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**82371FB/SB PCI ISA IDE Xcelerator 82371FB/82371SB (PIIX/3) 01/31/95
***Notes:...
***Info:
The 82371FB (PIIX) and 82371SB (PIIXS) PCI ISA IDE Xcelerators are
multi-function PCI devices implementing a PCI-to-ISA bridge function
and an PCI IDE function. In addition, the PIIXS implements a Universal
Serial Bus host/hub function. As a PCI-to-ISA bridge, the PIIX/PIIX3
integrates many common I/O functions found in ISA-based PC systems-a
seven-channel DMA controller, two 82059 interrupt controllers, an 8254
timer/counter, and power management support. In addition to compatible
transfers, each DMA channel supports type F transfers. Chip select
decoding is provided for BIOS, real time clock, and keyboard
controller. Edge/Level interrupts and interrupt steering are supported
for PCI plug and play compatibility. The PIIX/PIIX3 supports two IDE
connectors for up to four IDE devices providing an interface for IDE
hard disks and CD ROMS. The PIIX/PIIX3 provides motherboard plug and
play compatibility. PIIX implements two steerable DMA channels
(including type F transfers) and up to two steerable interrupt
lines. PIIX3 implements one steerable interrupt line. The interrupt
lines can be routed to any of the available ISA interrupts. Both
PIIX/PIIX3 implement a programmable chip select.
PIIXS contains a Universal Serial Bus (USB) Host Controller that is
UHCI compatible. The Host Controller’s root hub has two programmable
USB ports. PIIXS also provides support for an external IOAPIC.
----------------------------------------------------------------------
This document describes the PIIXS Component. Unshaded areas
describe the 82371FB PIIX. Shaded areas, like this one, describe
the PIIXS operations that differ from the 82371FB PIIX.
----------------------------------------------------------------------
***Versions:...
***Features:...
**82371MX Mobile PCI I/O IDE Xcelerator (MPIIX) 11/01/95...
**82371AB PCI-TO-ISA / IDE Xcelerator 82371AB (PIIX4) 02/17/97...
**82374/82375 PCI-EISA Bridge (82374EB/82375EB, 374SB/375SB) c:Mar93...
**82378 System I/O (SIO) (82378IB and 82378ZB) c:Mar93...
**82379AB System I/O-APIC (SIO.A) <Dec94...
**82380 32-bit DMA Controller w/ Integrated Peripherals 02/01/87...
**82380FB/AB PCIset: 82380FB Mobile PCI-to-PCI Bridge(MPCI2) 02/17/97...
**82384 Clock Generator and Reset Interface c86...
**82385 32-bit Cache Controller for 80386 09/29/87...
**82385SX 32-bit Cache Controller for 80386SX 01/25/89...
**82395DX High Performance Smart Cache 06/18/90...
**82395SX Smart Cache 12/17/90...
**82396SX Smart Cache 12/17/90...
**82485 Turbo Cache (and 485Turbocache) c90...
**82489DX Advanced Programmable Interrupt Controller 10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91...
**82495XP/490XP Cache Controller / Cache RAM (for i860) 06/05/91...
**82496/491 Cache Controller / Cache RAM (for P5 Pentium) 03/22/93...
**82497/492 Cache Controller / Cache RAM (for P54 Pentium) <Nov94
***Notes:...
***Info:...
***Configurations:...
***Features:...
**82498/493 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**
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