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**Cant find a chip?
Early chip sets have  a title and a part no. to refer  to the chip set
as a  whole. As time went  on the chip  set became one chip,  so later
chip sets are usually referred to by  the part no. on the actual chip.
These are  usually called "Single  Chip" by the  manufacture, although
they nearly  always follow the 2-chip  North/South-bridge paradigm. So
these are referred to by for example, "M1521/M1523" or "M1521/M23" for
short. If there is a part number for  the chip set as a whole that has
precedence. Try the search function for  a chip part no. and hopefully
it will turn up the chip set it was part of.

**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...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
**UM82C***     (IBM/INTEL Direct replacement)                      c87
Note:  Dates vary  for when  these  chips were  first available.   Two
databooks have been used one from  '86 the other from '91. Not all the
chips  are  listed  in  the  '86  databook, the  date  of  '87  is  an
assumption.

PC/XT:
IBM:	      UMC:	  Desc:
Intel 8284    UM82C84A    25MHz CMOS Clock Generator and Driver
Intel 8288    UM82C88     Bus Controller
Intel 8259    UM8259A     Programmable Interrupt Controller also UM82C59A-2 (CMOS version)
Intel 8237    UM8237A     3-5MHz Programmable DMA Controller (DMAC)
Intel 8253    UM8253*2    2.6-5MHz Programmable Interval Timer
Intel 8255    UM82C55A*   Programmable Peripheral Interface

Note: *  indicates: possible  compatibility, datasheet does  not state
      explicitly. YMMV.

Note: *2  indicates:   The   UM8253   can   be   replaced   with   the
      UM82C54/-2. The datasheet says it is a superset of the 8253, and
      works up to 10MHz. Also it's compatible with the 8254.  AT: IBM:
      UMC: Desc: Intel 82284  UM82C284* 10-12.5MHz Clock Generator and
      Ready Interface Intel 82288  UM82C288* 10-12.5MHz Bus Controller
      Intel 8254  UM82C54/-2 8-10MHz CMOS Programmable  Interval Timer
      Intel  8259  UM8259A   Programmable  Interrupt  Controller  also
      UM82C59A-2 (CMOS version) Intel 8237 UM8237A 3-5MHz Programmable
      DMA Controller (DMAC) 74LS612 UM74HCT612* Memory Mapper MC146818
      RTC  UM82C6818* Real-Time  Clock (RTC)  Intel 8047  ??  Keyboard
      Controller

Note: *  indicates: possible  compatibility, datasheet does  not state
explicitly. YMMV.

**UM82C088     PC/XT Integration Chip                              <91...
**UM82C230     286AT MORTAR Chip Set                               <91...
**UM82C210     386SX/286 AT Chip Set                               <91...
**UM82C3xx     Twinstar & UM82C336F/N & UM82C39x [no datasheet]      ?...
**UM82C380     386 HEAT PC/AT Chip Set                             <91...
**UM82C480     386/486 PC Chip Set                                 c91...
**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:...
**A - D...
**E - G...
**H - I...
**J - R...
**S...
**T - Z...
*VIA...
**SL9XXX   FlexSet family General information...
**SL9011   System Controller (80286/80386SX/DX, 16/20/25MHz)    <Jan90
***Info:...
***Versions:...
***Features:...
**SL9020   Data Controller                                      <Jan90...
**SL9025   Address Controller                                   <Jan90...
**SL9030   Integrated Peripheral Controller                     <Jan90...
**SL9090/A Universal PC/AT Clock Chip                           <oct88...
**SL9095   Power  Management Unit                                    ?...
**SL9151   80286 Page Interleave Memory Controller (16-25MHz)        ?...
**SL9250   80386SX Page Mode Memory Controller (16/20MHz 8MB)        ?...
**SL9251   80386SX Page Interleave Memory Controller         <04/13/90...
**SL9252   80386SX System and Memory Controller              <06/12/90...
**SL9350   80386DX Page Mode Memory Controller (16-25MHz 16MB)       ?...
**SL9351   80386DX Page Interleave Memory Controller (33MHz)         ?...
**SL9352   80386DX System and Memory Controller              <06/12/90...
**SLXXXX   Other chips...
**
**VT82C470     "Jupiter", Chip Set (w/o cache) 386 [no datasheet]    ?
**VT82C475     "Jupiter", Chip Set (w/cache) 386   [no datasheet]    ?
**VT82C486/2/3 "GMC chipset"            [no datasheet, some info]    ?...
**VT82C495/480 "Venus" Chip Set                    [no datasheet]    ?
**VT82C495/491 ? EISA Chip Set          [no datasheet, some info]  <93...
**VT82C496G    Pluto, Green PC 80486 PCI/VL/ISA System       <05/30/94...
**VT82C530MV   3.3V Pentium chipset [no datasheet, some info]<05/30/94...
**VT82C570M    Apollo Master, Green Pentium/P54C             <06/22/95...
**VT82C580VP   Apollo VP,  Pentium/M1/K5 PCI/ISA System      <02/15/96...
**VT82C580VPX  Apollo VPX, VPX/97, Pentium with 66/75MHz Bus <01/09/97
***Notes:...
***Info:...
***Configurations:...
***Features:...
**VT82C590     Apollo VP2, VP2/97, Single-Chip Pentium 66MHz <01/10/97...
**VT82C597/AT  Apollo VP3, Single-Chip for Pentium with AGP  <10/03/97...
**VT82C598MVP  Apollo MVP3,Single-Chip 66/75/83/100MHz & AGP <09/22/97...
**VT8501       Apollo MVP4,Single-Chip 66-100MHz & AGP       <11/04/98...
**VT82C680     Apollo P6, Pentium-Pro Chip Set               <08/30/96...
**Support chips:
**VT82C505     Pentium/486 VL to PCI Bridge                  <05/30/94
***Info:...
***Versions:...
***Features:...
**VT82C586/A/B PCI Integrated Peripheral Controller          <10/13/96...
**VT82C596/A   Mobile PCI Integrated Peripheral Controller   <11/05/97...
**VT82C686A/B  PCI Super-I/O Integrated Peripheral Ctrl.     <02/10/98...
**Later P-Pro/II/III/Celeron...
**Later AMD...
**Other...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...

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