Altera Nios II User Manual page 280

8–100
wrctl
Operation:
Assembler Syntax:
Example:
Description:
Exceptions:
Instruction Type:
Instruction Fields:
31 30 29 28 27 26 25
A
Nios II Processor Reference Handbook
ctlN ← rA
wrctl ctlN, rA
wrctl ctl6, r3
Writes the value contained in register rA to the control register ctlN.
Supervisor-only instruction
R
A = Register index of operand rA
N = Control register index of operand ctlN
24 23 22 21 20 19 18 17
0 0
16 15 14 13 12 11 10 9
0x2e
Chapter 8: Instruction Set Reference
Instruction Set Reference
write to control register
8 7 6 5 4 3 2 1
N 0x3a
February 2014 Altera Corporation
0