68000 - 68k -- Why is this loading FF? -

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i've been trying figure out why program loads ff d1. here code:

    org    $1000  start:     move.b      pattern,d1     simhalt  pattern     equ     $aa50      end    start

my thoughts pattern in hex. it's word. i'm moving least significant byte of pattern d1. least significant byte 50 in hex, 01010000 in binary. expect d1 contain $00000050 instead contains $000000ff. i'm @ loss. ff 11111111 in binary (obviously) not 01010000.

any appreciated. i'm using easy68k.

looks you're loading in ff address $0000aa50. that's guess, i'll try out see if case. 

**-----------------------------------------------------------------------------      org    $1000  start:      move.b #pattern,d1  ;declare pattern                         ;hexadecimal using #     simhalt  pattern equ $aa50       ;errror:this exceed 8 bits                         ;else use move.w  *pattern equ $50        ;this works using move.b  end    start  **-----------------------------------------------------------------------------

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