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Conference 7.286::multia

Title:Multia
Moderator:ONTIME::SYSTEM
Created:Tue Oct 04 1994
Last Modified:Tue Jun 03 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:782
Total number of notes:3413

766.0. "jumper settings for CPU speed ?" by LNZALI::BACHNER (Mouse not found. Click OK to continue) Wed Mar 19 1997 05:56

The Multia Service Information handbook (EK-MULTS-IN.C01) carefully lists the
jumpers responsible for speed selection. While there is a complete table for the
Alpha-based Multias (up to 300 MHz), the Intel related information just mentions:

	W2	off	Host bus frequency
	W4	on	Host clock speed select
	W5	off	Host clock speed select
	W7	1 to 2	ISA clock speed select

These settings are apparently correct for the 100 MHz CPU. Does anybody know
about other valid settings ?

Thanks for your help,
Hans.
T.RTitleUserPersonal
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766.1Got this from Engineering years back fron nowSUTRA::MAHIEUXThu Mar 20 1997 09:5343
    The table below summarizes the jumpers on the VX51B motherboard:
    
        Reference Designator            VX51B-F2/F3	Setting Description 
    
        --------------------            -------- 	-------------------
    
         W2 (Host Frequency)               OFF   	BF signal on
                                                        Pentium.  Sets
                                                        the Bus-to-Core
                                                        Frequency
    						to 1/2 when ON and 2/3 whenOFF.
    
         W3 (Pentium Pipelining)           ON   	NA signal on Pentium.  
                                                       Indicates memory system 
                                                       supports pipelinedcycles.
    
         W4 (Host Bus Speed)               ON  	   W4 and W5 set Bus Frequency
         W5 (Host Bus Speed)               OFF 	   50 MHz (ON,ON), 
                                                   60 Mhz (OFF,ON) 
    						   66 MHz (ON,OFF). 
    
         W6 (CMOS Mode)                    OFF 	Use to clear the RTC CMOS.
    						OFF = normal mode, 
    						ON = clear RTC CMOS.
    
         W7 (ISA Clock Speed)              ON 3-to-2   Sets the ISA Bus frequency.
    					   ON 1-to-2 = ISA frequency
    						       is 1/4 PCI frequency.  
    					   ON 3-to-2 = ISA frequency
    						       is 1/3 PCI frequency.
    
         W8 (Bios Boot Block               ON 3-to-2   Ability to program Flash
             Programming Mode)			       Boot Block area. 
       					   ON 3-to-2 = normal mode (unable to 
    						       overwrite boot block).
    
    
    
    Hoping this will help you.
    
    Best Regards , 
    
    Thierry Mahieux 
766.2LNZALI::BACHNERMouse not found. Click OK to continueThu Mar 20 1997 14:143
Thanks a lot, Thierry !

Hans.
766.3KERNEL::PARRYTrevor ParryFri Apr 18 1997 06:497
    Could someone clarify please....which motherboard jumpers should be set
    if the CPU on an Intel Multia is upgraded from 100 Mhz to 133 Mhz ? 
    Previous replies suggest W4 on and W5 off.  Is this correct ?  What
    about W2 ?
    
    Thanks
    /tmp
766.4Jumper settings for 133MHZGWEN::KAUFMANEngineering MGR Xterminals and MultiaTue Apr 22 1997 17:5012
	The jumper settings for 133MHZ should be:

	W2 ON
	W3 ON
	W4 ON
	W5 off
	W6 off
	W7 1-2
	W8 2-3

	Hope this helps,
	Joel