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**82489DX       Advanced Programmable Interrupt Controller    10/12/92
***Notes:...
***Info:...
***Versions:...
***Features:...
**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...
**
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**?????  (Profusion)    c:99...
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**5595       Pentium PCI System I/O                          <12/24/97
***Notes:...
***Info:
SiS5595  is a  highly integrated  system I/O  that constitutes  a high
performance, rich featured, yet glueless solution for both Pentium and
Pentium  II  systems.   

The SiS5595 PCI  system I/O integrates the PCI-to-ISA  bridge with the
DDMA and PC/PCI  DMA, Serial IRQ capability, the  ACPI/Legacy PMU, the
Data  Acquisition   Interface,  the  Universal   Serial  Bus  host/hub
interface,  and the  ISA bus  interface,  which contains  the ISA  bus
controller, the  DMA controllers,  the interrupt controllers,  and the
Timers.  It also integrates the Keyboard controller, and the Real Time
Clock (RTC).  The built-in USB controller, which is fully compliant to
OHCI (Open Host Controller  Interface), provides two USB ports capable
of running full/low speed  USB devices. The Data Acquisition Interface
offers  the  ability of  monitoring  and  reporting the  environmental
condition  of the  PC.  It  could monitor  5  positive analog  voltage
inputs, 2  Fan speed inputs,  and one external temperature  inputs. It
also integrates the automatic power control logic to control the power
ON/OFF for ATX power supply.  In addition, SiS5595 also integrates the
thermal  detection and frequency  ratio control  logic for  Pentium II
CPU.

***Versions:...
***Features:...
**950        LPC I/O                                         <07/16/99...
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**W860551/P UART with FIFO and Printer Port Controller             <94
***Info:...
***Versions:...
***Features:
o  Easily interfaces with most popular microprocessors
o  Pin compatible and functionally compatible with the existing 
   W860451
o  Centronics parallel interface
o  Capable of running all existing 16450 and 16550 software
o  Uses system's 14.3181 BMHz clock input
o  In FIFO mode transmitter and receiver are each buffered with 
   16-byte FIFOs to reduce number of intercepts presented to the CPU
o  Adds or deletes standard asynchronous communication bits (start, 
   stop, and parity) to or from serial data
o  Independently controlled transmit, receive, line status, and data 
   set interrupts
o  Programmable baud rate generator
o  Modem control functions (CTS, RTS, DSR, DTR, RI, and DCD)
o  Fully programmable serial-interface characteristics:
   - 5, 6, 7, or 8-bit characters
   - Even, odd, or no-parity bit generation and detection
   - 1, 1.5, or 2-stop bit generation
   - Baud generation
o  False start bit detection
o  Internal diagnostic capabilities:
   - Loopback controls for communications link fault isolation
   - Break, parity, overrun, framing error simulation
o  Fully prioritized interrupt system controls
o  40-pin PDIP package for W860551 and 44-pin PLCC package for 
   W86C551P

**
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