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    Description:

    This instruction makes a copy of one register pair into another register pair. The source register pair Rr+1:Rr is left unchanged, while the destination register pair Rd+1:Rd is loaded with a copy of Rr + 1:Rr.

    This instruction is not available in all devices. Refer to the device specific instruction set summary.

    Operation:

    (i) Rd+1:Rd ← Rr+1:Rr

    Syntax: Operands: Program Counter:

    (i) MOVW Rd+1:Rd,Rr+1Rr d E {0,2,...,30}, r E {0,2,...,30} PC ← PC + 1

    16-bit Opcode:

    0000

    0001

    dddd

    rrrr

    Status Register (SREG) and Boolean Formula:

    I

    T

    H

    S

    V

    N

    Z

    C

    -

    -

    -

    -

    -

    -

    -

    -

    Example: 

    movw r17:16,r1:r0 ; Copy r1:r0 to r17:r16
call check ; Call subroutine
...
check: cpi r16,$11 ; Compare r16 to $11
...
cpi r17,$32 ; Compare r17 to $32
...
ret ; Return from subroutine

    Words: 1 (2 bytes)

    Cycles: 1

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