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**?????  (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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**82C498         DXWB PC/AT chipset [no datasheet]                   ?
***Notes:...
**82C499         DXSC DX System Controller                        c:93...
**82C546/547     Python PTM3V                                     c:94...
**82C556/7/8     Viper [no datasheet]                                ?...
**82C556/7/8N    Viper-N  Viper Notebook Chipset             <05/25/95...
**82C556M/7M/8E  Viper-N+ Viper Notebook Chipset                  c:96...
**82C566/7/8     Viper-Max Chipset Scalable MultiMedia PC Solution   ?...
**82C571/572     486/Pentium                                      c:93...
**82C576/7/8     Viper Xpress  [no datasheet]                        ?...
**82C576/8/9     Viper XPress+ [no datasheet, some info]     <01/16/97...
**82C596/597     PTMAWB Pentium Adaptive Write-back (Cobra)       c:93...
**82C650/1/2     Discovery (Pentium Pro) [no datasheet]              ?...
**82C681/2/6/7   386/486WB EISA                                   c:92...
**82C683         386/486AWB EISA [no datasheet]                      ?...
**82C693/6/7     Pentium uP Write Back Cache EISA                 c:93...
**82C700         FireStar                                         c:97...
**82C701         FireStar Plus                                    c:97...
**82C750         Vendetta      [no datasheet]                        ?...
**82c801         SCWB2 DX Single Chip Solution                    c:92...
**82C802         SCWB2 PC/AT Single Chip [no datasheet]              ?...
**82C802G/GP     System/Power Management Controller (cached)      c:93...
**82C895         System/Power Management Controller (cached)   c:Sep94...
**82C898         System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2       Buffer Devices                                 <Nov94...
**82C822         PCIB (VLB-to-PCI bridge)                         c:94...
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**SL82C465    Cache Controller (for 486/386DX/SX)                 c:91
***Info:
The SL82C465 cache controller supports both 1X and 2X clock modes. The
1X clock  mode means that the CCLK2  signal is used as  the CPU clock;
the 2X clock  mode means that the PCLK signal  (half the frequency and
the phase indicator  of CCLK2) is used as the  CPU clock. The SL82C465
and other CPU local bus devices run at the same clock frequency as the
CPU, while  the rest of the system  runs at the frequency  of PCLK. In
other words, the operating frequency of the system logic is either the
same (2X clock mode) or half the speed of the CPU (1X clock mode). For
the 1X clock mode, the timing of the signals between the CPU/Cache and
the system logic interface  is converted by the SL82C465 automatically
to  satisfy  the requirement  of  individual  clocks.  Table 1-1  [see
datasheet] lists  the operating frequencies  of the CPU local  bus and
the system logic with the oscillator used.

The 2X  clock mode is recommended  for a CPU frequency  no faster than
33Mhz because the system logic  is available at the targeted speed and
the  performance  is  slightly  better  than if  1X  clock  mode  were
used. For  a CPU  frequency faster  than 33Mhz, the  1X clock  mode is
preferred  for  486  systems  because  it  becomes  increasingly  more
difficult to  build a reliable  system with an oscillator  faster than
66Mhz.

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