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**Intro:
The information contained within this file should not be considered
100% correct. Where possible information has been taken from
datasheets, however even this info may be incorrect. The datasheets
state what the chip should do, not what they actually do. This is,
compounded further by different revisions of chips.
This document will never be complete, and I have no intention of
finding every datasheet for every chip set. Some of the chip sets
listed are from later systems in the PIII/P4/Athlon era. There are
many websites with information on these chip sets and these entries
will likely not be expanded upon. The focus of this document is early
PC/XT to Pentium chip sets. There are few sites that clearly illu-
strate this information, and how they relate to each other.
I aim to prioritize cataloging significant, rare or otherwise
interesting chip sets.
BTW the reason I wrote all of this down, is so that I could FORGET it.
Basically I needed to free up some RAM. I've a head full of arcane
snippets of information on this subject. I don't want to end up a
crazy old man ranting random disjointed information ("The C&T CS8220
came before the CS8221 you KNOW!") to disinterested passersby, unable
to see how senile I've become. A side benefit, this might be useful to
someone else:-)
**Quote style:...
**Cant find a chip?...
**Why this document is not GPL or a wiki...
**Definition of a chip set:...
**'chip set', 'chip-set' or 'chipset'?...
**What's not included:
All information included in this file can be referenced to some
document or picture. Or at least should be:-) As a result of this,
proprietary chip sets, and odd combinations of different chip sets are
not usually included. There tends to be scant information on
proprietary chip sets, i.e. no datasheet. Similarly chip sets built
using some components from one manufacture and some from another are
kind of difficult to deal with.
An example I know of is a 25 MHz 386 DX motherboard that uses the
Intel N82230/N82231 (formerly, ZyMOS) 286 chip set, with an AUStek
cache Controller. I know it existed but there is no documentation.
So the best I can say you'll have to take my word that it existed. I
can't include it because there is no real information there.
Also not included is anything that isn't a PC-compatible chip
set. I.e. no Macintosh info. Any Information on PC-incompatibles/
pseudo-compatibles, and other weirdi-type stuff I have a particular
interest in. See the section: 'Info needed on'. Some information on
video chip sets is included, occasionally but the focus is on
motherboard implementation.
**Who made the first chip set?...
**Spelling errors/mistyped words...
**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...
**UM82C480 386/486 PC Chip Set c91
***Info:
The UMC82C480 is a highly integrated, IBM PC/AT compatible chip set
for high performance 80386/80486 based personal computer systems.
Built with exquisite [yes it really says that] cache controller in
advanced 1.0um CMOS technology, UM82C481 (Integrated Memory
Controller, IMC), UM82C482 (Integrated System Controller, ISC), with
UM82C206 (Integrated Peripheral Controller, IPC), and limited counts
of commercial parts constitute a low cost, highly reliable, full
advanced feature personal computer system.
The UM82C482, Integrated System Controller (ISC), is part of UMC's
high performance 80386/80486 PC/AT chip set. It contains AT bus
control logic, data bus conversion logic, CPU reset logic, clock
generation for CPU, keyboard and timer, DMA/refresh logic and
peripheral interface logic. Incorporated with UM82C481, integrated
Memory Controller (IMC), and UM82C206, Integrated Peripheral
Controller (IPC), ISC provides system control functions for overall
PC/AT computer system.
The UM82C481, Integrated Memory Controller (IMC), is part of UMC's
high performance 80386/80486 PC/AT chip set. It contains sophisticated
direct-mapped cache controller with write back operation, and fast
page mode DRAM controller. Incorporated with UM82C482, Integrated
System Controller (ISC), and UM82C206, Integrated Peripheral
Controller (IPC), IMC provides main memory management function for the
PC/AT computer system.
***Configurations:...
***Features:...
**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:...
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