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**82091AA     Advanced Interface Peripheral (AIP)                  c93
***Notes:...
***Info:...
***Versions:...
***Features:
o   Single-Chip PC Compatible I/O Solution for Notebook and Desktop 
    Platforms:
    - 82078 Floppy Disk Controller Core
    - Two 16550 Compatible UARTs
    - One Multi-Function Parallel Port
    - IDE Interface
    - Integrated Back Power Protection
    - Integrated Game Port Chip Select
    - 5V or 3.3V Supply Operation with 5V Tolerant Drive Interface
    - Full Power Management Support
    - Supports Type F DMA Transfers for Faster I/O Performance
    - No Wait-State Host I/O Interface
    - Programmable Interrupt Interfaces
    - Single Crystal/Oscillator Clock (24 MHz)
    - Software Detectable Device ID
    - Comprehensive Powerup Configuration
o   The AIP is 100 Percent Compatible with EISA, ISA and AT
o   Host Interface Features
    - 8-Bit Zero Wait-State ISA Bus Interface
    - DMA with Type F Transfers
    - Five Programmable ISA Interrupt Lines
    - Internal Address Decoder
o   Parallel Port Features
    - All IEEE Standard 1284 Protocols Supported (Compatibility, 
      Nibble, Byte, EPP, and ECP)
    - Peak Bi-Directional Transfer Rate of 2 MB/sec
    - 16-Byte FIFO for ECP
o   Floppy Disk Controller Features
    - 100% Software Compatible with Industry Standard 82077SL and
    - Integrated Analog Data Separator 250K, 300K, 500K, and 1M
    - Programmable Powerdown Command
    - Auto Powerdown and Wakeup Modes
    - Integrated Tape Drive Support
    - Perpendicular Recording Support for 4 MB Drives
    - Programmable Write Pre-Compensation Delays
    - 256 Track Direct Address, Unlimited Track Support
    - 16-Byte FIFO
    - Supports 2 or 4 Drives
o   16550 Compatible UART Features
    - Two Independent Serial Ports
    - Software Compatible with 8250 and 16450 UARTs
    - 16-Byte FIFO per Serial Port
    - Two UART Clock Sources, Supports MIDI Baud Rate
o   IDE Interface Features
    - Generates Chip Selects for IDE Drives
    - Integrated Buffer Control Logic
    - Dual IDE Interface Support
o   Power Management Features
    - Transparent to Operating Systems and Applications Programs
    - Independent Power Control for Each Integrated Device
o   100-Pin QFP Package


**8289        Bus Arbiter (808x)                                   c79...
**82289       Bus Arbiter for iAPX 286 Processor Family            c83...
**82258       Advanced Direct Memory Access Coprocessor(ADMA) 01/01/84...
**82335       High-Integration Interface Device For 386SX      c:Nov88...
**82360SL     I/O Subsystem                                   10/05/90...
**82370       Integrated System Peripheral (for 82376)         c:Oct88...
**82371FB/SB  PCI ISA IDE Xcelerator 82371FB/82371SB (PIIX/3) 01/31/95...
**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
***Notes:...
**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...
**82498/493   Cache Controller / Cache RAM (for P54 Pentium)    <Nov94
***Notes:
Date source: 1995_Intel_Pentium_Processors_and_Related_Components.pdf

Information taken from: 
            1995_Intel_Pentium_Processors_and_Related_Components.pdf*
                                         8249x Cache controllers.pdf**
>*  Datasheet dated Nov'94
>** Datasheet undated, whole document dated '95

The info and features section have  been solely sourced from the first
source.   The  second source  provides  far  more detail.   Additional
information in  the configurations section  has been sourced  from the
second.

Difference to 82497/492 is this supports 1 Mbyte to 2 Mbyte cache.

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***Features:...
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