Xylogics 781 VME Serial Multiplexer Board Jumpers

Jumper  Purpose                 Setby
------  -------                 -----
JA      Crystal Speed           User
JB      VMEBus Addr             Solbourne Factory
JC      VMEBus Addr             Solbourne Factory
JD      VMEBus Addr             User
JE      Bus Grant               Solbourne Factory
JF      Bus Grant               Solbourne Factory
JG      Bus Grant               Solbourne Factory
JH      Crystal Speed/Diag      User
JJ      ROM Size                Solbourne Factory


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DEFAULT JUMPING
JA 1-2 jumped
JB : All jumped
JC : 8/11 jumped
JD : NO jumpers
JE : 12 jumped
JF/JG :
	JF 8 jumped, JG 4 jumped
	JF/JG straddle jumpered on 7/11, 6/10, 5/9
JJ : 2-3 jumped


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Setting Line Rate

        Line Rate    Jumpers
        ---------    -------
        0            JA: 2-3
                     JH: no jumper on 1-2

        1            JA: 1-2
                     JH: 1-2

Using Line Rate 0 gives you Bauds of 50-19200, Using Line Rate 1 gives
you Bauds of 100-38400 (obviously you want this setting in most cases)


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Board Number Settings

These addresses are set on Jumper "JD" by the following table:

Board Number	Address		Pin 4	Pin 5	Pin 6	Pin 7
0		0x0620		in	out	in	in
1		0x0640		in	in	out	in
2		0x0660		in	out	out	in
3		0x0680		in	in	in	out

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