User`s guide

DWMBB/A Module Registers
Utility Register (AUTLR)
Utility Register (AUTLR)
The Utility Register contains fields for the software programmable selection of
timeout values and for moving the VAXBI Window Address Space to an I/O
address range other than the power-up or reset default value.
ADDRESS
XMI nodespace base address + 0000 0020
3
1
2
8
2
7
2
4
2
3
2
0
1
9
1
8
1
7
1
4
1
30
MBZ VAXBI Window Space
Mapping Register Mode Enable (MR MD)
Timeout Limit (TLIM)
Lockout Deassertion (LDEASRT)
Lockout Limit (LLIM)
msb−p108−89
bits<31:28>
Name: Lockout Limit
Mnemonic: LLIM
Type: R/W, 4 (hex)
Lockout Limit determines the maximum number of consecutive
IREADs that the DWMBB retries before it asserts the XMI LOCKOUT
L signal. The default value loaded into this field at power-up and at
node reset is 4 (hex). Software can load the field with a value between
0 and F (hex) at system initialization. The values for this field are as
follows:
LLIM (hex) IREAD Attempts
01
11
22
33
4 4 (default)
55
66
77
88
99
A10
3–81