PIC16F917 stack issues

[mister_e]

Somehow, an interesting finding here for those using the MCS ICD.

When you hit 'ICD Compile and program' button (or CTRL+F10), it create a variable named DEBUG_STACK which hold the value/actual level of the stack.

NOW, to make things simple, just add those lines

@STACK_LEVEL = DEBUG_STACK
STACK_LEVEL  VAR BYTE EXT

And look what happen to your STACK_LEVEL variable in the ICD window while jumping here and there with gosubs.

i used that one...

DEFINE LOADER_USED 1
DEFINE OSC 20

@STACK_LEVEL = DEBUG_STACK
STACK_LEVEL  VAR BYTE EXT

START:
    PAUSE 1000
    GOSUB LEVEL1
    GOTO START
    
LEVEL1:
    PAUSE 1000
    gosub LEVEL2
    RETURN
    
LEVEL2:
    PAUSE 1000
    GOSUB LEVEL3
    RETURN

LEVEL3:
    PAUSE 1000
    gosub level4
    RETURN

LEVEL4:
    PAUSE 1000
    RETURN

WOOOOHOOOO! Don't break my bubble to me it's a nice finding... maybe usefull one day or another. Down side... it won't work unless you use the ICD... Darrel's stuff have a BIG advantage as you just need to read the StackPTR byte variable.