User`s guide

The XMI
2.2.2.5 How to Find a Register in VAXBI Address Space
The first part of a VAXBI adapter’s physical XMI address depends on
which XMI slot the DWMBB/A module occupies. The second part of the
address depends on the adapter’s VAXBI node number, which is shown in
the SHOW CONFIGURATION display.
NOTE: VAXBI slot and node numbers are not identical. The placement
of the VAXBI node ID plug on the backplane determines the node
ID, so seeing that a particular option is in a certain slot does
not guarantee that the slot and node number are identical. Use
the VAXBI node identification from the SHOW CONFIGURATION
command.
Determining which XMI slot the DWMBB/A occupies can be done in two
ways:
• Identify the DWMBB/A module in the XMI card cage and determine
which slot it occupies. (Numbering of slots on the XMI is from right to
left from slot 1 to slot E.)
• Enter the SHOW CONFIGURATION command at the console.
A typical response is shown below.
>>> SHOW CONFIGURATION
Type Rev
1+ KA65A (8080) 0006
2+ KA65A (8080) 0006
6+ MS65A (4001) 0002
7+ MS65A (4001) 0002
8+ MS65A (4001) 0002
9+ MS65A (4001) 0002
C+ KDM70 (0C22) 00FF
D+ DEMNA (0C03) 0601
E+ DWMBB/A (2002) 0002
XBI E
1+ DWMBB/B (2107) 0007
4+ DMB32 (0109) 210B
6+ TBK70 (410B) 0307
Assume that you want to examine the Device Register (DTYPE) for the
DMB32, which is node 4 in the VAXBI channel shown above (XBI E).
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