User`s guide

DWMBB Adapter
3.2 Address Translation
The DWMBB is an XMI-to-VAXBI adapter for systems that support
30 bits or more of address space. Figure 3–2 shows the VAXBI I/O
address space for XMI node 1.
Figure 3–2 VAXBI I/O Address Space for XMI Node 1
XMI NODE 1 VAXBI
32−bit Addr. Address (hex) VAXBI I/O Address Space
0000
2000
4000
0000
2000
4000
Device
8 Kbytes
VAXBI Device
Registers
128 Kbytes
Multicast
Space
.
Boot ROM Space
Adapter
Window
Space 0
Assignable Window
msb−p083−91
E200
E200
E200
2000
2000
2000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
Device 1
8 Kbytes
.
Adapter
Window
Space 1
E201 E000 2001 E000
0000 0000
Device 2
8 Kbytes
Adapter
Window
Space 15
E202
E204
E206
E240
E244
2002
2004
2006
2040
2044
Device 15
8 Kbytes
Space
E27C 0000 207C 0000
Reserved
128 Kbytes
E280 2080
256 Kbytes
E3FF FFFF 21FF FFFF
Reserved
3.5 Mbytes
256 Kbytes
256 Kbytes
256 Kbytes
3–4