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**82384       Clock Generator and Reset Interface                  c86
***Notes:...
***Info:...
***Versions:...
***Features:...
**82385       32-bit Cache Controller for 80386               09/29/87...
**82385SX     32-bit Cache Controller for 80386SX             01/25/89...
**82395DX     High Performance Smart Cache                    06/18/90...
**82395SX     Smart Cache                                     12/17/90...
**82396SX     Smart Cache                                     12/17/90
***Notes:...
***Info:...
***Versions:...
***Features:...
**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
***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...
**HT22          386SX/286 Single Chip (25 MHz)                 c:Sep91
***Info:...
***Configurations:...
***Features:...
**HT25          3-volt Core Logic for 386SX                    c:Dec92...
**HT35          Single-Chip Peripheral Controller [partial info]     ?...
**HTK320        386DX Chip Set                                 c:Sep91...
**HTK340        "Shasta" 486 Chip Set                          c:Jun92...
**Support Chips:
**HT44          Secondary Cache                                c:Jun92...
**Other:...
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