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**82395SX     Smart Cache                                     12/17/90
***Notes:...
**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:...
**?????  (Profusion)    c:99...
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
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**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
***Notes:...
***Info:...
***Configurations:...
***Features:
o   Processor interface:
    - Intel 80486SX, DX, DX2, SLe, DX4, P24T, P24D 
    - AMD 486DX, DX2, DXL, DXL2, Plus
    - Cyrix DX, DX2, M7
    - CPU frequencies supported 20, 25, 33, 40 and 50MHz
o   Cache interface:
    - Direct Mapped Cache
    - Two banks interleaved or single bank non-interleaved
    - 64, 128, 256 and 512K cache sizes
    - Programmable wait states for L2 cache reads and writes
    - 2-1-1-1 read burst and zero wait state write @ 33MHz
    - No Valid bit required
    - Supports CPUs with L1 write-back support
o   DRAM interface:
    - Up to 128MB main memory support
    - Supports 256KB, 1MB, 4MB, and 16MB single- and double-sided SIMM 
      modules
    - Read page-hit timing of 3-2-2-2 at 33MHz
    - Supports hidden, slow and CAS-before-RAS refresh
    - Four RAS lines to support four banks of DRAM
    - Programmable wait states for DRAM reads and writes
    - Enhanced DRAM configuration map
o   Power management:
    - Support for SMM (System Management Mode) for system power 
      management implementations
    - Programmable power management
    - Programmable wake-up events through hardware, software and 
      external SMI source
    - Multiple level GREEN support (NESTED_GREEN)
    - STPCLK# protocol support
    - One programmable GREEN event timer
o   ISA interface:
    - 100% IBM PC/AT ISA compatible
    - Integrates DMA, timer and interrupt controllers
    - Optional PS/2 style IRQ1 and 12 latching
o   VESA VL interface:
    - Conforms to the VESA v2.0 specification
    - Optional support for up to two VL masters
o   Miscellaneous features:
    - Full support for shadow RAM, write protection, L1/L2 
      cacheability for video, adapter and system BIOS
    - Enhanced arbitration scheme
    - Transparent 8042 emulation for fast CPU reset and GATEA20 
      generation
o   Packaging:
    - Higher integration
    - Reduced TTL count
    - Low-power, high-speed 0.8-micron CMOS technology
    - 208-pin PQFP (Plastic Quad Flat Pack)

**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...
**UM82C3xx     Twinstar & UM82C336F/N & UM82C39x [no datasheet]      ?
***Notes:...
**UM82C380     386 HEAT PC/AT Chip Set                             <91...
**UM82C480     386/486 PC Chip Set                                 c91...
**UM82C493/491 ??????????????? [no datasheet]                        ?...
**UM8498/8496  486 VL Chipset  "Super Energy Star Green"[no dsheet]c94...
**UM8881/8886  HB4 PCI Chipset "Super Energy Star Green"[no dsheet]c94...
**UM8890       Pentium chipset [no datasheet]                        ?...
**
**Support Chips:
**UM82152      Cache Controller (AUStek A38152 clone)              <91...
**UM82C852     Multi I/O For XT                                    <91...
**UM82C206     Integrated Peripheral Controller                    <91...
**UM82c45x     Serial/Parallel chips                                 ?...
**Other chips:...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...