HelenOS sources

CR_TE             897 uspace/drv/nic/rtl8139/driver.c 	pio_write_8(io_base + CR, cr_value | CR_TE | CR_RE);
CR_TE             443 uspace/drv/nic/rtl8169/driver.c 	pio_write_8(rtl8169->regs + CR, cr_value | CR_TE | CR_RE);
CR_TE             739 uspace/drv/nic/rtl8169/driver.c 	cr |= CR_TE | CR_RE;
HelenOS homepage, sources at GitHub