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**DISCLAIMER!

  THE DOCUMENT IS PROVIDED "AS IS", WITH ABSOLUTELY NO WARRANTY OF ANY
  KIND,  EXPRESS  OR  IMPLIED,  INCLUDING   BUT  NOT  LIMITED  TO  THE
  WARRANTIES OF MERCHANTABILITY, FITNESS  FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL  THE AUTHORS OR COPYRIGHT HOLDERS
  BE LIABLE FOR  ANY CLAIM, DAMAGES OR OTHER LIABILITY,  WHETHER IN AN
  ACTION OF  CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF  OR IN
  CONNECTION WITH  THE DOCUMENT OR  THE USE  OR OTHER DEALINGS  IN THE
  DOCUMENT.

***More Disclaimers:...
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*_IBM...
*ACC Micro...
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*AMD . . . . . . . [no datasheets, some info]...
*Chips & Technologies...
*Contaq  . . . . . [no datasheets, some info]...
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*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82496/491     Cache Controller / Cache RAM (for P5 Pentium) 03/22/93
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
**85C406/5/411/420/431  EISA 386/486 Chipset   [no datasheet]      c91
***Notes:...
**85C460         ISA 386DX/486 Single Chip     [no datasheet]        ?
**85C461         ISA 386DX/486 Single Chip     [no datasheet]        ?...
**85C471/407     Green PC ISA-VLB 486 Single Chip                  <94
***Info:...
***Configurations:...
***Features:
o   Fully IBM PC/AT Compatible. 80486DX2/DX/SX/SL Enhanced, P24D/P24T/
    P24C, M6/M7 and Am486DXL/Am486DXL2 Single Chip Controller
o   Supports L1 Cache Writeback CPU (P24T/P24D/M6/M7) systems
o   Direct Mapped Cache Controller
    - Write-Back or Write-Through Schemes
    - Bank Interleave or Non-Interleave Cache
    - 0/1 Wait State Cache Write Hit
    - Flexible Cache Size : 32/64/128/256/512KB or 1MB
    - 7 bits or 8 bits TAG addresses
    - Flexible 2-1-1-1, 3-1-1-1, 2-2-2-2 and 3-2-2-2 Burst 
      Read/Write Timing
o   Fast Page Burst Mode DRAM Controller
    - 4 Banks up to 128MB of DRAMs
    - 256K/512K/1M/2M/4M/16MXN DRAM Type
    - Programmable DRAM Speed
    - Double-sided SIMMs
o   Two Programmable Non-Cacheable Regions (64KB-4MB area)
o   CAS before RAS Transparent DRAM Refresh
o   BIOS/Video ROM Cacheable
o   Shadow RAM in Increments of 32KB
    - Option to Disable Cache in Shadow RAM Area
o   256K Memory Relocation
o   8042 Emulation of Fast A2OGATE and CPU Reset
o   Supports Port 92h
o   Hardware/Software De-Turbo Switch
o   Supports Two VL-Bus Master
o   Supports Flash Memory
o   Supports Double/Single frequency input
o   CPU Operating frequency 0-100 MHz
o   Supports Power Management Mode
    - Supports the SMM and the SMI
    - CPU Stop Clock Function
    - Four Power Saving States
    - Long and Short System Timers
    - Supports the APM control
    - Supports Break Switch control
    - Power Saving also on non-SM] CPU
    - More System Event Monitoring and the Power Saving Control
o   AT Bus State Machine and Controller
o   Synchronous/Asynchronous AT Bus Clock
o   Programmable AT Bus Speed
    - l/2,l/3,1/4,l/5,1/6,1/8,l/10 of Input Clock or 7.159MHz
o   Programmable Wait State Generation
    - 1 or 2 Wait States for l6-Bit Transfers
    - 4 or 5 Wait States for 8-Bit Transfers
o   Programmable I/O Recovery Time
o   Programmable driving current for the DRAM and the ISA bus signals
o   32-Bit Data Buffer Between CPU and AT System
o   Data Conversion and Swapping Logic for 32-/16-/8-Bit Transfers 
    During CPU and DMA Cycles
o   Data Latches for AT Read Cycles
o   Parity Generation and Detection Logic
o   Port B Register and NMI Logic
o   Integrated Peripheral Controllers
    - 8259A x2 / 8237x2 / 8254 / 74LS612
o   387/487SX and Weitek 3167/4167 Coprocessors Interface
o   208-Pin PQFP
o   0.8nm Low Power CMOS Technology

**85C496/497     486-VIP 486 Green PC VESA/ISA/PCI Chipset         <95...
**85C501/502/503 Pentium/P54C PCI/ISA Chipset                <01/09/95...
**5101/5102/5103 Pentium/P54C PCI/ISA Chipset                <04/02/95...
**5120           Pentium PCI/ISA Chipset (Mobile)            <01/28/97...
**5501/5502/5503 Pentium/P54C PCI/ISA Chipset                <04/02/95...
**5511/5512/5513 Pentium PCI/ISA                             <06/14/95...
**5571           (Trinity) Pentium PCI/ISA Chipset (75MHz)   <12/09/96...
**5581/5582      (Jessie)  Pentium PCI/ISA Chipset (75MHz)   <04/15/97...
**5591/5592/5595 (David)   Pentium PCI A.G.P. Chipset        <01/09/98...
**5596/5513      (Genesis) Pentium PCI Chipset               <03/26/96...
**5597/5598      (Jedi)    Pentium PCI/ISA Chipset           <04/15/97...
**530/5595       (Sinbad) Host, PCI, 3D Graphics & Mem. Ctrl.<11/10/98...
**540            (Spartan) Super7 2D/3D Ultra-AGP Single C.S.<11/30/99...
**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...
**Other:...
**PII/III/Pro...
**Athlon etc...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...