Owner`s manual

3.2 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’sVAXBInode 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.
The XMI slot number can be determined in two ways:
• By looking at the XMI card cage (numbering of slots is shown in
Figure 3–1)
• By entering at the console a SHOW CONFIGURATION command
A typical response is shown below.
>>> SHOW CONFIGURATION
Type Rev
1+ KA65A (8080) 0006
2+ KA65A (8080) 0006
6+ MS65A (4001) 0084
7+ MS65A (4001) 0084
8+ MS65A (4001) 0084
9+ MS65A (4001) 0084
B+ DEMNA (0601) 0003
C+ KDM70 (0C22) 0001
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).
To get the address for the DMB32 Device Register (DTYPE), do the
following:
1. From Table 3–1, XMI Nodespace Addresses, find XMI node E and take
the first two digits for that node’s window space (FC).
3–6 VAX 6000 Model 500 Mini-Reference