HelenOS sources
CR_RST 237 uspace/drv/nic/rtl8139/defs.h pio_write_8(base_port + CR, CR_RST);\
CR_RST 238 uspace/drv/nic/rtl8139/defs.h while((pio_read_8(base_port + CR) & CR_RST) != 0);\
CR_RST 436 uspace/drv/nic/rtl8139/driver.c pio_write_8(io_base + CR, CR_RST);
CR_RST 438 uspace/drv/nic/rtl8139/driver.c while (pio_read_8(io_base + CR) & CR_RST) {
CR_RST 766 uspace/drv/nic/rtl8169/driver.c pio_write_8(rtl8169->regs + CR, CR_RST);
CR_RST 768 uspace/drv/nic/rtl8169/driver.c while (pio_read_8(rtl8169->regs + CR) & CR_RST) {
HelenOS homepage, sources at GitHub