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**93C488         5x86/486 Single Chip PCI controller            <Aug96
***Info:...
***Configurations:...
***Features:...
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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:
82496 +  8x 82491 (256K)
82496 + 16x 82491 (512K)

Further details on  configurations can be found on  p116 of the second
source.

***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
Chips:         
Memory Access Controller (MAC)  
Data Interface Buffer (DIB)
CPUs:          8x P-III Xeon Oct
DRAM Types:    SDRAM PC100 2-way Interleave dual channel
Max Mem:       32GB
ECC/Parity:    ECC
AGP speed:     N/A
Bus Speed:     100
PCI Clock/Bus: 1/3 PCI-66/64



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