; R0L contains byte to swap bit-endianness of.
    ; R0H will contain the swapped byte.

    lsr    R0     ; b(n)->b(n-1), b0->Carry
    lsl    R1     ; Carry->b0, b(n)->b(n+1}
    lsr    R0	
    lsl    R1	
    lsr    R0
    lsl    R1
    lsr    R0
    lsl    R1
    lsr    R0
    lsl    R1
    lsr    R0
    lsl    R1
    lsr    R0
    lsl    R1
    lsr    R0
    lsl    R1