Hi,
I have a working old code in rom 32k, I added ram code at the upper 32k and I set the hw to start form the new ram at 32k.
I want to address old function from the new ram code without modify the old project.
once I compile the project code the hex output is not the old rom hex with the new ram code.
rather it recompiled the old code to optize it and I have a new hex that is not like the old rom hex with the new additions.
The thinng is that I need to address the old code function (fixed hex in rom).
what can I do?
regards, dan
once you know how to call the function in asm its solved.
No, it won't be. And if you really had that "deep knowledge" of C51 you so deftly claimed, you wouldn't need us to tell yo uthat.
There must be an essayer way to solve it.
There is: It's a bad plan, so don't do it!.
Once you stop banging your head against the wall, it will cease to hurt that much. You might even step far enough back to notice that there's a perfectly working, open door just 5 steps to the right of where you've been trying to pass through a rock-solid wall.
thanks for the brain storming, I will take your advise under consideration.
all the best, dan
if "the old code" as it does not "as is" call anything outside the ROM it is impossible to do what you want without modifying "the old code"
so SPECIFIC questions requiring SPECIFIC answers
a) does "the old code" call anything outside the ROM if no, then b) can you modify "the old code"
Erik