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**82495DX/490DX DX CPU-Cache Chip Set                           <Sep91
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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...
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**82C499         DXSC DX System Controller                        c:93
***Info:...
***Configurations:...
***Features:
o   Supports Intel 486 SX/DX/DX2, 487SX, and Intel 386DX/Cyrix 
    486DLC/IBM 486DLC microprocessors
o   Single-chip PC/AT solution: one 208-pin Plastic Flat Package (PFP)
o   1X and 2X clock source, supporting systems running from 16MHz 
    to 50MHz
o   Write-back direct mapped, bank interleave cache with size 
    selections: 64KB, 128KB, 256KB, and 512KB
o   Supports 2-1-1-1, 3-1-1-1, 2-2-2-2, and 3-2-2-2 cache burst cycles
o   Support for two programmable non-cacheable regions
o   Built-in tag auto-invalidation circuitry
o   Option for write-protected, cacheable video and system BIOS
o   Programmable cache and DRAM read/write cycles
o   Supports four banks of 256KB, 1MB, and 4MB 
o   DRAMs for configurations up to 64MB
o   Shadow RAM option
o   Flash ROM support
o   Hidden refresh and slow refresh supported using 
    the CAS-before-RAS refresh method
o   Comprehensive VESA VL and OPTi high-performance local bus support
o   Turbo/slow speed selection
o   Synchronous AT bus clock with programmable clock division options:
o   CLKI(/6, /5 /4, /3), or CLK2I(/6, /5, /4, /3)
o   Zero or one wait state options for 16-bit AT bus cycles
o   Transparent 8042 emulation for fast CPU reset and GATEA20 
    generation 
o   Supports the 80387 numeric coprocessor
o   Low-power, high-speed 0.8-micron CMOS technology
o   Integrated peripherals controller


**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
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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...
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