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mtdcr
Move To Device Control Register
PPC440x5 CPU Core User’s Manual Preliminary
Page 368 of 589
instrset.fm.
September 12, 2002
mtdcr
Move To Device Control Register
DCRN ← DCRF
5:9
|| DCRF
0:4
(DCR(DCRN)) ← (RS)
The contents of register RS are placed into the DCR specified by the DCRF field.
If instruction bit 31 contains 1, the contents of CR[CR0] are undefined.
Registers Altered
• DCR(DCRN)
Invalid Instruction Forms
• Reserved fields
Programming Note
Execution of this instruction is privileged.
The DCR number (DCRN) specified in the assembler language coding of the mtdcr 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.
mtdcr DCRN, RS
31 RS DCRF 451
0 6 11 21 31