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*_IBM...
*ACC Micro...
**ACC82010   AT Chip Set          (286 12.5/16MHz Max)             c88
***info:...
***Configurations:...
***Features:...
**ACC82020   Turbo PC/AT Chip Set (286/386SX 25MHz Max)            c88...
**ACC82021   Turbo PC/AT Chip Set (286/386SX 25MHz Max)            >88...
**ACC82300   386 AT Chip Set (386DX)                               c88...
**ACC82C100  Single-Chip PC/XT Systems-Controller                  c90...
**ACC83000   Model 30 Integrated Chip Set (MCA)                    c88...
**ACC85000/A Model 50/60 Chipset (MCA)                             c88...
**ACC1000    Turbo PC/XT Integrated Bus and Peripheral Ctrl.  04/02/88...
**ACC2036    Single Chip Solution 2036 (286/386SX)              <Jul92...
**ACC2046/ST 486DX/486SX/386DX Single Chip AT                   <Jul92...
**ACC2048    WB 486 Notebook/Embedded Single Chip [no datasheet]     ?...
**ACC2051/NT PCI Single Chip Solution for Notebook Applications    c96...
**ACC2056    ?Pentium 3.3V Notebook               [no datasheet]<Jan96...
**ACC2057    PCI Notebook/Embedded Single Chip    [no datasheet]<Aug96...
**ACC2066NT  486 Notebook/Embedded Single Chip    [no datasheet]     ?...
**ACC2086    486 VL-based System Super Chip Soluti[no datasheet]     ?...
**ACC2087    Enhanced Super Chip (486 Single Chip)              <Aug96...
**ACC2089    486 PCI-based System Super Chip      [no datasheet]     ?...
**ACC2168/GT 32-bit 486 Green System Single Chip  [no datasheet]     ?...
**ACC2178A   32-bit 486 Green System Single Chip  [no datasheet]     ?...
**ACC2268    ?486                                 [no datasheet]     ?...
**ACC????    Maple/Maple-133 486-System-On-Chip   [no datasheet]     ?...
**
**Support Chips:
**ACC2016    Buffer and MUX Logic                                  c96...
**ACC2020    Power Management Chip                                 c92...
**ACC5500    Multifunction I/O Control Chip for PS2 Model 50/60    c88...
**
**Other chips...
*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...
**82495DX/490DX DX CPU-Cache Chip Set                           <Sep91
***Notes:...
***Info:...
***Configurations:...
***Features:...
**82495XP/490XP Cache Controller / Cache RAM (for i860)       06/05/91...
**82496/491     Cache Controller / Cache RAM (for P5 Pentium) 03/22/93...
**82497/492   Cache Controller / Cache RAM (for P54 Pentium)    <Nov94...
**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...
**SLXXXX   Other chips
SL9091 Video Clock Chip
**
**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:
The VT82C580VPX  Apollo-VPX is a high  performance, cost-effective and
energy efficient chip set for  implementation of PCI / ISA desktop and
notebook   personal   computer   systems   based   on   64-bit   P54C/
Pentium/K5/K6/M1 super-scalar processors.   The CPU / cache connection
is  supported  using  an  "asynchronous"  interface up  to  75Mhz  CPU
external bus speed  (with CPU internal speed up  to 200Mhz and above),
with  CPUs   such  as  the   "P200+"  processors  from  Cyrix   /  IBM
Microelectronics.  The  "asynchronous" interface allows  the processor
external  bus  frequency  to  be  increased above  66MHz  while  still
allowing the PCI  bus to run at the specified  top frequency of 33MHz.
The  chipset also  supports CPU  external bus  speeds up  to  66MHz in
"synchronous" mode, so may also  be used in boards designed around the
popular VT82C580VP (Apollo VP)  chipset.  The 66MHz external bus speed
is used primarily for Intel and AMD processors.  The CPU, DRAM and PCI
bus are all  independently powered so that each of the  bus can be run
at 3.3v or 5v, independently.  The ISA bus always runs at 5v.

The  VT82C580VPX   chip  set   consists  of  the   VT82C585VPX  system
controller, the VT82C586B PCI to  ISA bridge, and two instances of the
VT82C587VP  data  buffers.   The  VT82C585VPX is  the  only  different
component in  a VPX-based system from  the chips used in  an Apollo VP
system: the same VT82C586B South Bridge  chip may be used with all VIA
North  Bridge chips  (Pentium  and PentiumPro-based  designs) and  the
VT82C587VP  Data Buffer  is the  same  chip as  is used  in Apollo  VP
designs.

The CPU bus is minimally loaded with only the CPU, secondary cache and
the chip  set.  The VT82C587VP data  buffers isolate the  CPU bus from
the DRAM and PCI bus so  that CPU and cache operation may run reliably
at  the   high  frequencies  demanded  by   today's  processors.   The
VT82C585VPX contains multiple deep FIFOs to allow efficient concurrent
operation  and DRAM  utilization.   The VT82C586B  PCI  to ISA  bridge
includes  integrated  206-style  IPC  (DMA, interrupt  controller  and
timer),  integrated  keyboard   controller  with  PS2  mouse  support,
integrated DS12885 style  real time clock with extended  256 byte CMOS
RAM,  ACPI-compatible Power  Management  subsystem, integrated  master
mode enhanced IDE / UltraDMA-33  disk controller with full scatter and
gather capability, and integrated USB (universal serial bus) interface
with  root hub  and two  function ports  with built-in  physical layer
transceivers  (refer   to  the  separate  VT82C586B   Data  Sheet  for
additional  information).  A  complete main  board can  be implemented
with only six TTLs.  Refer to  Figure 1 [see datasheet] for the system
block diagram.
***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...
**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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