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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...
**Disk:
82C5058 Single chip SCSI Disk Controller 10MB/s
82C5059 Single chip PC-AT Disk Controller 20MHz ESDI
82C765  Floppy Disk Controller (1Mb/s)
82C785  Single chip PC-AT Hard Disk Controller (Conners Interface!?>>?IDE?)
**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:
o   Fully IBM-PC/XT compatible
o   82C84 Clock generator with 2 clock-inputs to generate the CPU 
    clock. These are 14.318 MHz and 30 MHz which will support 4.77 MHz
    and 10 MHz CPU clocks with 1/3 duty cycle.
o   82C88 Bus Controller
o   82C37 4 channel DMA controller, channel is used for DRAM refresh
o   82C59 8 channel interrupt controller, level is used for system 
    time base, and level 1 for keyboard input 
o   82C53 3 channel timer, channel is used for system time base, 
    channel 1 for DRAM refresh, and channel 2 for speaker audio
o   82C55 Peripheral l/O r used for keyboard interface and system 
    configuration switch (same as the PC/XT)
o   74322 Keyboard interface, supports PC/XT type keyboard
o   74280 Parity check and generator
o   74670 4 bit page register for DMA
o   Wait state logic
o   NMI control logic
o   ROM decoder for one 2764 and one 27256
o   RAM decoder for 4164 or 41256 DRAM
o   H/W and S/W CPU speed change and indicator
o   Built-in delay line for RAS, CAS
o   Low power consumption: less than 300 mW at 10 MHz CPU speed
o   Small PCB size: 100 pin plastic Flat package

**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:...