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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...
**85C471/407     Green PC ISA-VLB 486 Single Chip                  <94
***Info:...
***Configurations:...
***Features:
o   Fully IBM PC/AT Compatible. 80486DX2/DX/SX/SL Enhanced, P24D/P24T/
    P24C, M6/M7 and Am486DXL/Am486DXL2 Single Chip Controller
o   Supports L1 Cache Writeback CPU (P24T/P24D/M6/M7) systems
o   Direct Mapped Cache Controller
    - Write-Back or Write-Through Schemes
    - Bank Interleave or Non-Interleave Cache
    - 0/1 Wait State Cache Write Hit
    - Flexible Cache Size : 32/64/128/256/512KB or 1MB
    - 7 bits or 8 bits TAG addresses
    - Flexible 2-1-1-1, 3-1-1-1, 2-2-2-2 and 3-2-2-2 Burst 
      Read/Write Timing
o   Fast Page Burst Mode DRAM Controller
    - 4 Banks up to 128MB of DRAMs
    - 256K/512K/1M/2M/4M/16MXN DRAM Type
    - Programmable DRAM Speed
    - Double-sided SIMMs
o   Two Programmable Non-Cacheable Regions (64KB-4MB area)
o   CAS before RAS Transparent DRAM Refresh
o   BIOS/Video ROM Cacheable
o   Shadow RAM in Increments of 32KB
    - Option to Disable Cache in Shadow RAM Area
o   256K Memory Relocation
o   8042 Emulation of Fast A2OGATE and CPU Reset
o   Supports Port 92h
o   Hardware/Software De-Turbo Switch
o   Supports Two VL-Bus Master
o   Supports Flash Memory
o   Supports Double/Single frequency input
o   CPU Operating frequency 0-100 MHz
o   Supports Power Management Mode
    - Supports the SMM and the SMI
    - CPU Stop Clock Function
    - Four Power Saving States
    - Long and Short System Timers
    - Supports the APM control
    - Supports Break Switch control
    - Power Saving also on non-SM] CPU
    - More System Event Monitoring and the Power Saving Control
o   AT Bus State Machine and Controller
o   Synchronous/Asynchronous AT Bus Clock
o   Programmable AT Bus Speed
    - l/2,l/3,1/4,l/5,1/6,1/8,l/10 of Input Clock or 7.159MHz
o   Programmable Wait State Generation
    - 1 or 2 Wait States for l6-Bit Transfers
    - 4 or 5 Wait States for 8-Bit Transfers
o   Programmable I/O Recovery Time
o   Programmable driving current for the DRAM and the ISA bus signals
o   32-Bit Data Buffer Between CPU and AT System
o   Data Conversion and Swapping Logic for 32-/16-/8-Bit Transfers 
    During CPU and DMA Cycles
o   Data Latches for AT Read Cycles
o   Parity Generation and Detection Logic
o   Port B Register and NMI Logic
o   Integrated Peripheral Controllers
    - 8259A x2 / 8237x2 / 8254 / 74LS612
o   387/487SX and Weitek 3167/4167 Coprocessors Interface
o   208-Pin PQFP
o   0.8nm Low Power CMOS Technology

**85C496/497     486-VIP 486 Green PC VESA/ISA/PCI Chipset         <95...
**85C501/502/503 Pentium/P54C PCI/ISA Chipset                <01/09/95...
**5101/5102/5103 Pentium/P54C PCI/ISA Chipset                <04/02/95...
**5120           Pentium PCI/ISA Chipset (Mobile)            <01/28/97...
**5501/5502/5503 Pentium/P54C PCI/ISA Chipset                <04/02/95...
**5511/5512/5513 Pentium PCI/ISA                             <06/14/95...
**5571           (Trinity) Pentium PCI/ISA Chipset (75MHz)   <12/09/96...
**5581/5582      (Jessie)  Pentium PCI/ISA Chipset (75MHz)   <04/15/97...
**5591/5592/5595 (David)   Pentium PCI A.G.P. Chipset        <01/09/98...
**5596/5513      (Genesis) Pentium PCI Chipset               <03/26/96...
**5597/5598      (Jedi)    Pentium PCI/ISA Chipset           <04/15/97...
**530/5595       (Sinbad) Host, PCI, 3D Graphics & Mem. Ctrl.<11/10/98...
**540            (Spartan) Super7 2D/3D Ultra-AGP Single C.S.<11/30/99...
**55x            SoC (System-on-chip)                        <03/14/02...
**
**Support chips:
**85C206     Integrated Peripheral Controller [no datasheet]         ?...
**5595       Pentium PCI System I/O                          <12/24/97...
**950        LPC I/O                                         <07/16/99...
**Other:...
**PII/III/Pro...
**Athlon etc...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...