/* LDRB<c> <Rt>,[<Rn>,#-<imm8>] => 1111 1000 0001 rrrr
LDRB<c> <Rt>,[<Rn>],#+/-<imm8> => 1111 1000 0001 rrrr
LDRB<c> <Rt>,[<Rn>,#+/-<imm8>]! => 1111 1000 0001 rrrr */
/* LDRB<c> <Rt>,[<Rn>,#-<imm8>] => 1111 1000 0001 rrrr
LDRB<c> <Rt>,[<Rn>],#+/-<imm8> => 1111 1000 0001 rrrr
LDRB<c> <Rt>,[<Rn>,#+/-<imm8>]! => 1111 1000 0001 rrrr */