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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
***Info:...
***Versions:...
***Features:...
**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...
**440 series:
***440FX (Natoma)       05/06/96...
***440LX (Balboa)       08/27/97...
***440BX (Seattle)      c:Apr'98...
***440DX (?)            c:?...
***440EX (?)            c:Apr'98...
***440GX (Marlinespike) 06/29/98...
***440ZX & 440ZX-66 (?) 01/04/99...
***440ZX-M (?)          05/17/99...
***440MX (Banister)     05/17/99...
**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...
**UM82C088     PC/XT Integration Chip                              <91
***Info:...
***Configurations:...
***Features:...
**UM82C230     286AT MORTAR Chip Set                               <91...
**UM82C210     386SX/286 AT Chip Set                               <91...
**UM82C3xx     Twinstar & UM82C336F/N & UM82C39x [no datasheet]      ?...
**UM82C380     386 HEAT PC/AT Chip Set                             <91...
**UM82C480     386/486 PC Chip Set                                 c91...
**UM82C493/491 ??????????????? [no datasheet]                        ?...
**UM8498/8496  486 VL Chipset  "Super Energy Star Green"[no dsheet]c94...
**UM8881/8886  HB4 PCI Chipset "Super Energy Star Green"[no dsheet]c94...
**UM8890       Pentium chipset [no datasheet]                        ?...
**
**Support Chips:
**UM82152      Cache Controller (AUStek A38152 clone)              <91...
**UM82C852     Multi I/O For XT                                    <91...
**UM82C206     Integrated Peripheral Controller                    <91...
**UM82c45x     Serial/Parallel chips                                 ?...
**Other chips:...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...