MCI_GPM_COEX_B_GPM_OPCODE
(*(((u_int8_t *)(_p_gpm)) + MCI_GPM_COEX_B_GPM_OPCODE) & 0xff)
*(((u_int8_t *)(_p_gpm)) + MCI_GPM_COEX_B_GPM_OPCODE) = (_opcode) & 0xff; \