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*_IBM...
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*AMD . . . . . . . [no datasheets, some info]...
*Chips & Technologies...
*Contaq  . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
**Other:
82EC100G 
82EC800
82EC802G, 82EC802GL - "One Chip32 Bits PC/AT Core Logic"*
82EC810 486 
82EC922 Pentium 
82EC926 PCI-ISA bridge

>* https://patentimages.storage.googleapis.com/pdfs/US5802555.pdf

*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82489DX       Advanced Programmable Interrupt Controller    10/12/92
***Notes:...
***Info:...
***Versions:...
***Features:...
**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)...
*Logicstar...
*Motorola...
*OPTi...
**82C556M/7M/8E  Viper-N+ Viper Notebook Chipset                  c:96
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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...
**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...
*SIS...
**950        LPC I/O                                         <07/16/99
***Info:...
***Versions:...
***Features:
o   Low Pin Count Interface
    - Comply with Intel LPC Interface Specification Rev. 1.0 
      (Sept. 29, 1997)
    - Supports Serial IRQ Protocol
    - Supports PCI PME# Interface
o   PC98/PC99, ACPI Compliant
    - PC98 & PC99 compliant
    - Register sets compatible with "Plug and Play ISA Specification 
      Rev. 1.0a"
    - ACPI V. 1.0 compliant
    - Supports 9 logical devices
o   Enhanced Hardware Monitor
    - Built-in 8-bit Analog to Digital Converter
    - 3 thermal inputs from remote thermistors or thermal diode or 
      diode-connected transistor
    - 8 voltage monitor inputs (VBAT is measured internally.)
    - WatchDog comparison of all monitored values
o   Fan Speed Controller
    - Provides Fan ON/OFF and PWM control
    - 3 programmable Pulse Width Modulation (PWM) Fan control outputs
    - Each PWM output supports 128 steps of PWM modes
    - Monitors 3 Fan tachometer inputs
o   Game Port
    - Built-in 558 quad timers and buffer chips
    - Supports direct connection of two joysticks
    - Game port signals are multiplexed with GPIOs
o   Two 16C550 UARTs
    - Supports two standard Serial ports
    - UART1 is dedicated for Serial port
    - UART2 supports  either Serial Port or IrDA 1.0/ASKIR
o   Consumer Remote Control (TV remote) IR with Power-up Feature
o   IEEE 1284 Parallel Port
    - Standard mode -- Bi-directional SPP compliant
    - Enhanced mode -- EPP V. 1.7 and 1.9 compliant
    - High speed mode -- ECP, IEEE 1284 compliant
    - Backdrive current reduction
    - Printer power-on damage reduction
    − Supports POST (Power-On Self Test) Data Port
o   Floppy Disk Controller
    - Supports two 360K/ 720K/ 1.2M/ 1.44M/ 2.88M floppy 
      disk drives
    - Enhanced digital data separator
    - 3-Mode drives supported
    - Supports automatic write protection via software
o   48 General Purpose I/O Pins
    - Input mode supports switch de-bounce
    - SMI is routed through GPIOs
o   Flash ROM Interface
    - Up to 4M bits flash supported
o   Single 24/48 MHz Clock Inputs
o   Single +5V Power Supply
o   128-Pin PQFP

**Other:...
**PII/III/Pro...
**Athlon etc...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...