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**82495XP/490XP Cache Controller / Cache RAM (for i860)       06/05/91
***Notes:...
***Info:
The Intel 82495XP cache controller and 82490XP cache RAM, when coupled
with a user-implemented memory  bus controller, provide a second-level
cache  subsystem  that eliminates  the  memory  latency and  bandwidth
bottleneck for  a wide  range of multiprocessor  systems based  on the
i860 XP  microprocessor. The CPU  interface is optimized to  serve the
i860  XP microprocessor  with zero  wait  states at  up to  50 MHz.  A
secondary cache  built from the  82495XP and 82490XP isolates  the CPU
from  the memory subsystem;  the memory  can run  slower and  follow a
different protocol than the i860 XP microprocessor.
         
***Features:...
**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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**82C895         System/Power Management Controller (cached)   c:Sep94
***Notes:...
***Info:...
***Configurations:...
***Features:...
**82C898         System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2       Buffer Devices                                 <Nov94...
**82C822         PCIB (VLB-to-PCI bridge)                         c:94...
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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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