User`s guide

DWMBB Adapter
3.4.1 DWMBB-Detected Error Interrupt Vectors
DWMBB-detected error interrupts return vectors from the DWMBB/B
module Vector Register (BVR) in response to an XMI IDENT transaction.
The vectors are in the format shown in Figure 3–8. The operating system
loads a vector value into BVR at system initialization.
Figure 3–8 XMI Vector Format
1
5210
VECTOR (BVR)
msb−p089−89
MBZ
3.4.2 VAXBI Node Vector
The VAXBI nodes return an interrupt vector without offsettable vectors.
VAXBI vector <15:9> is always zero. The XMI vector <15:9> is assigned a
value by the operating system during initialization. This nonzero offset,
loaded into the Vector Offset Register (BVOR) by software, is concatenated
with bits <8:2> of the vector returned by the VAXBI node. This new value
is returned to the XMI commander. Figure 3–9 is an example of VAXBI
vectors.
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