- extern serial_addbyte
- extern serial_addbyte_another
- extern serialtx_intrl
- extern serialtxfc_init
- extern serialtxbuf_init
- extern portb_read
+ extern serial_addbyte
+ extern serial_addbyte_another
+ extern serialtx_intrl
+ extern serialtxfc_init
+ extern serialtxbuf_init
+ extern portb_read