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*Chips & Technologies...
*Contaq  . . . . . [no datasheets, some info]...
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**82496/491     Cache Controller / Cache RAM (for P5 Pentium) 03/22/93
***Notes:...
***Info:...
***Configurations:...
***Features:
o   High Performance Second Level Cache
    - Zero Walt States at 66 MHz
    - Two-way Set Associative
    - Write-Back with MESI Protocol
    - Concurrent CPU Bus and Memory Bus Operation
    - Boundary Scan
o   Pentium Processor
    - Chip Set Version of Pentium Processor
    - Superscalar Architecture
    - Enhanced Floating Point
    - On-chip SK Code and SK Data Caches
    - See Pentium Processor User's Manual Volume 2 for more 
      Information
o   Highly Flexible
    - 256K to 512K with parity
    - 32, 64, or 128-Bit Wide Memory Bus
    - Synchronous, Asynchronous, and Strobed Memory Bus Operation
    - Selectable Bus Widths, Line Sizes, Transfers, and Burst Orders
o   Full Multiprocessing Support 
    - Concurrent CPU, Memory Bus, and Snoop Operations
    - Complete MESI Protocol
    - Internal/External Parity Generation/Checking
    - Supports Read-for Ownership, Write-Allocation, and Cache-to-
      Cache Transfers

**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...
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
**Notes:
You eventually get  to know when a  board is made by PC  Chips just by
looking at it.
 
Here is a test:
1.  No manufacture name, or one of the above.
2.  If the board has a lots of components that sound like a well known 
    part but aren't the well known part. i.e. 'HX Pro' instead of 
    '430HX'
3a. A really good feature set where you think, that's exactly what I'm 
    looking for.
 b. The features don't really work as intended. 
4.  The price is fantastic.
5.  Its disappointing on closer examination.

PC Chips is  renowned for making crap products. Some  are actually not
too bad, they're no worse than  your average brand. However some are a
nightmare either by design or  just poorly made. Fake components glued
on is not  uncommon. Fake labels over other components.  PCB's so thin
they require low insertion force ISA connectors, every trick to save a
few $.

**Early Chipsets:...
**Later Chipsets:...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
**VT82C596/A   Mobile PCI Integrated Peripheral Controller   <11/05/97
***Info:...
***Versions:...
***Features:...
**VT82C686A/B  PCI Super-I/O Integrated Peripheral Ctrl.     <02/10/98...
**Later P-Pro/II/III/Celeron...
**Later AMD...
**Other...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...