hi
sorry for taking so long to answer but we were off to lunch 
the function is a processor expert bean for general 1bit i/o
i did nothing than enabling the method creation of ClrVal und SetVal.
that leads to the auto generated code
#define DUT_WAKEN_ClrVal() ( \ (void)clrReg8Bits(PORTB, 8) /* BIT3=0 */ \ )#define DUT_WAKEN_SetVal() ( \ (void)setReg8Bits(PORTB, 8) /* BIT3=1 */ \ )
my function is a bit long because it proofs several cases...
ill try to short out repeated parts
void DUT_autotest(void){ uint8_t temp = 0; uint8_t temp2 = 0; errorcode1 = 0; // Reset error code (volatile) errorcode2 = 0; /***** Flag Test *****/ DUT_power_mode(GOTOSLEEP); FUNCTIONS_delay(10); errorcode2 |= ((~DUT_RXD_GetVal() & 1) << 6); errorcode2 |= ((~DUT_ERRN_GetVal() & 1) << 7); DUT_WAKEN_ClrVal(); DUT_WAKEN_SetVal(); FUNCTIONS_delay(10); errorcode2 |= (DUT_RXD_GetVal() << 6); errorcode2 |= (DUT_ERRN_GetVal() << 7); MUX_disconnect_all(); // Disconnect the whole DUT. It becomes unconnected and unpowered.}
i deleted repeated tests because they all look like this for different power modes.
errorcode is extern volatile.
so the only thing this should do is read the two pins, generate a wake signla by toggling WAKEN and check that pins again...
dont know if this helps but in my opinion there is nothing to shorten for the compiler, but i am not a specialist in compilers... 
hmmm, maybe if you tell me how to do that 
i found out that i can rightclick an disassemble, but where and how can i see that disassembled code?
ok i was right, but codewarrior tried to hide the generated file from me
i didnt want to post 1100 lines so i looked for the corresponding lines:
522: /***** Flag Test *****/ 523: DUT_connect_functional(); 012c 4a000000 [7] CALL DUT_connect_functional,PAGE(DUT_connect_functional) 524: DUT_power_mode(NORMAL); 0130 160000 [4] JSR DUT_autotest:0x0304 525: 526: // GoToSleep 527: DUT_power_mode(GOTOSLEEP); 0133 c602 [1] LDAB #2 0135 160000 [4] JSR DUT_autotest:0x0336 528: FUNCTIONS_delay(10); 0138 c60a [1] LDAB #10 013a 160000 [4] JSR DUT_autotest:0x0311 529: errorcode2 |= ((~DUT_RXD_GetVal() & 1) << 6); 013d 4a000000 [7] CALL DUT_RXD_GetVal,PAGE(DUT_RXD_GetVal) 0141 51 [1] COMB 0142 c401 [1] ANDB #1 0144 87 [1] CLRA 0145 cd0040 [2] LDY #64 0148 13 [3] EMUL 0149 160000 [4] JSR DUT_autotest:0x02af 530: errorcode2 |= ((~DUT_ERRN_GetVal() & 1) << 7); 014c 160000 [4] JSR DUT_autotest:0x0309 014f 87 [1] CLRA 0150 cd0080 [2] LDY #128 0153 13 [3] EMUL 0154 160000 [4] JSR DUT_autotest:0x02af 531: DUT_WAKEN_ClrVal(); 0157 160000 [4] JSR DUT_autotest:0x032f 532: DUT_WAKEN_SetVal(); 533: FUNCTIONS_delay(10); 015a 160000 [4] JSR DUT_autotest:0x02d2 534: errorcode2 |= (DUT_RXD_GetVal() << 6); 015d ce0040 [2] LDX #64 0160 b750 [1] TFR X,A 0162 12 [1] MUL 0163 160000 [4] JSR DUT_autotest:0x02af 535: errorcode2 |= (DUT_ERRN_GetVal() << 7); 0166 d600 [3] LDAB _PORTAB:1 0168 c401 [1] ANDB #1 016a cd0080 [2] LDY #128 016d b760 [1] TFR Y,A 016f 12 [1] MUL 0170 160000 [4] JSR DUT_autotest:0x02af 536: 537: // Standby/Sleep
in that file i looked for the adress of that
JSR DUT_autotest:0x02af
and there it says
02af fa0000 [3] ORAB errorcode2:1 ... 0309 d600 [3] LDAB _PORTAB:1
if i understand that file correctly
btw is there some kind of assembler code listing for the MC9S12DP ?
ok i figured out how i can make the compiler notice that i want to have that function
when i execute my self written delay function between them it works
DUT_WAKEN_ClrVal();FUNCTIONS_delay(10); DUT_WAKEN_SetVal();
and i can step the debugger through both functions.
i only need the delay function between the Clr and SetVal functions once.
all of the calls, even if they are called like before, will execute correct
DUT_WAKEN_ClrVal(); DUT_WAKEN_SetVal();
if i take away that delay function the compiler erases all of the ClrVal() function...
that or other ways (volatile) cant be the trick to make the compiler work as expected...
(or is it my misunderstanding of c programming)
