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mfdcr
Move from Device Control Register
Preliminary PPC440x5 CPU Core User’s Manual
instrset.fm.
September 12, 2002 Page 361 of 589
mfdcr
Move from Device Control Register
DCRN ← DCRF
5:9
|| DCRF
0:4
(RT) ← (DCR(DCRN))
The contents of the DCR specified by the DCRF field are placed into register RT.
If instruction bit 31 contains 1, the contents of CR[CR0] are undefined.
Registers Altered
•RT
Invalid Instruction Forms
• Reserved fields
Programming Notes
Execution of this instruction is privileged.
The DCR number (DCRN) specified in the assembler language coding of the mfdcr instruction refers to a
DCR number. The assembler handles the unusual register number encoding to generate the DCRF field.
Architecture Note
The specific numbers and definitions of any DCRs are outside the scope of both the PowerPC Book-E archi-
tecture and the PPC440x5 core. Any DCRs are defined as part of the chip-level product incorporating the
PPC440x5 core.
mfdcr RT, DCRN
31 RT DCRF 323
0 6 11 21 31