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Added info about the new OPTIONAL segment attribute.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@2166 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2003-05-22 22:35:20 +00:00
parent cfb622f738
commit 8b279cf126
1 changed files with 12 additions and 6 deletions
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18
doc/ld65.sgml
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@ -373,10 +373,10 @@ segment, where this attribute is true, the linker will export three symbols.
<tscreen><verb>
__NAME_LOAD__ This is set to the address where the
segment is loaded.
segment is loaded.
__NAME_RUN__ This is set to the run address of the
segment. We will cover run addresses
later.
segment. We will cover run addresses
later.
__NAME_SIZE__ This is set to the segment size.
</verb></tscreen>
@ -486,10 +486,10 @@ external symbols for the data segment that may be accessed from your code:
<tscreen><verb>
__DATA_LOAD__ This is set to the address where the segment
is loaded, in this case, it is an address in
ROM2.
is loaded, in this case, it is an address in
ROM2.
__DATA_RUN__ This is set to the run address of the segment,
in this case, it is an address in RAM2.
in this case, it is an address in RAM2.
__DATA_SIZE__ This is set to the segment size.
</verb></tscreen>
@ -594,6 +594,12 @@ or (for the segment definitions from above)
}
</verb></tscreen>
To suppress the warning, the linker issues if it encounters a segment that is
not found in any of the input files, use "<tt/optional=yes/" as additional
segment attribute. Be careful when using this attribute, because a missing
segment may be a sign of a problem, and if you're suppressing the warning,
there is no one left to tell you about it.
File names may be empty, data from segments assigned to a memory area with
an empty file name is discarded. This is useful, if the a memory area has
segments assigned that are empty (for example because they are of type