Motorola MVME172 用户手册
Programming Model
http://www.mcg.mot.com/literature
4-21
4
IP_c or Double Size IP_cd Memory Base Address Registers
(Not used on 200/300-Series MVME172.)
IP_d Memory Base Address Registers
(Not used on 200/300-Series MVME172.)
IP_a, IP_b, IP_c, IP_d Memory Size Registers
As with the memory base address registers, the IP_a size register is also
used to control accesses to double size IP_ab and the IP_c size register is
used to control accesses to double size IP_cd.
used to control accesses to double size IP_ab and the IP_c size register is
used to control accesses to double size IP_cd.
The registers which control IP_c and IP_d are not used on the 200/300-
Series MVME172.
Series MVME172.
ADR/SIZ
$FFFBC008 and $FFFBC009 (8 bits each)
BIT
7
6
5
4
3
2
1
0
NAME($08)
c_BASE31
c_BASE30
c_BASE29
c_BASE28
c_BASE27
c_BASE26
c_BASE25
c_BASE24
NAME($09)
c_BASE23
c_BASE22
c_BASE21
c_BASE20
c_BASE19
c_BASE18
c_BASE17
c_BASE16
OPER
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RESET
0 R
0 R
0 R
0 R
0 R
0 R
0 R
0 R
ADR/SIZ
$FFFBC00A and $FFFBC00B (8 bits each)
BIT
7
6
5
4
3
2
1
0
NAME($0A)
d_BASE31
d_BASE30
d_BASE29
d_BASE28
d_BASE27
d_BASE26
d_BASE25
d_BASE24
NAME($0B)
d_BASE23
d_BASE22
d_BASE21
d_BASE20
d_BASE19
d_BASE18
d_BASE17
d_BASE16
OPER
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RESET
0 R
0 R
0 R
0 R
0 R
0 R
0 R
0 R