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**82497/492   Cache Controller / Cache RAM (for P54 Pentium)    <Nov94
***Notes:...
***Info:
The 82497 Cache Controller and multiple 82492 Cache SRAMs combine with
the Pentium processor  (735\90, 810\100) to form a  CPU Cache chip set
designed for high performance servers and function-rich desktops.  The
high-speed interconnect between the  CPU and cache components has been
optimized to  provide zero-wait state  operation. This CPU  Cache chip
set  is fully  compatible with  existing  software, and  has new  data
integrity features for mission critical applications.

The 82497 cache controller implements the MESI write-back protocol for
full multiprocessing support. Dual  ported buffers and registers allow
the 82497  to concurrently  handle CPU bus,  memory bus,  and internal
cache operation for maximum performance.

The  82492 is a  customized high-performance  SRAM that  supports 32-,
64-, 128-bit wide memory bus widths, 16-, 32-, and 64-byte line sizes,
and optional sectoring.  The data path between the  CPU bus and memory
bus  is separated  by the  82492, allowing  the CPU  bus  to handshake
synchronously,  asynchronously,  or   with  a  strobed  protocol,  and
allowing concurrent CPU bus and memory bus operations.

***Configurations:...
***Features:...
**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...
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**5595       Pentium PCI System I/O                          <12/24/97
***Notes:...
***Info:...
***Versions:...
***Features:...
**950        LPC I/O                                         <07/16/99...
**Other:...
**PII/III/Pro...
**Athlon etc...
*Symphony...
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*Unresearched:...
*VIA...
**VT82C505     Pentium/486 VL to PCI Bridge                  <05/30/94
***Info:
The  VT82C505 is  a VL  to  PCI bus  bridge that  extends a  currently
matured and  cost-effective VL/ISA chip  set to a  complete PCI/VL/ISA
system. In particular, the VT82C505  can be combined with the VT82C486
or VT82C496G for a two chip  Green PC ready PCI/VL/ISA system based on
80486SX/DX/DX2/DX4   or   compatible   processors  (Figure   1)   [see
datasheet].   Similarly,  the  VT82C505   can  be  combined  with  the
VT82C530MV chip set  (VT82C535MV and VT82C531MV) for a  Green PC ready
PCI/VL/ISA system  based on the  Pentium/P54C/M1 superscalar processor
(Figure  2)[see  datasheet].  In  all  cases,  the  system  management
interface, power  management unit, keyboard controller  with PS2 mouse
interface, clock stop mechanism and write-back level-one cache support
are fully integrated into the chip set.
***Versions:...
***Features:...
**VT82C586/A/B PCI Integrated Peripheral Controller          <10/13/96...
**VT82C596/A   Mobile PCI Integrated Peripheral Controller   <11/05/97...
**VT82C686A/B  PCI Super-I/O Integrated Peripheral Ctrl.     <02/10/98...
**Later P-Pro/II/III/Celeron...
**Later AMD...
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