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Data Cache
Bits 3, 8, and 9—Reserved
These bits are reserved and must be set to 0.
CMD—Command
The following commands can be written to the CMD field to control and configure the data
cache. The machine must be in privilege mode (MSR
0000 = Reserved.
0010 = Data Cache ENABLE .
0100 = Data Cache DISABLE .
0110 = LOCK LINE .
1000 = UNLOCK LINE .
1010 = UNLOCK ALL .
1100 = INVALIDATE ALL .
1110 = FLUSH Data Cache LINE .
0001 = SET FORCE WRITETHROUGH MODE .
0011 = CLEAR FORCE WRITETHROUGH MODE .
0101 = SET LITTLE-ENDIAN SWAP MODE .
0111 = CLEAR LITTLE-ENDIAN SWAP MODE .
Others = Reserved.
CCER1—Data Cache Error Type 1
This field is sticky and set by the hardware. It is read-only and cleared when read.
0 = No Error.
1 = Error.
CCER2—Data Cache Error Type 2
This field is sticky and set by the hardware. It is read-only and cleared when read.
0 = No Error.
1 = Error.
CCER3—Data Cache Error Type 3
This field is sticky and set by the hardware. It is read-only and cleared when read.
0 = No Error.
1 = Error.
Bits 13–31—Reserved
These bits are reserved and must be set to 0.
10-6
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MPC823e REFERENCE MANUAL
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MOTOROLA
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