Tooltron

#elif defined (__AVR_ATtiny1634__)

#define UCSRB           UCSR0B

#define UDR             UDR0

#define UDRE            UDRE0

#define TIMSK1          TIMSK

#define UCSZ1           UCSZ01

#define UPM0            UPM00

#define UPM1            UPM01

#define UCSRC           UCSR0C

#define SIG_UART_TRANS  USART0_TX_vect

#define SIG_USART_DATA  USART0_UDRE_vect