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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:...
**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...
**????? (Profusion) c:99
Chips:
Memory Access Controller (MAC)
Data Interface Buffer (DIB)
CPUs: 8x P-III Xeon Oct
DRAM Types: SDRAM PC100 2-way Interleave dual channel
Max Mem: 32GB
ECC/Parity: ECC
AGP speed: N/A
Bus Speed: 100
PCI Clock/Bus: 1/3 PCI-66/64
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
**82C546/547 Python PTM3V c:94
***Notes:...
***Info:...
***Configurations:...
***Features:
o 100% PC/AT compatible
o Fully supports the 3.3V/5.0V Pentium processors
o Three chip solution:
- 82C547 System Controller (SYSC) (160-pin PQFP)
- 82C546 AT Bus Controller (ATC) (208-pin PQFP)
- 82C206 Integrated Peripheral Controller (IPC) (84-pin PLLC
or 100-pin PQFP)
o Two buffer/translator support chips:
- 82C606A (100-pin PQFP)
- 82C606B (100-pin PQFP)
o Supports Pentium CPU address pipelining
o 1X clock source, supporting systems running Pentium processor
bus clocks up to 60MHz
o Write-back, direct-mapped cache with size selections:
64KB, 128KB, 256KB, 512KB, 1MB and 2MB
o Programmable cache write policy: write-back or write-through
o Fully programmable cache and DRAM read/write cycles
o Supports 3-2-2-2 cache burst read cycles at 60MHz
o Built-in tag auto-invalidation circuitry
o Support for two programmable non-cacheable memory regions
o Options for cacheable, write-protected, system and video BIOS
o Supports two banks of 64-bit wide DRAMs with 256KB, 512KB, 1MB
2MB, 4MB and 8MBx36 Page Mode
o Supports DRAM configurations up to 128MB
o Supports 3-3-3-3 pipeline DRAM burst cycles
o DRAM post write buffer
o Support for flash ROM
o Shadow RAM option
o Hidden refresh with CAS-before-RAS refresh supported
o High-performance 32-bit local bus support
o Performance-oriented snoop-line comparator for VL/ISA
bus masters
o External DMA page register
o Turbo/slow speed selection
o Asynchronous CPU and VL bus interface
o AT bus clock speed programmability
o Transparent 8042 emulation for Fast CPU Reset and GATEA20
generation
o Supports Ports 92h, Gate A20, and Fast Reset
o Mixed voltage (3.3V and 5.0V), low-power, high speed, 0.8
micron CMOS technology
**82C556/7/8 Viper [no datasheet] ?...
**82C556/7/8N Viper-N Viper Notebook Chipset <05/25/95...
**82C556M/7M/8E Viper-N+ Viper Notebook Chipset c:96...
**82C566/7/8 Viper-Max Chipset Scalable MultiMedia PC Solution ?...
**82C571/572 486/Pentium c:93...
**82C576/7/8 Viper Xpress [no datasheet] ?
***Configurations:...
**82C576/8/9 Viper XPress+ [no datasheet, some info] <01/16/97...
**82C596/597 PTMAWB Pentium Adaptive Write-back (Cobra) c:93...
**82C650/1/2 Discovery (Pentium Pro) [no datasheet] ?...
**82C681/2/6/7 386/486WB EISA c:92...
**82C683 386/486AWB EISA [no datasheet] ?...
**82C693/6/7 Pentium uP Write Back Cache EISA c:93...
**82C700 FireStar c:97...
**82C701 FireStar Plus c:97...
**82C750 Vendetta [no datasheet] ?...
**82c801 SCWB2 DX Single Chip Solution c:92...
**82C802 SCWB2 PC/AT Single Chip [no datasheet] ?...
**82C802G/GP System/Power Management Controller (cached) c:93...
**82C895 System/Power Management Controller (cached) c:Sep94...
**82C898 System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
**Other:...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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