Tandy 1000 MS-DOS Reference Manual page 272

Chapter 12 / Link Technical Reference
Relocation Fixups
The linker performs relocation fixups (or resolves) on four types
of references in object modules: Short, Near self-relative, Near
segment-relative, and Long.
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Short References: Short references are all self-relative.
The implication is that the frame address of the target
and source frames are the same. The linker generates
the fixup error message:
F1XUP off5et exceed5 fleld wldth
under either of the following conditions:
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The target and source frame addresses are
different.
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The target is more than 128 bytes before or after
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the source frame address.
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The resulting value of the short reference must fit into
one signed byte.
Near Self-Relative References: When near self-relative
references are used, the frame address of the target
and source frames are the same. The linker generates
the fixup error message under either of the following
conditions:
The target and source frame addresses are
different.
The target is more than 32K before or after the
source frame address.
The resulting value of the near self-relative reference
must fit into one signed word (16 bits).
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