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*Forex . . . . . . [List only, no datasheets found]
FRX36C200/100         386
FRX36C300/200         386 Write Through
FRX36C300/46C402      386 Write Through
FRX36C311             Single Chip 386SX with Cache
FRX46C411/402         386 Write Through
FRX46C411/412         386 Write Through
FRX46C421A/422        386 Write Back
FRX46C521A            ?
FRX58C613/601A        ?
FRX58C613A/602B/601B  ?

*Intel...
*Headland/G2...
*HMC (Hulon Microelectronics)
**HMC82C206 Integrated Peripherals Controller (10MHz C&T 82c206)     ?...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)
**SN74LS610/2 IBM AT: SN74LS610, SN74LS612 Memory Mappers          <84...
**TACT82000   3-Chip 286 [no datasheet]                            c89...
**TACT82411   Snake  Single-Chip AT Controller                     c90...
**TACT82S411  Snake+ Single-Chip AT Controller [no datasheet]      c91...
**TACT83000   AT 'Tiger' Chip Set (386)                            c89...
**TACT84500   AT Chip Set (486, EISA) [no datasheet, some info]    c91...
**Other:...
*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
***Info:...
***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
***Info:...
***Versions:...
***Features:...
**UM82c45x     Serial/Parallel chips                                 ?...
**Other chips:...
*Unresearched:...
*VIA
**SL9XXX   FlexSet family General information...
**SL9011   System Controller (80286/80386SX/DX, 16/20/25MHz)    <Jan90...
**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...
**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
***Notes:...
***Info:
The  VT82C680  Apollo-P6 is  a  high  performance, cost-effective  and
energy efficient  chip set for  the implementation of  PCI/ISA desktop
and  notebook personal  computer systems  based  on the  64 bit  Intel
Pentium-Pro  super-scalar  processors.   The chipset  supports  multi-
Pentium-Pro configuration  with Intel GTL+ driver  and receiver inter-
face up  to 66 MHz external  CPU bus speed.  The  chipset supports the
Pentium-Pro CPU multi-phase bus protocols for split transactions, four
level deep  in-order queue and  deferred transactions for  optimal CPU
throughput.

The VT82C680 chip set consists  of the VT82C685 system controller, the
VT82C687 data buffer and the  VT82C586 PCI to ISA bridge. The VT82C680
supports six banks  of DRAMs up to 1 GB.  The DRAM controller supports
Standard Page Mode DRAM, EDO-DRAM, Burst EDO-DRAM and Synchronous DRAM
in a  flexible mixed/match manner. The Burst-EDO  and Synchronous DRAM
allows zero wait state bursting between the DRAM and the VT82C687 data
buffers at  66 MHz. The six  banks of DRAM allow  arbitrary mixture of
1M/2M/4M/8M/16MxN  DRAMs  with optional  bank-by-bank  ECC and  parity
support. The chipset supports sixteen level (quadwords) of CPU to DRAM
write  buffers and  sixteen  level  (quadwords) of  DRAM  to CPU  read
buffers to  maximize the CPU bus  and DRAM utilization.  The peak data
transfer rate for the EDO and Synchronous DRAM (or Burst EDO) DRAMs is
266 MB/s and 532 MB/s, respectively.

The VT82C680 supports 3.3/5v 32 bit PCI bus with 64 bit to 32 bit data
conversion.  Sixteen levels  (doublewords) of  post write  buffers are
included to  allow for concurrent  CPU and PCI  operation. Consecutive
CPU addresses  are converted into  burst PCI cycles with  Byte merging
capability  for  optimal  CPU   to  PCI  throughput.  For  PCI  master
operation,  sixteen levels  (doublewords)  of post  write buffers  and
thirty-two levels  (doublewords) of prefetch buffers  are included for
concurrent PCI bus and  DRAM/cache accesses. The chipset also supports
enhanced    PCI    bus     commands    such    as    Memory-Read-Line,
Memory-Read-Multiple  and  Memory-Write-Invalid  commands to  minimize
snoop overhead.  In addition,  the chipset supports  advanced features
such as  snoop ahead, snoop  filtering, CPU write-back forward  to PCI
master  and CPU  write-back  merged  with PCI  post  write buffers  to
minimize PCI  master read latency  and DRAM utilization.  The VT82C586
PCI to ISA bridge supports  four levels (doublewords) of line buffers,
type F DMA transfers and  delay transaction to allow efficient PCI bus
utilization (PCI-2.1 compliant). The VT82C586 also includes integrated
keyboard controller  with PS2 mouse support,  integrated DS12885 style
real time  clock with  extended 128 Byte  CMOS RAM,  integrated master
mode enhanced  IDE controller with full scatter  and gather capability
and extension  to 33 MB/sec UltraDMA-33 transfer  rate, integrated USB
interface with root hub and  two function ports with built-in physical
layer transceiver, and OnNow/ACPI compliant advanced configuration and
power management  interface. A complete main board  can be implemented
with only six TTLs.

The VT82C680 is ideal for  high performance, high quality, high energy
efficient and  high integration desktop and  notebook PCI/ISA computer
systems.

***Configurations:...
***Features:...
**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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