Registers
http://www.motorola.com/computer/literature 2-103
2
The MPIC Memory Base Address Register (MMBAR) controls the
mapping of the MPIC control registers in PCI memory space.
IO/MEM IO Space Indicator. This bit is hard-wired to a logic zero
to indicate PCI memory space.
MTYPx Memory Type. These bits are hard-wired to zero to
indicate that the MPIC registers can be located anywhere
in the 32-bit address space.
PRE Prefetch. This bit is hard-wired to zero to indicate that the
MPIC registers are not prefetchable.
BASE Base Address. These bits define the memory space base
address of the MPIC control registers. Th e MBASE
decoder is disabled when the BASE value is zero.
PCI Slave Address (0,1,2, and 3) Registers
Offset PSADD0 - $80
PSADD1 - $88
PSADD2 - $90
PSADD3 - $98
Bit 3
13
02
92
82
72
62
52
42
32
22
12
01
91
81
71
61
51
41
31
21
11
09876543210
Name PSADDx
START END
Operation R/W R/W
Reset $0000 $0000