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**82371FB/SB  PCI ISA IDE Xcelerator 82371FB/82371SB (PIIX/3) 01/31/95
***Notes:...
***Info:...
***Versions:...
***Features:
o   Bridge Between the PCI Bus and ISA Bus
o   PCI and ISA Master/Slave Interface
    - PCI from 25-33 MHz
    - ISA from 7.5-8.33 MHz
    - 5 ISA Slots
o   Fast IDE Interface
    - Supports PIO and Bus Master IDE
    - Supports up to Mode 4 Timings
    - Transfer Rates to 22 MB/Sec
    - 8 x 32-Bit Buffer for Bus Master IDE PCI Burst Transfers
    - Separate Master/Slave IDE Mode Support (PIIX3)            
o   Plug-n-Play Port for Motherboard Devices
    - 2 Steerable DMA Channels (PIIX Only)
    - Fast DMA with 4-Byte Buffer (PIIX Only)
    - 2 Steerable Interrupts Lines on the PIIX and 1 Steerable 
      Interrupt Line on the PIIXS
    - 1 Programmable Chip Select
o   Steerable PCI Interrupts for PCI Device Plug-n-Play
o   PCI Specification Revision 2.1 Compliant (PIIX3)
o   Functionality of One 82C54 Timer
    - System Timer; Refresh Request; Speaker Tone Output
o   Two 82C59 Interrupt Controller Functions
    - 14 Interrupts Supported
    - Independently Programmable for Edge/Level Sensitivity
o   Enhanced DMA Functions
    - Two 8237 DMA Controllers
    - Fast Type F DMA
    - Compatible DMA Transfers
    - 7 Independently Programmable Channels
o   X-Bus Peripheral Support
    - Chip Select Decode
    - Controls Lower X-Bus Data Byte Transceiver
o   I/O Advanced Programmable Interrupt Controller (IOAPIC) Support 
    (PIIX3)
o   Universal Serial Bus (USB) Host Controller (PIIX3)
    - Compatible with Universal Host Controller Interface (UHCI)
    - Contains Root Hub with 2 USB Ports
o   System Power Management (Intel SMM Support)
    - Programmable System Management Interrupt (SMI)-Hardware Events,
      Software Events, EXTSMI#
    - Programmable CPU Clock Control (STPCLK#)
    - Fast On/Off Mode
o   Non-Maskable Interrupts (NMI)
    - PCI System Error Reporting
o   NAND Tree for Board-Level ATE Testing
o   208-Pin QFP

**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...
**
**Later chipsets (basic spec):
**440 series:...
**450NX  (?)            06/29/98:...
**?????  (Profusion)    c:99...
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*UMC...
**UM82C206     Integrated Peripheral Controller                    <91
***Info:
The UM82C206  Integrated Peripheral  controller includes two  8237 DMA
controllers, two  8259 Interrupt controllers, one  8254 Timer/Counter,
one MC146818 compatible  Real Time Clock, an additional  64 bytes CMOS
RAM,  one  74LS612   memory  mapper,  and  some   top  level  decoder/
configuration logic circuits.  It is a single chip  integration of all
main peripheral  parts attached  to the X  bus of  PC/AT architecture.
While  providing  full  compatibility  with  PC/AT  architecture,  the
UM82C206  also  offers  some  enhanced  features  and  improved  speed
performance. These  include an additional  64 bytes of  user definable
CMOS RAM in real time clock  and drastically reduced recovery time for
the 8237, 8259  and 8254.  Programmable wait state  option is provided
for the DME  cycles and CPU I/O cycles accessing  this chip. This chip
also  provides programmable  8  or  4 MHz  DMA  clock selection.   The
UM82C206 is implemented using advanced 1.5u CMOS design technology and
is packaged in an 84-pin PLCC.

***Versions:...
***Features:...
**UM82c45x     Serial/Parallel chips                                 ?...
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