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**Spelling errors/mistyped words
Yes, I  know there are  spelling errors,  and things are  mistyped. It
seems no matter  how hard I try  my fingers hit 't'  twice when typing
'compatible' rendering it 'compattible' numerous, (thousands actually)
times.  I  don't have the  time or the will  to check the  spelling of
everything. Basic spell checking has been peformed. Please let me know
if  there is  anything that  would lead  to incorrect  information, or
something  is so  mangled  that  it needs  revising.  But  if you  can
basically  understand  what was  intended,  just  cope with  it.  Just
cope:-)

BTW, "110" port is  an "I/O" port that has been OCRed  badly, as is an
"1/0" port.

**Info needed on:...
**A note on VESA support of 486 chipsets....
**Datasheets:...
*_IBM...
*ACC Micro...
*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...
**82497/492   Cache Controller / Cache RAM (for P54 Pentium)    <Nov94
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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...
**VL82C480         System/Cache/ISA bus Controller                   ?
***Info:...
***Configurations:...
***Features:
o   Fully compatible with 486-based ISA bus systems
o   Power-on reset option selects various operational modes
o   Up to 40 MHz CPU operation
o   Replaces the following peripheral logic on the motherboard:
    - Two 82C37A DMA controllers
    - 74LS612 memory mappers (extended to support 64 MB)
    - Two 82C59A interrupt controllers
    - 82C54 timer
    - 82284 clock generator and ready interface
    - 82288 bus controller
o   Memory controller features include:
    - Up to 64 MB system memory
    - 256K, 1M or 4M DRAM
    - Double-sided SIMMs
    - Page Mode DRAM access
    - Two-way interleave support
    - Programmable RAS#/CAS# timing
    - Burst read and write support
    - Parity generation/checking for on-board DRAM
    - Staggered RAS# refresh
o   Supports:
    - One to four banks 32 bits wide
    - 8- or 16-bit wide BIOS ROM
    - shadow RAM in the 640K-1M area
    - Asynchronous ISA bus operation up to 16 MHz
    - Relocation of slot ROMs
    - Access to devices residing on the local bus
    - Weitek 4167 numeric coprocessor
o   0.8-micron CMOS technology
o   208-lead MQFP (metric quad flat pack)
o   Includes:
    - Memory/refresh controller
    - Port A, B, and NMI logic
    - Bus steering logic
    - Turbo control
    - hidden refresh
    - Three-stateable outputs for board testing
o   Selectable slow DRAM refresh saves power
o   On-chip write-back cache controller:
    - External tags
    - Direct map
    - Separate "dirty" RAM not required
    - 2-1-1-1 reads with two banks, 2-2-2-2 with one bank
    - 32 KB to 1MB cache size
    - One wait state writes on cache-hits
    - Optional zero wait state writes
    - Optional one wait state reads
o   Other features:
    - Programmable for 10- or 16-bit internal I/O addressing
    - Programmable drive on the DRAM and ISA bus signals
    - Programmable memory access to define "fast-bus", local bus, slot
      bus, non-cacheable and write-protect areas
    - Input pin defines access to local bus devices

**VL82C481         System/Cache/ISA bus Controller                 c92...
**VL82C486         Single-Chip 486, SC486, Controller                ?...
**VL82C425         486 Cache controller                              ?...
**????????         Cheetah 486, PCI [no datasheet]                   ?...
**VL82C3216        Bus Expanding Controller Cache with write buffer  ?...
**VL82C521/522     Lynx/M                                            ?...
**VL82C530         Eagle Ð                                         c95...
**VL82C541/543     Lynx                                            c95...
**VL82C591/593     SuperCore 590                                   c94...
**VL82C594/596/597 Wildcat                                         c95...
**I/O Chips:
**VL82C106 Combination I/O chip                                      ?...
**VL82C107 SCAMP  Combination I/O chip                               ?...
**VL82C108 TOPCAT Combination I/O chip                               ?...
**VL82C110 Combination I/O chip                                      ?...
**VL82C113 SCAMP  Combination I/O chip                               ?...
**VL82C114 Combination I/O chip                                      ?...
**Video: ...
**Disk:...
**Modems:...
**Other:...
**Not sure if they actually exist...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...