User`s guide

DWMBB/A Module Registers
Return Vector Register (ARVR)
Return Vector Register (ARVR)
The DWMBB returns the vector in ARVR<15:2> when the module either
receives an unsolicited IDENT or receives an IDENT that fails on the VAXBI.
This feature of the DWMBB is controlled by the Return Vector Disable bit in
the Control and Status Register (ACSR <1>). When the Return Vector Disable
bit is set, the DWMBB responds with an RER.
ADDRESS
XMI nodespace base address + 0000 0028
3
1
1
6
1
5210
MUST BE ZERO DWMBB Vector
msb−p110−89
MBZ
bits<31:16>
Name: Reserved
Mnemonic: None
Type: RO, 0
Reserved; must be zero.
bits<15:2>
Name: DWMBB Vector
Mnemonic: None
Type: R/W, 0
DWMBB Vector is loaded by software at system initialization. The
same value should be placed in the Vector Register (BVR) on the
DWMBB/B module.
bits<1:0>
Name: Reserved
Mnemonic: None
Type: RO, 0
Reserved; must be zero.
3–91