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**82385SX     32-bit Cache Controller for 80386SX             01/25/89
***Notes:
date source: TimelineDateSort7_05.pdf, For original 20 MHz version 

***Info:...
***Versions:...
***Features:
o   Improves 386 SX System Performance
    - Reduces Average CPU Wait States to Nearly Zero
    - Zero Wait State Read Hit
    - Zero Wait State Posted Memory Writes
    - Allows Other Masters to Access the System Bus More Readily
o   Hit Rates up to 99%
o   Optimized as 386 SX Companion
    - Simple 386 SX Interface
    - Part of Intel386-Based Compute Engine Including 387 SX Math 
      Coprocessor and 82370 Integrated System Peripheral
    - 16 MHz and 20 MHz Operation
o   Software Transparent
o   Synchronous Dual Bus Architecture
    - Bus Watching Maintains Cache Coherency
o   Maps Full 386 SX Address Space 
o   Flexible Cache Mapping Policies
    - Direct Mapped or 2-Way Set Associative Cache Organization
    - Supports Non-Cacheable Memory Space
    - Unified Cache for Code and Data
o   Integrates Cache Directory and Cache Management Logic
o   High Speed CHMOS Technology
    - 132-Pin PGA Package

**82395DX     High Performance Smart Cache                    06/18/90...
**82395SX     Smart Cache                                     12/17/90...
**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:
Chips:
[82454NX] (PXB) [82453NX] (MUX) 
[82452NX] (RCG) [82451NX] (MIOC) 
[82371EB] (PIIX4E),                            
CPUs:          Single/Dual/Quad P-II Xeon/P-III Xeon
DRAM Types:    FPM EDO 2-way Interleave 4-way Interleave
Mem Rows:      8
DRAM Density:  16Mbit 64Mbit
Max Mem:       8GB
ECC/Parity:    Both
AGP speed:     N/A
Bus Speed:     100
PCI Clock/Bus: 1/3


**?????  (Profusion)    c:99...
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**540            (Spartan) Super7 2D/3D Ultra-AGP Single C.S.<11/30/99
***Info:...
***Configurations...
***Features:...
**55x            SoC (System-on-chip)                        <03/14/02...
**
**Support chips:
**85C206     Integrated Peripheral Controller [no datasheet]         ?...
**5595       Pentium PCI System I/O                          <12/24/97...
**950        LPC I/O                                         <07/16/99...
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