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*_IBM...
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*AMD . . . . . . . [no datasheets, some info]...
**AMD 640/645     (Pentium Based on VIA VT82C590) [some info]      c97
640=VT82C595
645=VT82C586B

The  Shuttle  HOT-603 is  the  only  known  motherboard with  the  640
chipset.

There may be another version known  as the 640AGP with AGP support. It
is difficult to determine if this ever existed.

Various sources  state the  AMD 640  is the same  as the  VIA VT82C590
(VP2) chip set. However no first-hand source (datasheet, etc) has been
found. YMMV

**Later Chipsets:...
*Chips & Technologies...
*Contaq  . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82495XP/490XP Cache Controller / Cache RAM (for i860)       06/05/91
***Notes:...
***Info:...
***Features:
o   Two-Way, Set Associative, Secondary Cache for i860 XP 
    Microprocessor
o   50 MHz "No Glue" Interface with CPU
o   Configurable
    - Cache Size 256 or 512 Kbytes
    - Line Width 32, 64 or 128 Bytes
    - Memory Bus Width 64 or 128 Bits
o   Dual-Ported Structure Permits Simultaneous Operations on CPU and
    Memory Buses
o   Efficient MRU Way Prediction
    - Zero Wait States on MRU Hit
    - One Walt State on MRU Miss
o   Dynamically Selectable Update Policies
    - Write-Through
    - Write-Once
    - Write-Back
o   MESI Cache Consistency Protocol
o   Hardware Cache Snooping
o   Maintains Consistency with Primary Cache via Inclusion Principle
o   Flexible User-Implemented Memory Interface Enables Wide Range of
    Product Differentiation
    - Clocked or Strobed
    - Synchronous or Asynchronous
    - Plpelining
    - Memory Bus Protocol
o   82495XP Cache Controller Available in 208-Lead Ceramic Pin Grid 
    Array Package
o   82490XP Cache RAM Available in 84-Lead Plastic Quad Flatpack 
    Package

**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...
**82C391/392     386WB PC/AT Chipset (386DX)                    <Dec90
***Info:...
***Configurations:...
***Features:...
**82C461/462     Notebook PC/AT chipset [no datasheet]               ?...
**82c463         SCNB Single Ship Notebook                        c:92...
**82c465MV/A/B   Single-Chip Mixed Voltage Notebook Solution    <Oct97...
**82C481?/482?   HiP/486 & HiB/486 [no datasheet]                Oct89...
**82C491/392     486WB PC/AT Chipset                         <04/21/91...
**82C493/392     486SXWB                                     <10/21/91...
**82C495SX/392SX LCWB PC/AT chipset [no datasheet]                   ?...
**82C495SLC      DXSLC 386/486 Low Cost Write Back                c:92...
**82C495XLC      PC/AT Chip Set                                   c:93...
**82c496A/B      DXBB PC/AT Chipset                             <Mar92...
**82C496/7       DXBB PC/AT Chipset (Cached)                 <01/16/92...
**82C498         DXWB PC/AT chipset [no datasheet]                   ?...
**82C499         DXSC DX System Controller                        c:93...
**82C546/547     Python PTM3V                                     c:94...
**82C556/7/8     Viper [no datasheet]                                ?...
**82C556/7/8N    Viper-N  Viper Notebook Chipset             <05/25/95...
**82C556M/7M/8E  Viper-N+ Viper Notebook Chipset                  c:96...
**82C566/7/8     Viper-Max Chipset Scalable MultiMedia PC Solution   ?...
**82C571/572     486/Pentium                                      c:93...
**82C576/7/8     Viper Xpress  [no datasheet]                        ?...
**82C576/8/9     Viper XPress+ [no datasheet, some info]     <01/16/97...
**82C596/597     PTMAWB Pentium Adaptive Write-back (Cobra)       c:93...
**82C650/1/2     Discovery (Pentium Pro) [no datasheet]              ?...
**82C681/2/6/7   386/486WB EISA                                   c:92...
**82C683         386/486AWB EISA [no datasheet]                      ?...
**82C693/6/7     Pentium uP Write Back Cache EISA                 c:93...
**82C700         FireStar                                         c:97...
**82C701         FireStar Plus                                    c:97...
**82C750         Vendetta      [no datasheet]                        ?...
**82c801         SCWB2 DX Single Chip Solution                    c:92...
**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:...