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**82496/491     Cache Controller / Cache RAM (for P5 Pentium) 03/22/93
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**TACT82000   3-Chip 286 [no datasheet]                            c89
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**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...
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