Memory Management Unit
11-44 MPC823e REFERENCE MANUAL MOTOROLA
MEMORY MANAGEMENT
11
UNIT
PS—Page Size
000 = 4K.
001 = 16K.
011 = 512K.
111 = 8M.
010 = Reserved.
100 = Reserved.
101 = Reserved.
110 = Reserved.
ASID—Address Space ID
This field represents the data TLB entry to be compared with the CASID field in the
M_CASID register.
SH—Shared Page
0 = This entry matches only if the ASID field in the data TLB entry matches the value
of the M_CASID register.
1 = ASID comparison is disabled for the entry.
SPV—Subpage Validity
Bit 28:
0 = Subpage 0 (address[20:21]=00) is not valid.
1 = Subpage 0 (address[20:21]=00) is valid.
Bit 29:
0 = Subpage 1 (address[20:21]=01) is not valid.
1 = Subpage 1 (address[20:21]=01) is valid.
Bit 30:
0 = Subpage 2 (address[20:21]=10) is not valid.
1 = Subpage 2 (address[20:21]=10) is valid.
Bit 31:
0 = Subpage 3 (address[20:21]=11) is not valid.
1 = Subpage 3 (address[20:21]=11) is valid.
To Next Page
Loading...
