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**A note on VESA support of 486 chipsets.
Many chipsets state  that they support VESA local  bus.  In some cases
these actually  implement VLB somewhat  like PCI, where it  is entirly
decoupled from the CPU bus. Chipsets  that do not state they work with
VLB,  may  be found  on  motherboards  that  contain VLB  slots.   VLB
is  *basically*  The 486  CPU  pinout in  a  slot  form. Unless  these
m/boards contain  some additional  chips, there VLB  implementation is
directly coupled to the CPU.

**Datasheets:...
*_IBM...
*ACC Micro...
*ALD...
*ALi...
*AMD . . . . . . . [no datasheets, some info]...
*Chips & Technologies...
*Contaq  . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82497/492   Cache Controller / Cache RAM (for P54 Pentium)    <Nov94
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
**VL82C323         SCAMP II, 5 Volt Power Management Unit (PMU)      ?
***Info:...
***Versions:...
***Features:
o   Supports X86-based PC/AT-compatible systems
o   Provides system activity monitoring, peripheral control, power
    supply control, mode timers, and general purpose I/O for laptop/
    notebook power management 
o   Includes the logic to support X86 processors with the System
    Management Mode (SMM) feature
o   Five operation modes:
    - On Mode
    - Doze Mode
    - Sleep Mode
    - Suspend Mode
    - Off Mode
o   Independent programmable timers for power saving modes
o   Independent programmable timers for LCD and backlight control
o   Ten individual power control outputs:
    - Three for LCD power
    - Seven general purpose for peripherals
o   Two to four low battery warning monitors
o   Multiple power on sources from Suspend/Off Mode:
    - Push-Button
    - Real-time clock alarm
    - Modem ring
o   AC power monitoring to disable PMU function
o   Suspend Mode refresh options:
    none, CAS-before-RAS, Self-Refresh
o   Leakage control of outputs during Suspend Mode
o   Wide range of LCD panel power-up/-down sequencing
o   Ten general purpose I/O ports; eight with additional  I/O
    features:
    - One programmable blinking I/O
    - Two optional low battery inputs
o   Watchdog timer to turn-off system power if low battery NMI
    is not serviced
o   Programmable interrupt generation on:
    - PMU power mode
    - Low battery warning
    - External input
    - LCD panel timer
    - Reschedule Suspend Mode Interrupt by BIOS
    - Activity detection
o   Generated interrupt selectable as IROx, NMI, or SMI
o   Controls SCAMP I or SCAMP II (VL82C310 or VL82C316) 
    -SLEEP pin
o   Real-time clock alarm IRQ output pin for SCAMP 1 Controller
o   1.5-micron CMOS Technology
o   100-lead (thin) metric quad flat pack (MQFP) 


**VL82C380         Single chip 386DX PC/AT Controller +on-chip cache ?...
**VL82C325             VL82C386SX System Cache controller            ?...
**VL82C335             VL82C386DX System Cache ctrl. [no d.sheet]    ?...
**VL82C315A/322A/3216  Kodiak 32-Bit Low-Voltage Chip Set            ?...
**VL82C420/144/146     SCAMP IV [no datasheet, some info]          c93...
**VL82C480         System/Cache/ISA bus Controller                   ?...
**VL82C481         System/Cache/ISA bus Controller                 c92...
**VL82C486         Single-Chip 486, SC486, Controller                ?...
**VL82C425         486 Cache controller                              ?...
**????????         Cheetah 486, PCI [no datasheet]                   ?...
**VL82C3216        Bus Expanding Controller Cache with write buffer  ?...
**VL82C521/522     Lynx/M                                            ?...
**VL82C530         Eagle Ð                                         c95...
**VL82C541/543     Lynx                                            c95...
**VL82C591/593     SuperCore 590                                   c94...
**VL82C594/596/597 Wildcat                                         c95...
**I/O Chips:
**VL82C106 Combination I/O chip                                      ?...
**VL82C107 SCAMP  Combination I/O chip                               ?...
**VL82C108 TOPCAT Combination I/O chip                               ?...
**VL82C110 Combination I/O chip                                      ?...
**VL82C113 SCAMP  Combination I/O chip                               ?...
**VL82C114 Combination I/O chip                                      ?...
**Video: ...
**Disk:...
**Modems:...
**Other:...
**Not sure if they actually exist
VL82C300
VL82C304
VL82C305
VL82C316  
VL82C482
VL82C483
VL82C580

*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...