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**82495XP/490XP Cache Controller / Cache RAM (for i860)       06/05/91
***Notes:...
***Info:...
***Features:...
**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:
The OPTi-386WB is a highly integrated PC/AT VLSI chipset, for the high
end  386-based  AT  systems.   It includes  System  Controller  (SYSC,
82C391),   Data  Buffer  Controller   (DBC,  82C392)   and  Integrated
Peripheral Controller (82C206). It is designed for system running from
25 Mhz, 33 Mhz and up to 40 Mhz.

SYSC integrates  the write-back  cache controller, local  DRAM control
logic  AT bus  and CPU  interface  circuitry.  DBC  includes the  data
buffers, AT bus control, decoding logic for keyboard controller, reset
and clock generation logic.

A high performance 386-based system can be implemented easily with 386
WB PC/AT chipset.

***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...
**WD7615     Desktop Buffer Manager                          <04/15/92
***Info:...
***Versions:...
***Features:
o   Allows the WD7XC10 based designs to work with a generic "Super l/O" 
    device or with the WD76C20 and WD76C30
o   Replaces majority of external "glue" logic, up to 13 devices:
    - AT bus address buffers with 24 mA drive
    - AT bus interrupt multiplexing, and interrupt pull ups.
    - AT bus DRQ multiplexing and internal pull downs.
    - Keyboard/mouse interrupt latching and clearing functions
    - A20 Gate logic
    - Controlling the IDE data bit 7 at address 3F7H.
o   Allows implementation of a desktop system with only three external 
    devices
o   Direct connect to AT address bus SA1 through SA19 and LA17 through 
    LA23 with 24 mA drive
o   DAC multiplexing and RESET generation
o   DRAM WE signal from WD76C10 inversion and buffering
o   SMEMR and SMEMW generation with 24mA direct drive
o   Divide by 2 or divide by 4 clock output
o   136-pin MQFP package



**WD7625     Desktop Buffer Manager                          <10/01/92...
**WD8120LV   Super I/O [no datasheet]                                ?
**Other Chips:...
*Winbond...
*ZyMOS...
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