started working on AtMega8515 module C1.

avr/modules/flash/io_bitbang.asm

@@ -281,7 +281,7 @@ ioRawReceiveByte_error:
 ; @clobbers R16, R22 (R17, R21, X)
 
 ioRawSendPacket:
-  rcall ioRawAcquireBus
+  rcall ioRawAcquireBus                   ; (none)
   brcc ioRawSendPacket_lineBusyError
   
   rcall ioRawWaitForOneBitLength          ; wait for one bit duration (R22)
@@ -316,47 +316,6 @@ ioRawSendPacket_lineBusyError:
 
 
 
-; ---------------------------------------------------------------------------
-; @routine ioRawAcquireBus
-;
-; Reserve bus if free (otherwise return error)
-; Expects interrupts to be disabled.
-;
-; @return CFLAG set if okay (bus acquired), cleared on error
-; @clobbers: none
-
-ioRawAcquireBus:
-  ; check for ATTN line: busy?
-  cbi COM_ATTN_DDR, COM_ATTN_PIN                 ; set ATTN as input
-  cbi COM_ATTN_OUTPUT, COM_ATTN_PIN              ; disable pullup on ATTN
-  nop                                            ; needed to sample current input
-  sbis COM_ATTN_INPUT, COM_ATTN_PIN              ; ATTN low?
-    rjmp ioRawAcquireBus_busy                    ; jump if it is
-  sbi COM_ATTN_DDR, COM_ATTN_PIN                 ; set ATTN as output
-  cbi COM_ATTN_OUTPUT, COM_ATTN_PIN              ; set ATTN low
-  sec
-  ret
-ioRawAcquireBus_busy:
-  clc
-  ret
-; @end
-
-
-
-; ---------------------------------------------------------------------------
-; @routine ioRawWaitForOneBitLength
-;
-; wait for one bit length (minus cycles for call and ret).
-;
-; @clobbers r22
-
-ioRawWaitForOneBitLength:
-  Utils_WaitNanoSecs COM_BIT_LENGTH, 7, r22       ; wait for one bit duration (minus RCALL/RET)
-  ret
-; @end
-
-
-
 ; ---------------------------------------------------------------------------
 ; @routine ioRawSendByte
 ;