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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...
**64200    (Wingine) High Performance 'Windows Engine'         c:Oct91
***Info:...
***Versions:...
***Features:
o   Cost effective Windows Accelerator
o   Interfaces directly with X86 SX/DX/DX2 Systems
o   Interfaces directly with ISA486 CHIPSet
o   High performance achieved via direct access frame buffer Memory 
    Bus Architecture
o   Direct linear mapping of entire video memory anywhere in system 
    memory space
o   Flexible video memory configurations:  8, 16, or 32-bit wide 
    VRAM (256KB–2MB)
o   Supports the following display modes with 1MB of VRAM:
    • 8bpp up to 1024x768 (interlaced or non-I/L)
    • 16bpp up to 800x600 (with Sierra RAMDAC)
    • 24bpp up to 640x480 (with Bt484 or equiv)
o   Supports higher resolution display modes with 2MB VRAM:
    • 8bpp up to 1280x1024 (non-interlaced)
    • 16bpp up to 1024x768 (interlaced or non-I/L)
    • 24bpp up to 800x600 (non-interlaced)
o   Highly integrated design (non-multiplexed system bus, direct bus 
    drive, minimum external glue logic)
o   All video shifting performed on-chip to allow use of low-cost VGA 
    RAMDACs (allows video rates to 80 MHz)
o   Compatible with high-resolution color palette RAMDACs such as the 
    Bt484 and TI 34075 having separate 8-bit and 32-bit parallel 
    inputs for direct connection to VRAM serial data (allows video 
    rates to 135 MHz)
o   Full VGA compatibility
o   Interfaces directly with the 82C481 True-Color Graphics 
    Accelerator
o   Direct interface to 82C404 programmable clock 
o   In-Circuit Testability Features
o   Small low-cost package:  EIAJ-standard 160-pin plastic flat pack
o   Chip pinouts optimized for PCB layo


**82C206   Integrated Peripheral Controller                        c86...
**82C601/A Single Chip Peripheral Controller                 <08/30/90...
**82C607   Multifunction Controller                             <Jun88...
**82C710   Universal Peripheral Controller                     c:Aug90...
**82C711   Universal Peripheral Controller II                  c:Jan91...
**82C712   Universal Peripheral Controller II                  c:Jan91...
**82C721   Universal Peripheral Controller III                 c:May93...
**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:...