Installation guide

Addressing 2-7

2.4 VAXBI Addresses

To examine a VAXBI register from the VAX 7000 console (see Example

2-1), you need three pieces of information:

1. The XMI number (0–3) to which the VAXBI bus is connected.

2. The base address of the VAXBI node (see Table 2-5).

3. The offset of the VAXBI register to be examined (see Table 2-6).

The address of the register to be examined is expressed in this form:

xmi

:220

xxyyy

where: n = the XMI number

xx = the base address of the VAXBI node

yyy = the address offset of the VAXBI register

To calculate the address of the VAXBI register, add 2200 0000 plus the

base address of the VAXBI node (Table 2-5) plus the address offset of the

VAXBI register (Table 2-6).

NOTE: You must look at the node ID plug on the backplane of the VAXBI

card cage to determine the node ID of the VAXBI option.

Example 2-1 Examining the Device Register of VAXBI Node 7

>>> e xmi1:2200E000

xmi1: 2200E000 131C010E

>>>