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**82496/491     Cache Controller / Cache RAM (for P5 Pentium) 03/22/93
***Notes:...
***Info:
The 82496 Cache Controller and multiple 82491 Cache SRAMs combine with
the Pentium processor  to form a CPU Cache chip  set designed for high
performance  servers  and   function-rich  desktops.  The  high  speed
interconnect between  the CPU and cache components  has been optimized
to  provide zero-wait  state operation.   This CPU  Cache chip  set is
fully compatible  with existing software,  and has new  data integrity
features for mission critical applications.

The 82496 cache controller implements the MESI write-back protocol for
full multiprocessing support. Dual  ported buffers and registers allow
the 82496  to concurrently  handle CPU bus,  memory bus,  and internal
cache operation for maximum performance.

The 82491. is a customized high-performance SRAM that supports 32, 64,
and 128-bit  wide memory bus widths,  16, 32, and 64  byte line sizes,
and optional sectoring.  The data path between the  CPU bus and memory
bus  is separated  by the  82491, allowing  the CPU  bus  to handshake
synchronously,  asynchronously,  or   with  a  strobed  protocol,  and
allowing concurrent CPU bus and memory bus operations.

***Configurations:...
***Features:...
**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...
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*OPTi...
**82C601/2       Buffer Devices                                 <Nov94
***Info:
OPTi’s 82C601 and  82C602 buffer devices are packaged  in 100-pin PFPs
(Plastic Flat Pack) and are designed to replace approximately nine TTL
components normally found  on PC/AT motherboards, offering significant
cost savings and a substantially simplified PCB layout.

Pin-compatible  with each  other, the  82C602 is  an upgrade  from the
82C601 that adds a real-time  clock (RTC) and power management functi-
onality.   (Later versions  of the  buffer  chip will  also include  a
keyboard controller.)

The 82C601 and 82C602 are closely coupled with OPTi's 82C801/802/802G,
82C499,  and 82C495SLC/XLC  chipsets to  allow higher  integration and
lower cost.

***Versions:...
***Features:...
**82C822         PCIB (VLB-to-PCI bridge)                         c:94...
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