1The QEMU PC System emulator simulates the following peripherals:
2
3-  i440FX host PCI bridge and PIIX3 PCI to ISA bridge
4
5-  Cirrus CLGD 5446 PCI VGA card or dummy VGA card with Bochs VESA
6   extensions (hardware level, including all non standard modes).
7
8-  PS/2 mouse and keyboard
9
10-  2 PCI IDE interfaces with hard disk and CD-ROM support
11
12-  Floppy disk
13
14-  PCI and ISA network adapters
15
16-  Serial ports
17
18-  IPMI BMC, either and internal or external one
19
20-  Creative SoundBlaster 16 sound card
21
22-  ENSONIQ AudioPCI ES1370 sound card
23
24-  Intel 82801AA AC97 Audio compatible sound card
25
26-  Intel HD Audio Controller and HDA codec
27
28-  Adlib (OPL2) - Yamaha YM3812 compatible chip
29
30-  Gravis Ultrasound GF1 sound card
31
32-  CS4231A compatible sound card
33
34-  PC speaker
35
36-  PCI UHCI, OHCI, EHCI or XHCI USB controller and a virtual USB-1.1
37   hub.
38
39SMP is supported with a large number of virtual CPUs (upper limit is
40configuration dependent).
41
42QEMU uses the PC BIOS from the Seabios project and the Plex86/Bochs LGPL
43VGA BIOS.
44
45QEMU uses YM3812 emulation by Tatsuyuki Satoh.
46
47QEMU uses GUS emulation (GUSEMU32 http://www.deinmeister.de/gusemu/) by
48Tibor \"TS\" Schütz.
49
50Note that, by default, GUS shares IRQ(7) with parallel ports and so QEMU
51must be told to not have parallel ports to have working GUS.
52
53.. parsed-literal::
54
55   |qemu_system_x86| dos.img -device gus -parallel none
56
57Alternatively:
58
59.. parsed-literal::
60
61   |qemu_system_x86| dos.img -device gus,irq=5
62
63Or some other unclaimed IRQ.
64
65CS4231A is the chip used in Windows Sound System and GUSMAX products
66
67The PC speaker audio device can be configured using the pcspk-audiodev
68machine property, i.e.
69
70.. parsed-literal::
71
72   |qemu_system_x86| some.img \
73   -audiodev <backend>,id=<name> \
74   -machine pcspk-audiodev=<name>
75
76Machine-specific options
77~~~~~~~~~~~~~~~~~~~~~~~~
78
79It supports the following machine-specific options:
80
81- ``x-south-bridge=PIIX3|piix4-isa`` (Experimental option to select a particular
82  south bridge. Default: ``PIIX3``)
83