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**82395SX     Smart Cache                                     12/17/90
***Notes:...
**82396SX     Smart Cache                                     12/17/90...
**82485       Turbo Cache (and 485Turbocache)                      c90...
**82489DX       Advanced Programmable Interrupt Controller    10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set                           <Sep91...
**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)...
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*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
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*Symphony...
**SL82C470   'Mozart' 486/386 EISA chipset                     c:Dec91
***Info:...
***Configurations:...
***Features:...
**SL82C490   'Wagner' 486?              [no datasheet]               ?...
**SL82C550   'Rossini' Pentium          [no datasheet]            c:95...
**
**Support Chips:
**SL82C365    Cache Controller (for 386DX/SX)                     c:91...
**SL82C465    Cache Controller (for 486/386DX/SX)                 c:91...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
**VT82C530MV   3.3V Pentium chipset [no datasheet, some info]<05/30/94
***Configurations:...
**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
***Info:
The  Apollo-VP3  is  a  high performance,  cost-effective  and  energy
efficient chip set  for the implementation of AGP /  PCI / ISA desktop
and notebook personal computer systems based on 64-bit Socket-7 (Intel
Pentium and Pentium MMX; AMD K5 /  5k86 and K6 / 6k86; and Cyrix / IBM
6x86 / M2) super-scalar processors.

The  Apollo-VP3 chip set  consists of  the VT82C597  system controller
(472 pin BGA) and the VT82C586B PCI to ISA bridge (208 pin PQFP).  The
VT82C597 system  controller provides superior  performance between the
CPU,  optional synchronous  cache, DRAM,  AGP  bus, and  PCI bus  with
pipelined,  burst,  and  concurrent  operation.  For  pipelined  burst
synchronous  SRAMs, 3-1-1-1-1-1-1-1  timing can  be achieved  for both
read  and  write  transactions  at  66  MHz.   Four  cache  lines  (16
quadwords)  of  CPU/cache  to   DRAM  write  buffers  with  concurrent
write-back capability are included on  chip to speed up cache read and
write miss cycles.

The  VT82C597  supports  six banks  of  DRAMs  up  to 1GB.   The  DRAM
controller  supports standard  Fast  Page Mode  (FPM) DRAM,  EDO-DRAM,
Synchronous DRAM (SDRAM), and SDRAM-II  with Double Data Rate (DDR) in
a flexible mix / match  manner.  The Synchronous DRAM interface allows
zero  wait state bursting  between the  DRAM and  the data  buffers at
66Mhz.  The six banks of DRAM  can be composed of an arbitrary mixture
of 1M / 2M / 4M / 8M / 16MxN DRAMs.  The DRAM controller also supports
optional ECC (single-bit error  correction and multi-bit detection) or
EC (error checking) capability separately selectable on a bank-by-bank
basis.

The VT82C597  also supports full  AGP v1.0 capability for  maximum bus
utilization including  2x mode  transfers, SBA  (SideBand Addressing),
Flush/Fence commands,  and pipelined  grants.  An eight  level request
queue plus a  four level post-write request queue  with thirty-two and
sixteen  quadwords of  read  and write  data  FIFO's respectively  are
included   for  deep   pipelined  and   split  AGP   transactions.   A
single-level GART  TLB with 16  full associative entries  and flexible
CPU/AGP/PCI  remapping control  is also  provided for  operation under
protected mode operating environments.

The VT82C597  supports two 32-bit 3.3  / 5V system buses  (one AGP and
one  PCI) with  64-bit to  32-bit  data conversion.   The 82C597  also
contains a built-in bus-to-bus bridge to allow simultaneous concurrent
operations  on each  bus.   Five 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,  forty-eight  levels  (doublewords) of  post  write
buffers  and  sixteen 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, L1  write-back forward  to PCI
master  and  L1 write-back  merged  with  PCI  post write  buffers  to
minimize PCI master read  latency and DRAM utilization.  The VT82C586B
PCI to ISA bridge supports  four levels (doublewords) of line buffers,
type F DMA transfers and  delay transaction to allow efficient PCI bus
utilization and (PC I-2.1  compliant).  The VT82C586B also includes an
integrated  keyboard  controller with  PS2  mouse support,  integrated
DS12885  style  real time  clock  with  extended  256 byte  CMOS  RAM,
integrated master  mode enhanced IDE controller with  full scatter and
gather capability  and extension to UltraDMA-33 /  ATA-33 for 33MB/sec
transfer rate, integrated USB interface with root hub and two function
ports  with  built-in  physical  layer transceivers,  Distributed  DMA
support, and  OnNow / ACPI compliant advanced  configuration and power
management interface.   A complete main board can  be implemented with
only six TTLs.

The Apollo  VP3 chipset is  ideal for high performance,  high quality,
high energy efficient and high  integration desktop and notebook AGP /
PCI / ISA computer systems.

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