6 /* dff030 is REG_SERDAT
7 * dff018 is REG_SERDATR
8 * bit 13 of SERDATR is TBE (transmit buffer empty)
10 #define ser_putchar(c) \
12 "or.w #0x100, %0\n\t" \
13 "0: btst #13, 0xdff018\n\t" \
15 "move.w %0, 0xdff030\n\t" \
18 void ser_init(int baud);
19 void ser_print(const char *s);
21 #endif /* SERIAL_H_ */