So far i get these bits
       //I immed/immbit 0 means operand2 is register
	  //I immed/immbit 1 means operand1 is immediate value
	  //P pre/post index bit  0 = add offset after transfer , 1 = add offset after transfer
	  //U Up/Down bit  0 = subtract offset  from base , 1 = add offset to base
	  //S PSR bit 0 = don't load PSR , 1 = load PSR
	  //W 0=no writeback , 1=write address into base
	  //L Load/Store bit 0 = Store to memory , 1 = Load from memory