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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...
**82C710   Universal Peripheral Controller                     c:Aug90
***Info:...
***Versions:...
***Features:...
**82C711   Universal Peripheral Controller II                  c:Jan91...
**82C712   Universal Peripheral Controller II                  c:Jan91...
**82C721   Universal Peripheral Controller III                 c:May93
***Info:...
***Versions:...
***Features:
o   For MOTHERBOARD Applications with configuration via software
o   Low Power CMOS, 100 pin PQFP Package
o   On Chip Power Management Features, Controllable Through Hardware 
    and/or Software
o   100% IBM PC-XT/AT Compatibility.
o   24 mA IBM PC-AT/XT Bus Interface Buffers
o   Schmitt Trigger Input on Reset Pin and FDC interface inputs
o   Two 16450 Compatible UARTs
o   Second serial port data rate can be programmed to support MIDI 
    data rate (31.25KBaud)
o   One IBM PC-XT/AT Compatible Enhanced (Bi-Directional) Parallel 
    Port 
o   24 mA Parallel Port Output Drivers
o   Provides a complete IDE interface for embedded hard disk drives
o   Single 24 MHz Crystal/Oscillator for UART and Floppy Disk 
    Controller
o   Fully uPD72065B and IBM-BIOS Compatible Floppy Controller
    - 48 mA floppy drive interface buffers
    - Data rate and drive control registers
    - Two pin programmable precompensation modes
    - Supports 4 drive interfaces directly without external decoding
    - DMA enable logic
    - Support for 250 kb/s, 300 kb/s and 500kb/s data rates
o   High performance Digital Data Separator
o   Pin and Software Compatible with 82C711
o   No External Filter Components
o   Game Port Chip Select

**82C735   I/O Peripheral Controller With Printgine            c:Jul93...
**82C835   Single CHIP 386sx AT Cache Controller               c:Apr91...
**F87000   Multi-Mode Peripheral Chip                         11/23/93...
**Other:...
**Disk:...
**Video:...
*Contaq  . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**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)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...