[BippyM]

Again I will be returning to these posts if needed

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    move.<size>    source,destination

The move command simply moves data from source to destination

example

    move.b    #10,d0

Moves 10 into the lower 8 bits of register d0

the following flags are affected by the move command N, Z, V, C

the Z & N flags are set while the C and V flags are cleared.

Here is a simple asm program using the move command to copy the contents of a memory location to another. Not all commands have been discussed yet but they will be later so stick with it

    move.b    X,d0    Copy contents of X into d0
    move.b    d0,Y    Copy contents of d0 to Y
    rts       end

X    dc.b    10    set X to 10
Y    ds.b    1    Allocate 1 byte of memory

This program basically sets a memory location to 10 (X) and reserves memory for it to be copied to (Y). It then uses register d0 as a temporary storage. It then copies the contents of X to d0 and then from d0 to Y.

A simpler way would be

    move.b    X,Y    Copy contents of X directly to Y
    rts       end

X    dc.b    10    set X to 10
Y    ds.b    1    Allocate 1 byte of memory

Memory could be initialised and then the value copied directly. When taking this approach the data requires a # symbol placing in front of it

    move.l    #10,X    Copy 10 into X
    move.l    X,Y    Copy contents of X to Y
    rts        end

X    dc.l    1    Allocate 1 long of memory
Y    ds.l    1    Allocate 1 long of memory

Address registers can be used instead of data registers but the move command cannot be used. A special form must be used which is the movea command. To copy data from an address register the normal move command can be used. Moving data into an address register wont affect the SR