|  | The QEMU PC System emulator simulates the following peripherals: | 
|  |  | 
|  | -  i440FX host PCI bridge and PIIX3 PCI to ISA bridge | 
|  |  | 
|  | -  Cirrus CLGD 5446 PCI VGA card or dummy VGA card with Bochs VESA | 
|  | extensions (hardware level, including all non standard modes). | 
|  |  | 
|  | -  PS/2 mouse and keyboard | 
|  |  | 
|  | -  2 PCI IDE interfaces with hard disk and CD-ROM support | 
|  |  | 
|  | -  Floppy disk | 
|  |  | 
|  | -  PCI and ISA network adapters | 
|  |  | 
|  | -  Serial ports | 
|  |  | 
|  | -  IPMI BMC, either and internal or external one | 
|  |  | 
|  | -  Creative SoundBlaster 16 sound card | 
|  |  | 
|  | -  ENSONIQ AudioPCI ES1370 sound card | 
|  |  | 
|  | -  Intel 82801AA AC97 Audio compatible sound card | 
|  |  | 
|  | -  Intel HD Audio Controller and HDA codec | 
|  |  | 
|  | -  Adlib (OPL2) - Yamaha YM3812 compatible chip | 
|  |  | 
|  | -  Gravis Ultrasound GF1 sound card | 
|  |  | 
|  | -  CS4231A compatible sound card | 
|  |  | 
|  | -  PC speaker | 
|  |  | 
|  | -  PCI UHCI, OHCI, EHCI or XHCI USB controller and a virtual USB-1.1 | 
|  | hub. | 
|  |  | 
|  | SMP is supported with a large number of virtual CPUs (upper limit is | 
|  | configuration dependent). | 
|  |  | 
|  | QEMU uses the PC BIOS from the Seabios project and the Plex86/Bochs LGPL | 
|  | VGA BIOS. | 
|  |  | 
|  | QEMU uses YM3812 emulation by Tatsuyuki Satoh. | 
|  |  | 
|  | QEMU uses GUS emulation (GUSEMU32 http://www.deinmeister.de/gusemu/) by | 
|  | Tibor \"TS\" SchΓΌtz. | 
|  |  | 
|  | Note that, by default, GUS shares IRQ(7) with parallel ports and so QEMU | 
|  | must be told to not have parallel ports to have working GUS. | 
|  |  | 
|  | .. parsed-literal:: | 
|  |  | 
|  | |qemu_system_x86| dos.img -device gus -parallel none | 
|  |  | 
|  | Alternatively: | 
|  |  | 
|  | .. parsed-literal:: | 
|  |  | 
|  | |qemu_system_x86| dos.img -device gus,irq=5 | 
|  |  | 
|  | Or some other unclaimed IRQ. | 
|  |  | 
|  | CS4231A is the chip used in Windows Sound System and GUSMAX products | 
|  |  | 
|  | The PC speaker audio device can be configured using the pcspk-audiodev | 
|  | machine property, i.e. | 
|  |  | 
|  | .. parsed-literal:: | 
|  |  | 
|  | |qemu_system_x86| some.img \ | 
|  | -audiodev <backend>,id=<name> \ | 
|  | -machine pcspk-audiodev=<name> | 
|  |  | 
|  | Machine-specific options | 
|  | ~~~~~~~~~~~~~~~~~~~~~~~~ | 
|  |  | 
|  | It supports the following machine-specific options: | 
|  |  | 
|  | - ``x-south-bridge=PIIX3|piix4-isa`` (Experimental option to select a particular | 
|  | south bridge. Default: ``PIIX3``) |