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Hi all
I have a normal 8051's code ,but i want insert NOP instruction in the specified address without modify the original code (it meaning I didn't need to check LST file to find the address and then insert a nop )
for example The code before insert NOP:
02FF F1EA 4147 CALL A_FUNC 0301 22 4148 RET
The code after insert NOP:
02FF 00 XXXX NOP 0300 F1EB 4147 CALL A_FUNC 0302 22 4148 RET
I try to put
ORG 2FFh NOP
in the top or bottom of the code ,
In the top ,It will be overwritten , there is nothing change, In the bottom , It will insert a NOP instruction, but destroyed the original instructions format
Does the compiler or linker can help to do this work ?? it also can say I want retain the specified location for NOP, so compiler will skip it but still compiled correctly
Thanks a lot for you read this post , and please forgive my poor English
Just as well I saved you a wasted trip across the road, then!
Huh? I've just been across the road to the supermarket and got my milk. Fresh and cold and not that horrible soya stuff. Just what I wanted. Will go nicely with my tea and biscuits.
Anyway, what are you still doing here by the side of the road? Loitering? Out of work? Bored? There's a nice wall around here you could go and paint some fresh graffiti on. Now where did I see it? Oh yes, by the supermarket. You know where it is? Just across the road.
So why did you ask??
Because I didn't previously know how to cross this road.
You can stay standing by the side of the road if you want.
I'm going to my new home on this side of the road after asking you how to get across the road with which I was not previously familiar, to the neighbourhood where I used to live, to go to the supermarket to get real cow milk, which I knew they stocked because I'd been there before, for my tea. Whew!