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PCI IDE ISA Xcelerator (PIIX), also known as Intel 82371, is a family of
Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, and Delaware General Corporation Law, incorporated in Delaware. Intel designs, manufactures, and sells computer compo ...
southbridge
microchip An integrated circuit (IC), also known as a microchip or simply chip, is a set of electronic circuits, consisting of various electronic components (such as transistors, resistors, and capacitors) and their interconnections. These components a ...
s employed in some Intel
chipset In a computer system, a chipset is a set of electronic components on one or more integrated circuits that manages the data flow between the processor, memory and peripherals. The chipset is usually found on the motherboard of computers. Chips ...
s.
x86 virtualization x86 virtualization is the use of hardware-assisted virtualization capabilities on an x86/x86-64 CPU. In the late 1990s x86 virtualization was achieved by complex software techniques, necessary to compensate for the processor's lack of hardware ...
implementations often support emulations of various PIIX-based chipsets.


Versions


PIIX

The PIIX integrated an IDE controller with two 8237 DMA controllers, the 8254 PIT, and two 8259 PICs and a PCI to ISA bus bridge. It was introduced with the 430FX Triton chipset in 1995. The mobile version was introduced with the 430MX mobile Triton chipset. The following variations existed: *82371FB (PIIX) *82371MX (MPIIX) Mobile


PIIX3

The PIIX3 introduced a USB 1.0 controller and support for an external I/O APIC. It was used with the 430HX and 430VX Triton II and 440FX northbridges. The following variations existed: *82371SB (PIIX3)


Gallery

File:Intel sb82371sb su093.jpg, Intel SB82371SB (PIIX3)


PIIX4

The PIIX4 introduced
ACPI Advanced Configuration and Power Interface (ACPI) is an open standard that operating systems can use to discover and configure computer hardware components, to perform power management (e.g. putting unused hardware components to sleep), auto con ...
support, an improved IDE controller with Ultra DMA/33 support, and an integrated MC146818 style RTC and
CMOS Complementary metal–oxide–semiconductor (CMOS, pronounced "sea-moss ", , ) is a type of MOSFET, metal–oxide–semiconductor field-effect transistor (MOSFET) semiconductor device fabrication, fabrication process that uses complementary an ...
controller. It was used with the 430TX and the 440LX Balboa northbridges. The PIIX4E updated the ACPI support. It was mainly used in 440BX and 440GX chipsets but 440EX, 440ZX, and 450NX chipsets also employed it. The mobile version was used in 440BX and 440ZX-M chipsets. The following variations existed: *82371AB (PIIX4) Base *82371EB (PIIX4E) Enhanced *82371MB (PIIX4M) Mobile


PIIX5

This seems to be a reference to the
Itanium Itanium (; ) is a discontinued family of 64-bit computing, 64-bit Intel microprocessors that implement the Intel Itanium architecture (formerly called IA-64). The Itanium architecture originated at Hewlett-Packard (HP), and was later jointly dev ...
460GX ''I/O and Firmware Bridge'' (IFB) chipset component which has been referred to as 82372FB (PIIX5), 82468FB, and finally FW82468GX (IFB).


See also

* List of Intel chipsets *
Platform Controller Hub The Platform Controller Hub (PCH) is a family of Intel's single-chip chipsets, first introduced in 2009. It is the successor to the Intel Hub Architecture, which used two chipsa northbridge and southbridge, and first appeared in the Intel 5 Se ...
(PCH) * System Controller Hub (SCH) * I/O Controller Hub (ICH) * Super I/O *
Northbridge (computing) In computing, a northbridge (also host bridge, or memory controller hub) is a microchip that comprises the core logic chipset architecture on motherboards to handle high-performance tasks, especially for older personal computers. It is connecte ...
*
Southbridge (computing) In computing, a southbridge is a component of a traditional two-part chipset architecture on motherboards, historically used in personal computers. It works alongside the northbridge to manage communications between the central processing unit ...


References


Bibliography

* * * * Intel products Intel chipsets {{Compu-hardware-stub