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**Intro:
The information  contained within this  file should not  be considered
100%  correct.   Where  possible   information  has  been  taken  from
datasheets, however  even this info  may be incorrect.  The datasheets
state what  the chip should  do, not what  they actually do.  This is,
compounded further by different revisions of chips.

This  document will  never be  complete, and  I have  no intention  of
finding every  datasheet for  every chip  set. Some  of the  chip sets
listed are  from later systems  in the PIII/P4/Athlon era.   There are
many websites  with information on  these chip sets and  these entries
will likely not be expanded upon.  The focus of this document is early
PC/XT to  Pentium chip sets.  There are  few sites that  clearly illu-
strate this information, and how they relate to each other.

I  aim  to  prioritize   cataloging  significant,  rare  or  otherwise
interesting chip sets.

BTW the reason I wrote all of this down, is so that I could FORGET it.
Basically I needed to free  up some RAM.  I've  a head full  of arcane
snippets of  information on this subject.   I don't want to  end up  a
crazy old man  ranting random disjointed information  ("The C&T CS8220
came before the CS8221 you KNOW!") to disinterested passersby,  unable
to see how senile I've become. A side benefit, this might be useful to
someone else:-)

**Quote style:...
**Cant find a chip?...
**Why this document is not GPL or a wiki...
**Definition of a chip set:...
**'chip set', 'chip-set' or 'chipset'?...
**What's not included:...
**Who made the first chip set?...
**Spelling errors/mistyped words...
**Info needed on:
Columbia Data Products first implementation
AT&T 6300/M24
Compaq Portable implementation
Compaq Deskpro 386
PS/2 model 30

**A note on VESA support of 486 chipsets....
**Datasheets:...
*_IBM...
*ACC Micro...
*ALD...
*ALi...
*AMD . . . . . . . [no datasheets, some info]...
*Chips & Technologies...
*Contaq  . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82395SX     Smart Cache                                     12/17/90
***Notes:...
**82396SX     Smart Cache                                     12/17/90...
**82485       Turbo Cache (and 485Turbocache)                      c90...
**82489DX       Advanced Programmable Interrupt Controller    10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set                           <Sep91...
**82495XP/490XP Cache Controller / Cache RAM (for i860)       06/05/91...
**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...
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
**82c801         SCWB2 DX Single Chip Solution                    c:92
***Notes:...
***Info:...
***Configurations:...
***Features:
o   Supports 486 SX/DX/DX2 and 487SX 
o   Single chip PC/AT solution: one 208 pin CMOS plastic flat package 
o   1 X and 2X clock source, supporting systems running from 16 
    to 50 MHz 
o   Write back direct mapped, bank interleave cache 
    with size selections: 64, 128, 256, and 512K 
o   Supports 2-1-1-1, 3-1-1-1, 2-2-2-2
,   and 3-2-2-2 cache burst cycles 
o   Programmable cache and DRAM read/write cycles 
o   Built in TAG auto invalidation circuitry 
o   Programmable cache and DRAM read/write cycles 
o   Supports eight banks of 256K, 1 M, and 4M DRAMs for 
    configurations up to 64MB 
o   Supports 3-2-2-2 DRAM burst cycles 
o   Hidden refresh, slow refresh, and CAS before RAS refresh 
    supported 
o   Comprehensive VESA VL and OPTi high performance local bus 
    support 
o   Low power, high speed 0.8u CMOS technology 
o   Integrated peripherals controller 

**82C802         SCWB2 PC/AT Single Chip [no datasheet]              ?...
**82C802G/GP     System/Power Management Controller (cached)      c:93...
**82C895         System/Power Management Controller (cached)   c:Sep94...
**82C898         System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2       Buffer Devices                                 <Nov94...
**82C822         PCIB (VLB-to-PCI bridge)                         c:94...
**Other:...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...