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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



**800 series...
*Headland/G2...
**HT22          386SX/286 Single Chip (25 MHz)                 c:Sep91
***Info:...
***Configurations:...
***Features:...
**HT25          3-volt Core Logic for 386SX                    c:Dec92
***Info:
The HT25  is the industry’s first  3-Volt single chip  core logic with
integrated  power management  for  386SX based  3-Volt systems.   Pro-
grammable  power  management features  give  system manufacturers  the
flexibility of offering customized system solutions.

GENERAL DESCRIPTION
The HT25 is a  PC/AT1M compatible single-chip solution with integrated
power management  designed to operate in a  3-Volt system environment.
This highly integrated chip facilitates  the design of low power, high
performance portable systems.  The  HT25 supports 3-Volt 386SX CPUs at
clock  speeds  up  to  25MHz  at  2.7V to  3.6V.   It  supports  power
management functions using the System Management Mode (SMM).

Flexible  power  management is  the  cornerstone  of the  HT25.   This
approach provides  power saving  features that  can be  customized for
product  differentiation.  Power  management  features include  system
activity monitors  and general purpose  I/O pins.  The  HT25 generates
System Management  Interrupt (SMI) to process  activity information or
when access  to powered down  peripherals is detected.   Further power
savings are achieved through the HT25’s ability to control CPU and NPU
clocks and support for slow refresh and self refresh DRAMs.

The HT25 Memory Controller features BIOS Shadowing, Memory Relocation,
EMS, Page  Mode Memory Access and Interleaving.  The memory controller
allows memory banks to be reordered to allow more efficient memory in-
terleaving. The HT25 supports 512Kb, le, and 4Mb DRAMs.

The HT25 architecture  is optimized for 3-Volt system  designs, the SD
bus acknowledge input provides a flexible I/O bus architecture and the
XD bus is buffered directly  from the HT25.  Further, no external data
bus buffers are required for a closed 3V system.

***Configurations:...
***Features:...
**HT35          Single-Chip Peripheral Controller [partial info]     ?...
**HTK320        386DX Chip Set                                 c:Sep91...
**HTK340        "Shasta" 486 Chip Set                          c:Jun92...
**Support Chips:
**HT44          Secondary Cache                                c:Jun92...
**Other:...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
**Later Chipsets:
Info sourced from the very useful plasma-online.de:
http://www.plasma-online.de/index.html?content=http%3A//www.plasma-online.de/english/identify/picture/pcchips.html

Chipset name   | OEM of                    | used on mainboard
---------------+---------------------------+-----------------------------------------
HX Pro         | ALi M1521/M1523           |  
SX Pro         | SiS 530/5595              | M598
AGP Pro PC-100 | VIA VT82C598AT/VT82C596B  | M577
TX AGP Pro     | SiS 5591/5595/6326        |  
TX Two         | ALi M1531/M1543           | 
TX Pro         | ALi M1531/M1543           | M560, M575
TX Pro II      | SiS 5597/5598             | M571
TX Pro III     | VIA VT82C580VPX/VT82C586B | M573
TX Pro IV      | SiS 5591/5592             | M570
Top Gun        | ALi Aladdin IV+           | M565
VIA GRA        | VIA VT8501/VT82C596B      | M858LMR
VX Pro         | VIA VT82C580VP/VT82C586B  | 	 
VX Pro +       | VIA VT82C580VPX/VT82C586B | 	 
VX Pro II      | UTron / HiNT UT801X       |   		 
VX two         | VIA VT82C580VP/VT82C586B  | Amptron PM-8600A
VX two         | VIA VT82C580VPX/VT82C586B | Amptron PM-8600B
BXToo          | VIA Apollo Pro            | M760V, M761V
BXToo          | VIA VT82C693/VT82C686A    | M767V
BXPro          | SiS 600/5595              | M747
BXCel          | ALi M1621/M1543           | M726, M729
BXpert         | VIA VT82C691/VT82C596     |  
BXTel          | VIA Apollo Pro            | M730
Xcel 2000      | SiS 620/5595              | M741LMRT
Super TX       | SiS 5597/5598             | ASUS SP97-V, SP98-N, Jetway J-TX98R2
Super TX       | ALi M1531/M1543           | 
Super TX       | ALi M1541/M1543           | Biostar M5ALA, M5ALC, Pionex MBD-P5ABx
Super TX3      | SiS 5571                  | 	 
Super TX4 AGP  |                           | 	 
GFXcel         | SiS 630                   | 	 
GFXpro         | ALi M1631/M1535D          |  
T-Bird         | SiS730S                   | M810
---------------+---------------------------+----------------------------------------

*SIS...
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*TI (Texas Instruments)...
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*General Sources:...