Motorola MVME2300 Series 用户手册

Functional Description

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4-17

1. Manually call each Universe initialization word, to duplicate typical 

operation.

With the LSI0 enabled, the registers are:
   

CTL        BS       BD       TO

 80821000 1012000 21012000 3efee000

2. Execute a bye command.

3. Manually enable access to the Universe register set, and read the 

LSI0 registers:
   

CTL        BS       BD       TO

 80820000    0     20000000    0

This means that the PCI reset has changed the image as follows:

– From supervisor address modifier to user

– From PCI space base address 1012000 to 0 (size of 2000.0000 

constant)

– From VME address range 4000.0000 through 5FFF.FFFF to a 

new VMEbus range of 0 through 1FFF.FFFF

It is still enabled.

In this example, portions of the earlier example are repeated on an 
MVME3600 series board. This particular board had customized values for 
the LSI0 setup parameters. It had not previously been seen to hang upon 
PCI reset.

Conditions:

The Universe register init code is still disabled, and must be manually 
called. The PCI init code is enabled, so the Universe PCI memory space 
requirement defined by its Configuration Space register at offset 0x10 is 
being accommodated and enabled during PCI probing. The PCI probe list 
is set to d,c,e,f,10.

Procedure:

1. After a power-up reset, before the init code has written the registers, 

the LSI0 register settings are: