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**82498/493   Cache Controller / Cache RAM (for P54 Pentium)    <Nov94
***Notes:...
***Info:
The 82498 Cache Controller and multiple 82493 Cache SRAMs combine with
the Pentium processor (735/90,  815/100) and future Pentium Processors
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 82498 Cache Controller implements the MESI write-back protocol for
full multiprocessing support.  Dual ported buffers and registers allow
the 82498  to concurrently  handle CPU bus,  memory bus,  and internal
cache operation for maximum performance.

The 82493 is a customized high-performance SRAM that supports 64-, and
128-bit  wide memory  bus widths,  32-,  and 64-byte  line sizes,  and
optional sectoring. The  data path between the CPU  bus and memory bus
is  separated  by  the  82493,  allowing  the  CPU  bus  to  handshake
synchronously,  asynchronously,  or   with  a  strobed  protocol,  and
allowing concurrent CPU bus and memory bus operations.

***Configurations:...
***Features:...
**
**Later chipsets (basic spec):
**440 series:
***440FX (Natoma)       05/06/96...
***440LX (Balboa)       08/27/97...
***440BX (Seattle)      c:Apr'98...
***440DX (?)            c:?...
***440EX (?)            c:Apr'98...
***440GX (Marlinespike) 06/29/98...
***440ZX & 440ZX-66 (?) 01/04/99...
***440ZX-M (?)          05/17/99...
***440MX (Banister)     05/17/99...
**450NX  (?)            06/29/98:...
**?????  (Profusion)    c:99...
**800 series...
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**SL82C550   'Rossini' Pentium          [no datasheet]            c:95
***Notes:
from:
http://www.os2forum.or.at/english/info/os2hardwareinfo/pci_chips.html

The Symphony  "Rossini" Chipset  (Symphony Labs:  10AD/4269) (9/13/95)
This is apparently a low-cost alternative to the Triton chipset, as it
operates  with up  to 66  MHz external  clock rates,  up to  two CPUs,
pipelined or non-pipelined, synchronous or [conventional] asynchronous
SRAM cache,  EDO RAM, and  does dual-port busmastering IDE.   It will,
apparently, adjust the voltages to  its various (CPU, PCI, cache, RAM)
buses  to suit  their requirements,  and will  control up  to six  PCI
masters.   It consists  of the  SL82C551 cache/memory  controller, the
SL82C522 data path controller, and the SL82C555 system I/O controller.

***Configurations:...
**
**Support Chips:
**SL82C365    Cache Controller (for 386DX/SX)                     c:91...
**SL82C465    Cache Controller (for 486/386DX/SX)                 c:91...
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