[Home] [This version is outdated, a new version is here]
*Title...
*Search:...
*Read Me/FAQ/General Info...
**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:
82497 +  8x 82492 (66Mhz, 256K)
82497 + 16x 82492 (66Mhz, 512K)

82497-60 +  8x 82492 (60Mhz, 256K)
82497-60 + 16x 82492 (60Mhz, 512K)

Cache ram is also rated at 60 or 66 MHz.

***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...
*Western Digital...
**WD7855        System controller for 80386SX                <09/25/92
***Notes:...
***Info:...
***Configurations:...
***Features:
Features common to both versions of the WD7855
o   Single chip AT systems logic for desktops, notebooks, palmtops
o   Supports 80386SX microprocessors at speeds up to 33 MHz
o   Supports static, dynamic or cached CPUs
o   Flexible DRAM support: 64K, 256K, 512K x 9, 1 Mbits, 4 Mbits, 
    1M x 18 bits or 2M x 9 bits
o   Choice of non-page or page DRAM operating modes while supporting 
    optional extra wait states for page mode
o   Up to eight banks of two-way interleave memory support
o   Support for major DRAM standards, including 88-pin DRAM card 
    modules
o   User-definable, non-cachable regions
o   Supports external look aside cache
o   Snoop interface to support cached CPUs
o   Programmable full 16-bit I/O decode
o   High-speed, local video bus (VLBI) support
o   Slow Refresh
o   Stop DMA clock
o   0.9 micron CMOS technology
o   160-pin MQFP package
o   Three fully programmable Chip Selects in addition to standard 
    Chip Selects
o   AUTOFAST (automatic CPU speedup)
o   SMI and I/O trapping
o   Suspend/Resume modes
o   Hibernation mode
o   Multiple CPU speeds
o   CPU Sleep/CPU Powerdown modes
o   Peripheral and I/O power control
o   System Activity Monitor (SAM) for idle detection

WD7855LV Laptop Design
o   Supports 3.3 volt operation with on-chip translators for 
    5 volt AT bus (Split rail operation)

**WD7900/LP/LV  System Chip Set for 80286 or 80386SX (Cache) <11/25/91...
**WD8110        System controller for 80386DX/486            <11/30/93...
**
**Support Chips:
**WD76C20x   Floppy, RTC, IDE and Support Logic Device       <11/25/91...
**WD76C30x   Perip. Ctrl, Interrupt Multiplex, and Clock Gen <11/18/91...
**WD7615     Desktop Buffer Manager                          <04/15/92...
**WD7625     Desktop Buffer Manager                          <10/01/92...
**WD8120LV   Super I/O [no datasheet]                                ?
**Other Chips:...
*Winbond...
*ZyMOS...
*General Sources:...