SERIAL_LINE_STATUS
while ((in8(sSerialBasePort + SERIAL_LINE_STATUS) & 0x20) == 0) {
uint8 lineStatus = in8(sSerialBasePort + SERIAL_LINE_STATUS);
uint8 lineStatus = in8(sSerialBasePort + SERIAL_LINE_STATUS);
while ((in8(sSerialBasePort + SERIAL_LINE_STATUS) & 0x20) == 0) {