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**?????  (Profusion)    c:99
Chips:         
Memory Access Controller (MAC)  
Data Interface Buffer (DIB)
CPUs:          8x P-III Xeon Oct
DRAM Types:    SDRAM PC100 2-way Interleave dual channel
Max Mem:       32GB
ECC/Parity:    ECC
AGP speed:     N/A
Bus Speed:     100
PCI Clock/Bus: 1/3 PCI-66/64



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**TACT84500   AT Chip Set (486, EISA) [no datasheet, some info]    c91
***Notes:
InfoWorld Oct 28, 1991 p38:
"...Unlike earlier EISA chip sets, Ti's Tact84500 is comprised of only
four VLSI chips for controlling the bus, memory, peripherals, and data
path unit. The Tact unit can also control eight EISA bus masters along
with DRAM and a single-layer  EISA-bus write buffer.  According to TI,
the suggested  price of the  EISA chip set,  at $130 in  quantities of
100, should  make EISA-based  systems price competitive  with existing
ISA-based systems."

At least one of the chips is called 84542. This is probably the memory
controller.



**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...
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