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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...
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**85C206     Integrated Peripheral Controller [no datasheet]         ?
***Notes:...
**5595       Pentium PCI System I/O                          <12/24/97...
**950        LPC I/O                                         <07/16/99...
**Other:...
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*VIA...
**VT82C586/A/B PCI Integrated Peripheral Controller          <10/13/96
***Info:...
***Versions:
VT82C586
VT82C586A
VT82C586B  c: 12/23/96, source: VT82C586B datasheet.

Not 100% sure, but the VT82C586A seems to be the same as the VT82C586,
renamed after the introduction of the VT82C586B.

VT82C586B:
from: http://www.viatech.com/support/faq.htm
available at:https://web.archive.org/web/19990423214228/http://www.viatech.com/support/faq.htm
 
Q: What is the difference between the 586A and 586B southbridge chip?
A: The only difference is the 586B supports ACPI (power management) 
   and the 586A doesn't.

The data in this document is sourced from the VT82C586A datasheet.

***Features:...
**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...
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