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Manipulating Standard Libraries (C51S.LIB)

Garrett Chandler

So I want to replace a standard function in the C51S library. Shouldn't be too hard, right?

I rewrote the function (?C?LMUL to be specific) in assembly and compiled it using the A51 assembler. (processes it without complaint) The code looks like this:

; Segment Definition
?C?LMUL	SEGMENT	CODE

; Module Start
RSEG	?C?LMUL
MOV	...
...
END

I fire up the LIB51 from the command line...
LIB51 DELETE C51S.LIB (?C?LMUL)
A check using LIB51 LIST confirms that I squashed the old ?C?LMUL. Now to put mine back in.
LIB51 ADD NEW_LMUL.OBJ (?C?LMUL) TO C51S.LIB
>> ERR 223 CANNOT FIND MODULE
So I tried to add the whole thing...
LIB51 ADD NEW_LMUL.OBJ TO C51S.LIB
LIB51 LIST C51S.LIB
This listing show that "NEW_LMUL" is in there, but ?C?IMUL is not...

Can anyone help me on this one? Thanks.

Parents
  • 0 in reply to Keil Software Support Intl.

    I can not say this is the cause, but on some library work I have seen the NAME pseudo-op being extremely important. Try inserting a NAME statement.
    Oh, i recall, if you copy a module to another name to make two slighbtly different libray functions and forget to change the NAME statement in the modified copy, all hell breaks lose with meaningless error messages and who knows what.

    Erik

Reply
  • 0 in reply to Keil Software Support Intl.

    I can not say this is the cause, but on some library work I have seen the NAME pseudo-op being extremely important. Try inserting a NAME statement.
    Oh, i recall, if you copy a module to another name to make two slighbtly different libray functions and forget to change the NAME statement in the modified copy, all hell breaks lose with meaningless error messages and who knows what.

    Erik

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