Answers for C18 and CCS follows:

First C18:
-----------
Generated C18 code:

00000    EF27     GOTO 0x1784e
  00002    F0BC     NOP
  00004    0012     RETURN 0
  1784E    EE1D     LFSR 0x1, 0xd00
  17850    F000     NOP
  17852    EE2D     LFSR 0x2, 0xd00
  17854    F000     NOP
  17856    6AF8     CLRF 0xff8, ACCESS
  17858    9C01     BCF 0x1, 0x6, ACCESS
  1785A    ECE9     CALL 0x175d2, 0
  1785C    F0BA     NOP
(and the relevant section:)
  1785E    EC03     CALL 0x6, 0
  17860    F000     NOP
  17862    EC63     CALL 0x170c6, 0
  17864    F0B8     NOP
  17866    D7FB     BRA 0x1785e

---  C:\MCC18\v3_39\src\traditional\stdclib\__init.c =20
--------------------------------------------
  00006    0012     RETURN 0

So the answer for C18 is:

The program calls the __init.c function (0x6), then calls the main=20
function (170c6).  If it exits (returns), then the _init.c function gets=20
called again, then the main() function.

On CCS:

  void main()
..................... {
0004:  CLRF   04
0005:  BCF    03.7
0006:  MOVLW  1F
0007:  ANDWF  03,F
0008:  BSF    03.5
0009:  BSF    1F.0
000A:  BSF    1F.1
000B:  BSF    1F.2
000C:  BCF    1F.3
000D:  MOVLW  07
000E:  MOVWF  1C
.....................
.....................
.....................
..................... }
000F:  SLEEP

So the answer is for CCS, it calls SLEEP, with nothing after it.... =20
Which seems kinda dangerous to me since there is a chance that it could=20
wake from SLEEP.     This has been verified with a PIC18 and a PIC16 target=
..

Personally I'd much rather see a BRA 0x000F after that SLEEP call....

-forrest
--=20
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