diff --git a/avr/modules/uart_hw/lowlevel_tty.asm b/avr/modules/uart_hw/lowlevel_tty.asm
index 8d270e6..a488ca5 100644
--- a/avr/modules/uart_hw/lowlevel_tty.asm
+++ b/avr/modules/uart_hw/lowlevel_tty.asm
@@ -111,24 +111,6 @@ UART_HW_TtyOn1_StopTx:
 
 
 
-; ---------------------------------------------------------------------------
-; @routine UART_HW_TtyOn1_RecvSkipMessage
-;
-; skip all receiption data until a data pause of about 10ms
-;
-; @clobbers r16
-
-UART_HW_TtyOn1_RecvSkipMessage:
-UART_HW_TtyOn1_RecvSkipMessage_loop:
-    rcall ttyOn1RecvFlush            ; (r16)
-    ; wait for a data pause of 10ms
-    rcall ttyOn1RecvByteWithin10ms   ; (r20, r22)
-  brcs UART_HW_TtyOn1_RecvSkipMessage_loop
-  ret
-; @end
-
-
-
 ; ---------------------------------------------------------------------------
 ; @routine UART_HW_TtyOn1_RxCharIsr @global
 ;
@@ -181,101 +163,6 @@ UART_HW_TtyOn1_TxCharIsr_end:
 
 
 
-; ---------------------------------------------------------------------------
-; @routine ttyOn1RecvFlush
-;
-; Flush receiption buffer.
-;
-; @clobbers r16
-
-ttyOn1RecvFlush:
-    lds r16, UCSR1A ; read status
-    sbrs r16, RXC1
-    ret
-    lds r16, UDR1   ; read data byte
-  rjmp ttyOn1RecvFlush
-; @end
-
-
-
-; ---------------------------------------------------------------------------
-; @routine ttyOn1RecvByteWithin10ms
-;
-; Wait up to 10ms for incoming byte and read it.
-;
-; @return CFLAG set if okay (data available), cleared on error
-; @return r16 byte received (if CFLAG set)
-; @clobbers: r20, r22
-
-ttyOn1RecvByteWithin10ms:
-  rcall ttyOn1WaitForData10ms                   ; (R20, R22)
-  brcc ttyOn1RecvByteWithin10ms_end
-  lds r16, UCSR1A                              ; check for errors
-  andi r16, (1<<FE1) | (1<<DOR1) | (1<<UPE1)
-  brne ttyOn1RecvByteWithin10ms_error
-  lds r16, UDR1                                ; read data byte
-  sec
-  ret
-ttyOn1RecvByteWithin10ms_error:
-  clc
-ttyOn1RecvByteWithin10ms_end:
-  ret
-; @end
-
-
-
-; ---------------------------------------------------------------------------
-; @routine ttyOn1WaitForData10ms
-;
-; Wait for incoming data for max 10 milliseconds.
-;
-; @return CFLAG set if okay (data available), cleared on error
-; @clobbers: r20, r22
-
-ttyOn1WaitForData10ms:
-.if clock == 8000000
-  ldi r20, 80
-.endif
-.if clock == 1000000
-  ldi r20, 10
-.endif
-ttyOn1WaitForData10ms_loop:
-    push r20
-      rcall ttyOn1WaitForData1000Cycles  ; (r20, r22)
-    pop r20
-    brcs ttyOn1WaitForData10ms_gotit
-    dec r20
-  brne ttyOn1WaitForData10ms_loop
-  clc
-ttyOn1WaitForData10ms_gotit:
-  ret
-; @end
-
-
-
-; ---------------------------------------------------------------------------
-; @routine ttyOn1WaitForData1000Cycles
-;
-; Wait for incoming data for max 1000 clock cycles
-; (about 1ms at 1MHz, 0.125 at 8MHz)
-;
-; @return CFLAG set if okay (packet received), cleared on error
-; @clobbers: r20, r22
-
-ttyOn1WaitForData1000Cycles:
-  ldi r20, 140                         ; 1
-ttyOn1WaitForData_loop:
-    lds r22, UCSR1A                    ; 2
-    sbrc r22, RXC1                     ; 2/3
-      rjmp ttyOn1WaitForData_gotit     ; 2
-    dec r20                            ; 1
-  brne ttyOn1WaitForData_loop           ; 1/2  -> 7 per loop, max about 1000
-  clc                                  ; 1
-  ret                                  ; 4
-ttyOn1WaitForData_gotit:
-  sec                                  ; 1
-  ret                                  ; 4
-; @end