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**440 series:
***440FX (Natoma)       05/06/96...
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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...
*TI (Texas Instruments)...
*UMC...
**UM82C230     286AT MORTAR Chip Set                               <91
***Info:...
***Configurations:...
***Features:
o   Fully PC/AT-Compatible for 10MHz and 12MHz systems.
o   Guaranteed zero wait state for 80ns DRAMs at 12MHz and one wait 
    state for 120ns DRAMs at 12.5MHz.
o   Supports up to 4MB local memory on board.
o   Remaps 384KB of top of system local memory space.
o   Supports 1M/256K SIM module.
o   Supports 12MHz operation with one wait state for 200ns EPROM.
o   Commercially available BIOS (Phoenix/Award/AMI) applicable.
o   Easy design system board, three VLSI chips and eight TTLs 
    configure all the logic.
o   Landmark speed=15.9MHz operating at 12MHz, 16.5MHz operating at
    12.5MHz.

**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...
**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...
**UM82c45x     Serial/Parallel chips                                 ?...
**Other chips:...
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