeaBIOS](/virt/vm/firmware#seabios) / [OVMF](/virt/vm/firmware#ovmf) | [SeaBIOS](/virt/vm/firmware#seabios) / [OVMF](/virt/vm/firmware#ovmf) | [OVMF](/virt/vm/firmware#ovmf) **?** / [RHF](/virt/vm/firmware#rust-hypervisor-firmware) |
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| *PS/2 devices* | **Yes** | **Yes** | No |
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| *USB Controller* | **Yes** | **Yes** | No |
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| *SATA Controller* | No | **Yes** | No |
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| *IDE Controller* | **Yes** | No | No |
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| *Floppy Controller* | **Yes** | No | No |
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| *TPM Support* | No | **Yes** | No? |
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| *PCI-Express Bus* | No | **Yes** | **Yes** |
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| *PCI Bus* | **Yes** | No | No |
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| *Virtual Function I/O* | No | **Yes** | **Yes** |
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> The *`i440fx` and `Q35` chipsets are currently supported by Phyllome OS. Early support for the `virt` model is expected for the Beta version*
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{.is-info}
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## Resources
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* [Official documentation](https://wiki.qemu.org/Features/Q35) on Q35
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---
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*[**Go to parent page**](https://wiki.phyllo.me/)* |