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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...
**ACC2089    486 PCI-based System Super Chip      [no datasheet]     ?
***Notes:...
***Info:...
***Configurations:...
**ACC2168/GT 32-bit 486 Green System Single Chip  [no datasheet]     ?...
**ACC2178A   32-bit 486 Green System Single Chip  [no datasheet]     ?...
**ACC2268    ?486                                 [no datasheet]     ?...
**ACC????    Maple/Maple-133 486-System-On-Chip   [no datasheet]     ?...
**
**Support Chips:
**ACC2016    Buffer and MUX Logic                                  c96...
**ACC2020    Power Management Chip                                 c92...
**ACC5500    Multifunction I/O Control Chip for PS2 Model 50/60    c88...
**
**Other chips
ACC1200   Clock synthesizer Supports Pentium-Pro and Pentium-class PCI
ACC16C451 Multi I/O 1x16450/1xLPT
ACC16C452 Multi I/O 2x16450/1xLPT
ACC16C461 Multi I/O 1x16450/1xLPT
ACC2042   Keyboard/Mouse Controller
ACC2188   PCI bus controller  Support 32-bit PCI Bus interface with built-in power management control and synchronous / asynchronous clock feature. 
ACC3201   PC/XT/AT FDD Controller
ACC3202   PS/2 FDD Controller
ACC3203   PS/2 FDD Controller
ACC3211   PC AT/XT FDD Controller (x4) + with IDE
ACC3221   Multi I/O Controller, floppy/IDE/2x16450/1xLPT
ACC3223   Multi I/O Controller, floppy/IDE/2x16550/1xLPT
ACC3350   Ultra SCSI 
ACC3360   UltraWide SCSI 
ACC3618   3D surround controller ISA
ACC5810   Micro Channel Interface Chip
ACC808 	  Plug-and-Play Controller
ACC????   Manhattan PCI-based FireWire for Pentium
ACC????   Memphis PCI-based CardBus and FireWire

*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...
**82496/491     Cache Controller / Cache RAM (for P5 Pentium) 03/22/93
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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:...