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**82091AA     Advanced Interface Peripheral (AIP)                  c93
***Notes:...
***Info:
The 82091AA Advanced Integrated  Peripheral (AIP) is an integrated I/O
solution  containing  a floppy  disk  controller,  2  serial ports,  a
multi-function parallel port,  an IDE interface, and a  game port on a
single  chip.  The  integration  of  these I/O  devices  results in  a
minimization of  form factor, cost and power  consumption.  The floppy
disk  controller is  the 82078  core core  with a  data rate  up  to 2
Mbs. The serial ports are 16550 compatible. The parallel port supports
all  of  the  IEEE  Standard  1284 protocols  (ECP,  EPP,  Byte,  Com-
patibility,  and Nibble).   The IDE  interface supports  8-  or 16-bit
programmed  I/O and 16-bit  DMA. The  Host Interface  is an  8-bit ISA
interface optimized for  type "F" DMA and no  wait-state I/O accesses.
Improved  throughput and  performance,  the AIP  contains six  16-byte
FIFOs two for each serial port, one for the parallel port, and one for
the floppy  disk controller.  The  AIP also includes  power management
and  3.3V capability for  power sensitive  applications such  as note-
books.   The AIP  supports both  motherboard and  add-in  card config-
urations.

***Versions:...
***Features:...
**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...
**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
***Notes:...
***Info:...
***Features:
o   Two-Way, Set Associative, Secondary Cache for i860 XP 
    Microprocessor
o   50 MHz "No Glue" Interface with CPU
o   Configurable
    - Cache Size 256 or 512 Kbytes
    - Line Width 32, 64 or 128 Bytes
    - Memory Bus Width 64 or 128 Bits
o   Dual-Ported Structure Permits Simultaneous Operations on CPU and
    Memory Buses
o   Efficient MRU Way Prediction
    - Zero Wait States on MRU Hit
    - One Walt State on MRU Miss
o   Dynamically Selectable Update Policies
    - Write-Through
    - Write-Once
    - Write-Back
o   MESI Cache Consistency Protocol
o   Hardware Cache Snooping
o   Maintains Consistency with Primary Cache via Inclusion Principle
o   Flexible User-Implemented Memory Interface Enables Wide Range of
    Product Differentiation
    - Clocked or Strobed
    - Synchronous or Asynchronous
    - Plpelining
    - Memory Bus Protocol
o   82495XP Cache Controller Available in 208-Lead Ceramic Pin Grid 
    Array Package
o   82490XP Cache RAM Available in 84-Lead Plastic Quad Flatpack 
    Package

**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...
**
**Later chipsets (basic spec):
**440 series:...
**450NX  (?)            06/29/98:...
**?????  (Profusion)    c:99...
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
**SL9250  Page Mode Memory Controller (16/20MHz 8MB Max)        <oct88
***Info:...
***Versions:...
***Features:...
**SL9350  Page Mode Memory Controller (16/20/25MHz 16MB Max)    <oct88...
**Other:...
*Motorola...
*OPTi...
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*UMC...
*Unresearched:...
*VIA...
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*Western Digital...
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*ZyMOS...
*General Sources:...