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Instruction Set 9-117
mtdcr
Move To Device Control Register
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
Invalid DCRF values
Programming Note
Execution of this instruction is privileged.
The DCR number (DCRN) specified in the assembler language coding of mtdcr refers to a DCR
number. The assembler handles the unusual register number encoding to generate the DCRF field.
Architecture Note
This instruction is implementation-specific and may not be portable to other implementations.
mtdcr DCRN, RS
31 RS DCRF 451
0 6 11 21 31